CLEMENTINE EDR IMAGE SIS
Prepared by:
Eric Eliason
Planetary Data System - Imaging Node
Branch of Astrogeology
United States Geological Survey
Erick Malaret
Applied Coherent Technology
Nat Bachman
Navigational Ancillary Information Facility
Jet Propulsion Laboratory
October 1, 1994
Table of Contents
1. INTRODUCTION
1.1 PURPOSE
1.2 SCOPE
1.3 APPLICABLE DOCUMENTS
1.4 FUNCTIONAL DESCRIPTION
1.4.1 DATA CONTENT SUMMARY
1.4.2 DATA SOURCE AND TRANSFER METHOD
1.4.3 DATA RECIPIENTS AND UTILIZATION
1.5 ASSUMPTIONS AND CONSTRAINTS
2. ENVIRONMENT
3. ACCESS
4. DETAILED INTERFACE SPECIFICATIONS
4.1 DATA PRODUCT IDENTIFICATION
4.2 STRUCTURE AND ORGANIZATION OVERVIEW
4.3 PDS LABEL STRUCTURE DEFINITION AND FORMAT
4.3.1 GEOMETRIC AND VIEWING PARAMETER ASSUMPTIONS
4.3.2 PDS KEYWORD DEFINITIONS
APPENDIX I - SPICE Kernel Files Used In Clementine Data Products
APPENDIX II - Data Compression Coefficients
1. INTRODUCTION
1.1 PURPOSE
This Software Interface Specification (SIS) describes the organization
and contents of the Clementine EDR (Experimental Data Record) Image data
products. There are six cameras onboard the Clementine spacecraft that
will produce image data: 1) A-Star-tracker camera (A-STAR), 2) B-Star-
tracker camera (B-STAR), 3) LIDAR High-resolution camera (HiRes), 4)
ultraviolet / Visible camera (UVVIS), 5) Near Infrared camera (NIR), and
6) the Long Wavelength Infrared Camera (LWIR). The Clementine EDR Data
products are deliverable products to the Planetary Data System and the
scientific community that it supports. All data formats are based on the
PDS standard, version 3.0, as documented in the PDS Standards Reference
[JPL Document D-7669, November 1992, available through the PDS].
1.2 SCOPE
This specification is useful to those who wish to understand the format
and content of the Clementine EDR Image data products. Typically, these
individuals include software engineers, data analysts, and planetary
scientists. The SIS applies to the EDR data products produced during the
course of Clementine Mission operations.
1.3 APPLICABLE DOCUMENTS
The Clementine EDR SIS is responsive to the following Documents:
<> NASA Research Announcement, Science Team for the Clementine Mission
Deep Space Program Science Experiment (DSPSE), January 1993,
NRA-93-OSSA-2.
<> DSPSE Experiment Manifest, Naval Center for Space Technology, May
1993 SSD-D-DS-018
<> Planetary Data System Standards Reference, 1992, JPL D-7669.
Distributed by the Planetary Data System, Jet Propulsion Laboratory
<> Planetary Science Data Dictionary Document, 1992, JPL D-7116.
Distributed by the Planetary Data System, Jet Propulsion Laboratory
1.4 FUNCTIONAL DESCRIPTION
1.4.1 DATA CONTENT SUMMARY
Each Clementine EDR data product consists of a single camera
observation. The image data have been depacketized and reformatted with
standard PDS labels, but are otherwise "raw". Raw data contain the
geometric and radiometric characteristics of unprocessed and unrectified
data. To make full utilization of the data, it is necessary to perform
radiometric and geometric processing on the data products.
The imaging sensors are framing cameras using CCD technology. The Star
tracking cameras (A-STAR and B-STAR) are used for spacecraft navigation
and orientation. The science observation cameras (UVVIS, HIRES, NIR, and
LWIR) acquire images in a wide spectral range from 415 to 8750
nanometers. The UVVIS, HIRES, and NIR cameras have filter wheels that
allow images to be acquired under six spectral filters. The LWIR camera
has a single spectral filter. Table 1 shows the pixel dimensions of the
images acquired by each camera and the center wavelength of each filter
wheel position. Other than the image dimensions, the data products of
each camera are identically formatted.
TABLE-1 Characteristics of each camera showing the dimension
of an image in lines (rows) and samples (columns), the
number of filter wheel positions, and the center wavelength of
each filter.
Camera Lines/Samps/filt/Wavelength(Nanometers)
UVVIS 288 384 6 415,750,900,950,1000,650(broadband)
NIR 256 256 6 1100,1250,1500,2000,2600,2780
LWIR 128 128 1 8750
HIRES 288 384 6 415,560,650,750,650(broadband), opaque
A-STAR 576 384 N/A (broad band, no filter wheel)
B-STAR 576 384 N/A (broad band, no filter wheel)
______________________________________________________________
1.4.2 DATA SOURCE AND TRANSFER METHOD
Clementine imaging data products are produced by the Clementine Mission
Operations Center operated by the Naval Research Laboratory (NRL). The
"NRL-ACT-MGRAB" software converts the data to the proper PDS labeled
format.
1.4.3 DATA RECIPIENTS AND UTILIZATION
The Clementine EDR data products are made available to NRL scientists
and the NASA/Clementine Science team for initial evaluation and
validation. At the end of the evaluation and validation period, the data
are organized and stored on compact disc (CD) media and made available
to the PDS for distribution to the science community. These products
will be used for engineering support, direct science analysis, and
construction of other science products.
1.5 ASSUMPTIONS AND CONSTRAINTS
The Clementine EDR data products contain compressed image data.
Decompression will result in a raw image that is not corrected for
instrument signature, effects of spacecraft motion, or effects of
imaging geometry. Although there is enough information in the header to
perform some processing, for more sophisticated processing, ancillary
data will be required. Examples of ancillary files are calibration
files, viewing geometry files, (e.g. SPICE kernels), image index tables,
etc.
2. ENVIRONMENT
The Clementine EDR data products are stored on CD media according to the
ISO 9660 Volume and Directory Standard. This standard is compatible on
virtually all modern hardware platforms including UNIX, IBM/PC, and
Macintosh computer environments.
The file headers contained on the Clementine CD-ROMs do not include
extended attribute records (XAR). This means that VAX/VMS systems can
not readily access the files. Without XARs, record attributes can not be
associated with a file. VAX/VMS directory listings of these files will
show "Record Attributes: None, Record Format: None" file
characteristics.
3. ACCESS
The primary barrier or access to the Clementine EDR data products is the
compressed format of the image data. Thus, decompression software is
available on the archive to perform decompression. This software
produces decompressed image files in a standard PDS format. The software
will run on a variety of computer platforms.
4. DETAILED INTERFACE SPECIFICATIONS
4.1 DATA PRODUCT IDENTIFICATION
Each product will have a file name of the form "msfxxxxy.rrr". The file
name is unique across all Clementine EDR data products. For more
information on the file name refer to the PRODUCT_ID keyword definition
in section 4.3.2. The product also contains a data set id that
identifies the data set. For more information on the data set id see the
DATASET_ID keyword definition in section 4.3.2.
4.2 STRUCTURE AND ORGANIZATION OVERVIEW
The Clementine EDR data products are constructed according to the data
object concepts developed by the PDS. By adopting the PDS format, the
Clementine EDR images are consistent in content and organization with
other planetary image collections. In the PDS standard, the EDR image
file is grouped into objects with PDS labels describing the objects. The
Clementine EDR data products contain 1) an image object (the primary
data), 2) a browse image object, and 3) an image histogram object. The
image object contains the observed image data. The image data will exist
in a compressed form (if the data are compressed on board the
spacecraft), or an uncompressed form (if the data are not compressed on
the spacecraft). The browse image object contains an uncompressed image
of the original data that has been reduced in size by subsampling the
image array. The browse image provides the capability to rapidly view
the image collection at a reduced format. The image histogram object
contains the histogram of the image after decompression. The image
histogram object can be used to obtain statistical information about the
image.
A description of the data compression coefficients used on the
Clementine images is described in Appendix II.
4.3 PDS LABEL STRUCTURE DEFINITION AND FORMAT
The label area of the data file conforms to the PDS version 3 standards.
For more information on this standard consult the PDS Standards
Reference JPL D-7669 Document. The purpose of the PDS label is to
describe the data product and provide ancillary information about the
data product. An example of a PDS label is shown below:
EXAMPLE PDS LABEL FOR THE CLEMENTINE EDR DATA PRODUCTS
PDS_VERSION_ID = PDS3
/*** FILE FORMAT ***/
RECORD_TYPE = UNDEFINED
/*** POINTERS TO START BYTE OFFSET OF OBJECTS IN FILE ***/
^IMAGE_HISTOGRAM = 4788
^BROWSE_IMAGE = 5812
^IMAGE = 7540
/*** GENERAL DATA DESCRIPTION PARAMETERS ***/
MISSION_NAME = "DEEP SPACE PROGRAM SCIENCE EXPERIMENT"
SPACECRAFT_NAME = "CLEMENTINE 1"
DATA_SET_ID = "CLEM1-L/E/Y-A/B/U/H/L/N-2-EDR-V1.0"
PRODUCT_ID = "LUC0538B.032"
ORIGINAL_PRODUCT_ID = "LUC00538.032"
PRODUCER_INSTITUTION_NAME = "NAVAL RESEARCH LABORATORY"
PRODUCT_TYPE = EDR
EDR_SOFTWARE_NAME = "NRL-ACT-MGRAB V1.2"
MISSION_PHASE_NAME = "LUNAR MAPPING"
DATA_QUALITY_ID = "N/A"
TARGET_NAME = "MOON"
REVOLUTION_NUMBER = 032
FRAME_SEQUENCE_NUMBER = 0538
/*** TIME PARAMETERS ***/
START_TIME = 1994-02-26T21:14:57.857Z
STOP_TIME = "N/A"
UNCORRECTED_START_TIME = 1994-02-26T21:14:57.859Z
SPACECRAFT_CLOCK_START_COUNT = "N/A"
SPACECRAFT_CLOCK_STOP_COUNT = "N/A"
PRODUCT_CREATION_TIME = 1994-09-30T19:53:05
/*** CAMERA RELATED PARAMETERS ***/
INSTRUMENT_NAME = "ULTRAVIOLET/VISIBLE CAMERA"
INSTRUMENT_ID = "UVVIS"
FILTER_NAME = "C"
CENTER_FILTER_WAVELENGTH = 900
BANDWIDTH = 20
GAIN_MODE_ID = "2"
MCP_GAIN_MODE_ID = "N/A"
OFFSET_MODE_ID = "3"
EXPOSURE_DURATION = 7.9296
LENS_TEMPERATURE = 267.63
FOCAL_PLANE_TEMPERATURE = 271.802
CRYOCOOLER_TEMPERATURE = "N/A"
CRYOCOOLER_DURATION = "N/A"
/*** J2000 (ALSO CALLED EME2000) IS THE INERTIAL REFERENCE SYSTEM ***/
/*** USED TO SPECIFY OBSERVATIONAL GEOMETRY. LATITUDE AND LONGITUDE ***/
/*** COORDINATES OF TARGET ARE PLANETOCENTRIC. GEOMETRIC PARAMETERS ***/
/*** ARE BASED ON BEST AVAILABLE DATA AT TIME OF PRODUCT CREATION. ***/
/*** REFER TO CLEMENTINE SPICE DATA BASE FOR THE MOST CURRENT ***/
/*** OBSERVATIONAL GEOMETRY DATA. ***/
/*** LINE-OF-SITE ON CELESTIAL SPHERE: Angles in ***/
RIGHT_ASCENSION = 238.60
DECLINATION = 61.62
TWIST_ANGLE = 300.70
RETICLE_POINT_RA = ( 231.53, 237.89, 245.09, 239.49)
RETICLE_POINT_DECLINATION = ( 62.77, 58.14, 60.12, 65.09)
/*** OBSERVATIONAL SEQUENCE INFORMATION ***/
SEQUENCE_TABLE_ID = "CEQ_03"
/*** TARGET PARAMETERS: Position , Velocity ***/
SC_TARGET_POSITION_VECTOR = ( -575.6, -954.2, 2049.3)
SC_TARGET_VELOCITY_VECTOR = ( -1.4890, 0.2342, -0.7037)
TARGET_CENTER_DISTANCE = 2332.7
/*** TARGET WITHIN SENSOR FOV: Angles in ***/
SLANT_DISTANCE = 595.3
CENTER_LATITUDE = -74.39
CENTER_LONGITUDE = 11.00
HORIZONTAL_PIXEL_SCALE = 0.152
VERTICAL_PIXEL_SCALE = 0.152
SMEAR_MAGNITUDE = 0.07
SMEAR_AZIMUTH = 89.80
NORTH_AZIMUTH = 270.51
RETICLE_POINT_LATITUDE = ( -75.08, -75.09, -73.66, -73.64)
RETICLE_POINT_LONGITUDE = ( 14.76, 7.29, 7.57, 14.39)
/*** SPACECRAFT POSITION WITH RESPECT TO CENTRAL BODY ***/
SUB_SPACECRAFT_LATITUDE = -74.38
SUB_SPACECRAFT_LONGITUDE = 10.74
SPACECRAFT_ALTITUDE = 595.3
SUB_SPACECRAFT_AZIMUTH = 347.12
/*** SPACECRAFT LOCATION: Position , Velocity ***/
SPACECRAFT_SOLAR_DISTANCE = 148497945.3
SC_SUN_POSITION_VECTOR = (-137837390.0, 50702496.3, 21948816.2)
SC_SUN_VELOCITY_VECTOR = (-10.2690,-26.6845,-10.7240)
/*** VIEWING AND LIGHTING GEOMETRY (SUN ON TARGET) ***/
SOLAR_DISTANCE = 148498461.7
SUB_SOLAR_AZIMUTH = 295.12
SUB_SOLAR_LATITUDE = 1.53
SUB_SOLAR_LONGITUDE = 346.24
INCIDENCE_ANGLE = 77.38
PHASE_ANGLE = 77.21
EMISSION_ANGLE = 0.28
LOCAL_HOUR_ANGLE = 208.08
/*** LIGHTING GEOMETRY FROM SECONDARY SOURCE ***/
LIGHT_SOURCE_NAME = "EARTH"
LIGHT_SOURCE_DISTANCE = 362703.5
SUB_LIGHT_SOURCE_AZIMUTH = 283.08
SUB_LIGHT_SOURCE_LATITUDE = 6.08
SUB_LIGHT_SOURCE_LONGITUDE = 357.76
LIGHT_SOURCE_INCIDENCE_ANGLE = 81.16
LIGHT_SOURCE_PHASE_ANGLE = 81.04
/*** DESCRIPTION OF OBJECTS CONTAINED IN THE FILE ***/
OBJECT = IMAGE_HISTOGRAM
ITEMS = 256
DATA_TYPE = LSB_INTEGER
ITEM_BYTES = 4
END_OBJECT
OBJECT = BROWSE_IMAGE
LINES = 36
LINE_SAMPLES = 48
SAMPLING_FACTOR = 8
SAMPLE_TYPE = UNSIGNED_INTEGER
SAMPLE_BITS = 8
END_OBJECT
OBJECT = IMAGE
ENCODING_TYPE = "CLEM-JPEG-1"
ENCODING_COMPRESSION_RATIO = 3.05
LINES = 288
LINE_SAMPLES = 384
SAMPLE_TYPE = UNSIGNED_INTEGER
SAMPLE_BITS = 8
MAXIMUM = 255
MINIMUM = 27
MEAN = 119.269
STANDARD_DEVIATION = 48.200
CHECKSUM = 4816272
END_OBJECT
END
4.3.1 GEOMETRIC AND VIEWING PARAMETER ASSUMPTIONS
Table 2 lists the computational assumptions for the geometric and
viewing data provided in the PDS label. There are two coordinate systems
in use: 1) the celestial reference system used for target and spacecraft
position and velocity vectors, and camera pointing; and 2) the planetary
coordinate system for geometry vectors and target location. The
celestial coordinate system is J2000 (Mean of Earth equator and equinox
of J2000). The planetary coordinate system is planetocentric.
TABLE 2. - COMPUTATIONAL ASSUMPTIONS
<> The mid-point time of observation is used for the geometric
element computations.
<> Label parameters reflect observed, not true, geometry.
Therefore, light-time and stellar aberration corrections are
used as appropriate.
<> The inertial reference frame is J2000 (also called EME2000).
<> Latitudes and longitudes are planetocentric.
<> The "sub-point" of a body on a target is defined by the surface
intercept of the body-to-target-center vector. This is not
the closest point on the body to the observer. This definition
gives sub-point latitude and longitude that are independent of
the reference ellipsoid.
<> Distances are in km, speeds in km/sec, angles, in degrees,
angular rates in degrees/sec, unless otherwise noted.
<> Angle ranges are 0 to 360 degrees for azimuths and local hour
angle. Longitudes range from 0 to 360 degrees
(positive to the East). Latitudes range from -90 to 90
degrees.
<> Spice kernel files used in the geometric parameters is
outlined in Appendix I.
4.3.2 PDS KEYWORD DEFINITIONS
The keywords are listed in the order in which they appear in the example
label shown above.
PDS_VERSION_ID = PDS3
The PDS_VERSION_ID data element represents the version
number of the PDS standards documents that is valid
when a data product label is created. PDS3 is used for
the Clementine Data products.
RECORD_TYPE = UNDEFINED
The record_type element indicates the record format of a
file. The value UNDEFINED is used in the Clementine EDR
data products. There are no record attributes associated
with the file. The file can be thought of as a continuous
stream of bytes with no record separators.
^IMAGE_HISTOGRAM = xxxxx
The image_histogram is a pointer to the image histogram object.
The value contains the starting byte position in the file.
(Pointers in the PDS standard assume the first byte in the array
is byte position 1.)
^BROWSE_IMAGE = xxxxx
The parameter is the pointer to the browse image object. The
value contains the starting byte position in the file. The browse
image is an uncompressed sub-sampled image of the image contained
in the IMAGE object.
^IMAGE = xxxx
The parameter is the pointer to the image object. The value
contains the starting byte position in the file.
MISSION_NAME = "DEEP SPACE PROGRAM SCIENCE EXPERIMENT"
The mission_name element identifies a major planetary mission or
project. A given planetary mission may be associated with one or
more spacecraft.
SPACECRAFT_NAME = "CLEMENTINE 1"
The spacecraft_name element provides the full, unabbreviated
name of the spacecraft.
DATA_SET_ID = "CLEM1-/L/E/Y-A/B/U/H/L/N-2-EDR-V1.0"
The data_set_identification element uniquely identifies the
data sets available on the volume. The EDR collection is made
up of a single data set.
Targets include: L=Earth's Moon, E=Earth, Y=Sky,
Cameras include: A=A star tracker, B=B star tracker,
U=UV/Vis, H=HiRes, L=longwave infrared,
N=Nir infrared cameras.
PRODUCT_ID = "msfxxxxy.rrr"
The product_id data element represents a permanent, unique
identifier assigned to a data product by its producer.
The product_id is identical to the name of the EDR image file.
Where: m = Mission Phase
P = Prelaunch
L = Lunar mapping
E = Earth mapping (LEO and phasing loops)
A = First earth-moon orbital phasing loops
B = Second earth-moon orbital phasing loops.
s = Sensor
A = Star tracker A
B = Star tracker B
U = UV/Vis
H = Hi-Resolution sensor
N = Near infrared sensor
L = Long wavelength infrared sensor
f = Filter wheel position (A, B, C, D, E, F)
xxxx = Frame number within revolution
y = Latitude bin for lunar mapping observations. This
character signifies a latitude range on the lunar
surface where the observation was made. The
center latitude of the image defines the character:
A = -90 to -80 M = 30 to 40
B = -80 to -70 N = 40 to 50
C = -70 to -60 O = 50 to 60
D = -60 to -50 P = 60 to 70
E = -50 to -40 Q = 70 to 80
F = -40 to -30 R = 80 to 90
G = -30 to -20
H = -20 to -10 S = "unkown" targets
I = -10 to 0
J = 0 to 10 T = Earth observations prior to
K = 10 to 20 systematic mapping
L = 20 to 30 U = Sky observations prior to
systematic mapping
V = Lunar observations prior to
systematic mapping
W = Sky observations after
systematic mapping
Y = Earth observations after
systematic mapping
Z = Moon Observations after
systematic mapping
rrr = Revolution number (lunar mapping phase)
For non-lunar mapping phase of the mission, the string
"xxxxy.rrr" takes on a different meaning:
rrr = Data down load (dump) number within the mission
phase. The image data is periodically downloaded
from the spacecraft's solid state data recorder. This
field specifies a sequence number, starting with 1, of
a download sequence.
xxxx = Image sequence number of within the download.
y = This field contains an alpha character A-Z. The
letter increases to the next alpha character after
each 100 images. This letter helps limit the number
of images that go into each subdirectory on the
CD-ROM.
ORIGINAL_PRODUCT_ID = "msfxxxxx.rrr"
During active flight operations, the images were assigned
temporary file names and product id's. This keyword contains the
temporary product_id (and file name) given to the image. This field
should be ignored by all new users of the Clementine data products.
The format is similar to the PRODUCT_ID. The 'xxxxx' field
represents a sequence number. There were several problems
associated with this number. The sequence numbers refer to the
order in which the data were send down from the spacecraft and
not the order in which the images were acquired in orbit. Due to
ground processing problems, the sequence numbers in the original
product id have been shown to be unreliable.
PRODUCER_INSTITUTION_NAME = "NAVAL RESEARCH LABORATORY"
Organization responsible for developing the data products. The
Naval Research Laboratory was responsible for the ground processing
system for the Clementine Spacecraft.
PRODUCT_TYPE = EDR
Image data products are identified as an EDR (Experimental Data
Record). The images are unprocessed and contain all of the
characteristics and artifacts of "raw" images as acquired by the
spacecraft.
EDR_SOFTWARE_NAME = "NRL-ACT-MGRAB V1.2"
Version number of the software system that created the data
products.
MISSION_PHASE_NAME = "xxxxxxxx"
Mission Phase names:
LOW EARTH ORBIT
LUNAR MAPPING
EARTH PHASING LOOP A
EARTH PHASING LOOP B
DATA_QUALITY_ID = "N/A"
Data Quality indicator. This keyword is reserved for future use.
As processing of Clementine data proceeds, this keyword may
be used to describe data quality information. No data quality
parameters have currently been defined.
TARGET_NAME = "xxxxxx"
Observational target: MOON, EARTH, SKY
The TARGET body is determined by the PICGEO program algorithm:
1) For each possible target body (a target selection list is
specified to the PICGEO program), it determines if the body is
partly or entirely in the camera's field of view.
2) If only one body is in the field of view, that body is the
target body.
3) If multiple bodies are in the field of view, and one or more
bodies intersect the camera boresight, the closest one to the S/C
is the target body.
4) If multiple bodies are in the field of view, and no bodies
intersect the camera boresight, the closest one to the S/C is the
target body.
5) If no bodies are in the camera's field of view, the target
body is 'SKY'.
REVOLUTION_NUMBER = xxx
The revolution number refers to an observational pass over the
moon. The revolution number is incremented by one each time the
spacecraft passes over the south pole prior to the beginning of
data acquisition. REVOLUTION_NUMBER is used in lieu of orbit
number because of the way the orbit number was defined by the
mission. The orbit number is incremented at the equator on the
sun lit side of the Moon. Thus, the orbit number is changed in
the middle of an observational pass. This proved to be awkward
in defining the data acquired by a single pass over the Moon.
FRAME_SEQUENCE_NUMBER = xxxxxx
Sequential frame number of the image acquired during a pass over
the Moon. For non-lunar mapping phase of mission the sequence
number refers to the image sequence within a spacecraft memory
download.
START_TIME = 1994-01-01T03:24:10.444Z
Time of start of observation. This time refers to the start
of the integration time of the camera. The value contained in this
keyword reflects a "corrected time". A software problem onboard
the spacecraft caused inaccurate times to be attached to an image.
This value contains the best estimated time of the observation.
STOP_TIME = "N/A"
This keyword is a required element for PDS data products and is
included in the label for conformance to PDS standards.
UNCORRECTED_START_TIME = 1994-01-01T03:24:10.444Z
This keyword contains the time of the observation as sent down
by the spacecraft. This time may be incorrect due to a software
problem that existed onboard the spacecraft. The difference between
the START_TIME and the UNCORRECTED_START_TIME is the estimated
correction that was applied to the START_TIME.
SPACECRAFT_CLOCK_START_COUNT = "N/A"
Clock count of the spacecraft computer at the start of the image
observation. The computer clock count was not available for
the data products. This keyword is a required element for PDS
data products and is included for conformance to the standard.
SPACECRAFT_CLOCK_STOP_COUNT = "N/A"
Clock count of the spacecraft computer at the end of the image
observation. The computer clock count was not available for
the data products. This keyword is a required element for PDS
data products and is included for conformance to the standard.
PRODUCT_CREATION_TIME = 1994-02-26T21:17:06
Date and time for which the EDR product was created.
INSTRUMENT_NAME = "xxxxxxxx"
Name of camera:
NEAR INFRARED CAMERA
LIDAR HIGH-RESOLUTION IMAGER
ULTRAVIOLET/VISIBLE CAMERA
LONG WAVELENGTH INFRARED CAMERA
A STAR TRACKER CAMERA
B STAR TRACKER CAMERA
INSTRUMENT_ID = "xxxxxx"
A-STAR (A star tracker camera)
B-STAR (B star tracker camera)
HIRES (HiResolution camera)
UVVIS (Ultra Violet/Visible camera)
LWIR (Long wavelength infrared camera)
NIR (Near Infrared camera)
FILTER_NAME = "xx"
Filter name. The filter names are assigned alpha letters
to designate the filter position. The CENTER_FILTER_WAVELENGTH
parameter defines the central wavelength of the filter. Values
for each camera are shown, center wavelength and bandwidth are
given in nanometers.
Camera/Filter/Center/Bandwidth
UVVIS A - 415 40
B - 750 10
C - 900 20
D - 950 30
E - 1000 30
F - 650 550 (BROADBAND FILTER)
NIR A - 1100 60
B - 1250 60
C - 1500 60
D - 2000 60
E - 2600 60
F - 2780 60
HIRES A - 415 40
B - 560 50
C - 650 50
D - 750 50
E - 650 350 (BROADBAND FILTER)
F - N/A N/A (OPAQUE FILTER)
LWIR A - 8750 1500
A-STAR A - N/A N/A (BROADBAND, NO FILTER WHEEL)
B-STAR A - N/A N/A (BROADBAND, NO FILTER WHEEL)
CENTER_FILTER_WAVELENGTH = xxxx
The center_filter_wavelength element provides the mid point
wavelength value between the minimum and maximum instrument
filter wavelength values.
BANDWIDTH = xxxx
The bandwidth element provides a measure of the spectral
width of a filter (nanometers). For a root-mean-square detector
this is the effective bandwidth of the filter i.e., the full
width of an ideal square filter having a flat response over the
bandwidth and zero response elsewhere.
GAIN_MODE_ID = "xxx"
Gain mode of the Camera. Mode that defines the sensitivity of
the detector.
MCP_GAIN_MODE_ID = "xxx"
Micro Channel Plate (MCP) gain mode. This keyword is applicable
only to the HIRES camera.
OFFSET_MODE_ID = "xxx"
Mode specifies the analog value that is subtracted from the
video signal prior to the Analog/digital converters.
EXPOSURE_DURATION = xxxx
Exposure duration (integration time) of the image observation
expressed in milliseconds.
LENS_TEMPERATURE = xxx.xx
Temperature of the camera lens in degrees Kelvin at the
time the observation was made. This parameter is "N/A"
for the HIRES camera because not temperature sensor was
available at the lens.
FOCAL_PLANE_TEMPERATURE = xxx.xx
Temperature of the focal plane array in degrees Kelvin
at the time the observation was made.
CRYOCOOLER_TEMPERATURE = xxx.xx
Temperature of the Cryocooler at time observation was made.
This field applicable only to the NIR and LWIR cameras.
CRYOCOOLER_DURATION = xxxx
Time that has transpired since the cryocooler was turned on.
This field applicable only to the NIR and LWIR cameras.
RIGHT_ASCENSION = xxxx.xxx
The right ascension of the camera boresight. The values are
specified relative to the J2000 inertial reference frame.
DECLINATION = xxxx.xxx
The declination of the camera boresight. The values are
specified relative to the J2000 inertial reference frame.
TWIST_ANGLE = xxxx.xxx
The element TWIST_ANGLE provides the angle of rotation about
optical axis relative to celestial coordinates. The
right ascension, declination, and twist angles define the
pointing direction of the scan platform.
RETICLE_POINT_RA = (xxxx.xx, xxxx.xx, xxxx.xx, xxxx.xx)
RETICLE_POINT_DECLINATION = (xxxx.xx, xxxx.xx, xxxx.xx, xxxx.xx)
These parameters refer to the right ascension and declination
of the principle points of the camera. For the Clementine
cameras the principle points are defined as the upper
left pixel of the camera (line 1, sample 1), the upper right
pixel (line 1 , last sample), lower left (last line, sample 1),
and lower right(last line, last sample). The reticule point
RA and DEC are expressed in degrees.
SEQUENCE_TABLE_ID = "xxx"
This parameter contains the image acquisition sequence code that
specifies the camera/filter image sequencing for a set of
observations. The ID indicates the order in which cameras are
shuttered and the order for which filters are used in the
set of observations. The sequence tables will be defined in the
ancillary CD-ROM data products that accompany the Clementine EDR
archive.
SC_TARGET_POSITION_VECTOR = (xxxxxxxx.xx, yyyyyyyyyy.yy, zzzzzzzz.zz)
x-, y-, and z- components of the position vector from observer to
target center expressed in J2000 coordinates, and corrected for
light time and stellar aberration, evaluated at epoch at which
image was taken. Units are expressed in kilometers.
SC_TARGET_VELOCITY_VECTOR = (xxxxxxx.xx, yyyyyyyy.yy, zzzzzxxxz.zz)
x-, y-, and z- components of velocity vector of target relative to
observer, expressed in J2000 coordinates, and corrected for light
time, evaluated at epoch at which image was taken. Units
are expressed in kilometers/second.
TARGET_CENTER_DISTANCE = xxxx.xxx
The target_center_distance element provides the distance
between the spacecraft and the center of the named target,
expressed in kilometers.
SLANT_DISTANCE = xxxx.xxx
Distance from spacecraft to camera boresight intercept point on
surface expressed in kilometers.
CENTER_LATITUDE = xxxx.xxx
CENTER_LONGITUDE = xxxx.xxx
Planetocentric latitude and longitude of camera boresight intercept
point.
HORIZONTAL_PIXEL_SCALE = xxxxx.xxxx
VERTICAL_PIXEL_SCALE = xxxxx.xxxx
Distance, measured along horizontal and vertical directions, along
target surface between intercept points defined by centers of left
and right edges of pixel-sized region in FOV centered at camera
boresight. Defined only when boresight intercepts surface. Units
are in kilometers.
SMEAR_MAGNITUDE = xxxx.xx
Norm of velocity vector of camera boresight intercept point
projected on target, multiplied by the exposure duration
with the scale of the image factored to obtain the smear
in pixels. Spacecraft rotation is taken into account. (Units
are in pixels.)
SMEAR_AZIMUTH = xxxxx.xx
Azimuth of smear velocity vector. The reference line for the angle
extends from the center of the image to the right edge of the
image. The angle increases in the clock-wise direction. The angle
is measured to the "image" of the smear velocity vector in the
camera's focal plane. This image is computed by orthogonally
projecting the smear vector onto the image plane and then applying
whatever transformations are required to orient the result properly
with respect to the image. The specific transformations to be
performed are given by the camera's I-kernel.
NORTH_AZIMUTH = xxxxx.xxx
Analogs to smear azimuth, but applies to the target north pole
direction vector.
RETICLE_POINT_LATITUDE = (xxxx.xx, xxxx.xx, xxxx.xx, xxxx.xx)
RETICLE_POINT_LONGITUDE = (xxxx.xx, xxxx.xx, xxxx.xx, xxxx.xx)
Latitudes and longitudes of the surface intercept points of the
principle points of the camera. (see RETICLE_POINT_RA for
definition of the reticule points for Clementine. The units
are expressed in degrees.
SUB_SPACECRAFT_LATITUDE = xxxx.xxx
SUB_SPACECRAFT_LONGITUDE= xxxx.xxx
Planetocentric latitude and longitude of spacecraft-to-centerbody-
center surface intercept vector. These parameters and the
SPACECRAFT_ALTITUDE, SUB_SPACECRAFT_AZIMUTH parameters described
below are relative to the central body for which the spacecraft
is orbiting and not the target of the observation.
SPACECRAFT_ALTITUDE = xxxxxxx.xxx
Altitude of spacecraft above reference ellipsoid. Distance is
measured to closest point on ellipsoid.
SUB_SPACECRAFT_AZIMUTH = xxxxxxxx.xxx
Azimuth angle of sub-spacecraft point in image. Method of
measurement is same as for smear azimuth (see above).
SPACECRAFT_SOLAR_DISTANCE = xxxxxxxx.xxxx
Analogous to "target center distance," but Sun replaces target body
in computation.
SC_SUN_POSITION_VECTOR = (xxxxxxx.xx, yyyyyy.yy, zzzzzzz.zz)
x-, y-, and z- components of position vector from observer to sun,
center expressed in J2000 coordinates, and corrected for light time
and stellar aberration, evaluated at epoch at which image was
taken. Units are kilometers.
SC_SUN_VELOCITY_VECTOR = (xxxxxxxx.xx, yyyyyyy.yy, zzzzzzz.zz)
x-, y-, and z- components of velocity vector of sun relative to
observer, expressed in J2000 coordinates, and corrected for light
time, evaluated at epoch at which image was taken. Units are
kilometers/second.
SOLAR_DISTANCE = xxxxxxxx.xx
Distance from target body center to Sun. The Sun position used is
that described above.
SUB_SOLAR_AZIMUTH = xxxxx.xx
Azimuth of the apparent sub-solar point, as seen by the spacecraft.
This point is the surface intercept of the target-center-to-Sun
vector, evaluated at the camera epoch minus one-way light time from
target to spacecraft at that epoch spacecraft at that epoch.
Azimuth is measured as described above. Target body position
relative to the spacecraft is corrected for light-time and stellar
aberration. Target body orientation is corrected for light-time.
SUB_SOLAR_LATITUDE = xxxx.xx
SUB_SOLAR_LONGITUDE = xxxx.xx
Planetocentric latitude and longitude of the apparent sub-solar
point.
INCIDENCE_ANGLE = xxxx.xx
PHASE_ANGLE = xxxx.xx
EMISSION_ANGLE = xxxx.xx
These angles are measured at the camera boresight intercept point.
The target-Sun vector is the same as that used in the sub-solar
point computation. The spacecraft-target vector is the same as
that used in the camera boresight intercept computation.
The INCIDENCE ANGLE is the angle between the target-Sun vector and
the local vertical vector at the boresight intercept.
The PHASE ANGLE is measured between the boresight intercept-to-Sun
vector and the negative of the boresight vector.
The EMISSION ANGLE is measured between the negative of the
boresight vector and the local vertical vector at the boresight
intercept.
LOCAL_HOUR_ANGLE = xxxx.xx
The angle from the negative of the target-body-to-Sun vector to the
projection of the negative of the spacecraft-to-target vector onto
the target's instantaneous orbital plane. Both vectors are
computed as in the sub-spacecraft point computation. The angle is
measured in a counterclockwise direction when viewed from North of
the ecliptic plane.
LIGHT_SOURCE_NAME = "xxxxx"
Name of secondary light source.
EARTH when making lunar observations
MOON when making earth observations
LIGHT_SOURCE_DISTANCE = xxxxxx.xxx
Distance from target body center and secondary light source center.
SUB_LIGHT_SOURCE_AZIMUTH = xxxx.xx
Analogs to sub solar azimuth but using secondary light source
instead of sun.
SUB_LIGHT_SOURCE_LATITUDE = xxxx.xx
SUB_LIGHT_SOURCE_LONGITUDE = xxxx.xx
Analogs to sub solar latitude and longitude but using secondary
light source instead of sun.
LIGHT_SOURCE_INCIDENCE_ANGLE = xxxx.xx
LIGHT_SOURCE_PHASE_ANGLE = xxxx.xx
Analogs to incidence and phase angles but using secondary light
source instead of sun.
OBJECT = IMAGE_HISTOGRAM
ITEMS = 256
DATA_TYPE = LSB_INTEGER
ITEM_BYTES = 8
END_OBJECT
These keywords describe the histogram object.
OBJECT = BROWSE_IMAGE
LINES = xxxx
LINE_SAMPLES = xxxx
SAMPLING_FACTOR = 8
SAMPLE_TYPE = UNSIGNED_INTEGER
SAMPLE_BITS = 8
END_OBJECT
These keywords describe the browse image object. The browse
image is an uncompressed subsampled version of the image.
SAMPLING_FACTOR refers to the subsampling of every N-th pixel
in the line and sample direction. The pixel values in the
NxN array are averaged before subsampling.
OBJECT = IMAGE
ENCODING_TYPE = "CLEM-JPEG-0"
ENCODING_COMPRESSION_RATIO = xxxx.xx
LINES = xxxx
LINE_SAMPLES = xxxx
SAMPLE_TYPE = UNSIGNED_INTEGER
SAMPLE_BITS = 8
MAXIMUM = xxx
MINIMUM = xxx
MEAN = xxx
STANDARD_DEVIATION = xxxx.xxx
CHECKSUM = xxxxxxxx
END_OBJECT
END
These keywords describe the image object. Data are in a compressed
form, the huffman table, and DCT coefficients are stored in the
object. Access to this object is through the decompression software.
MINIMUM, MAXIMUM, MEAN, and STANDARD_DEVIATION refers to the DN values
of the image array. The CHECKSUM parameter refers to the sum of the
bytes in the object in compressed form. The ENCODING_COMPRESSION_RATIO
specifies the compression factor of the data. There are three permitted
values for the ENCODING_TYPE: "N/A" indicates the image was not
compressed on the spacecraft and so the data are not in a compressed
format. "CLEM-JPEG-0" and "CLEM-JPEG-1" indicates the data were
compressed onboard the spacecraft and the data are stored in a
compressed form. See Appendix II for a description of the two data
decompression forms.
APPENDIX I - SPICE Kernel Files Used In Clementine Data Products
The following SPICE kernel files were inputs to the Picture Geometry
program (PICGEO) used to compute the geometric quantities found in the
PDS image labels and the Image Index files (IMGINDX.TAB) archived in
this volume set. Improvements to some of these fundamental ancillary
data will be made as further analysis of Clementine data continues, so
the geometric quantities found in the labels should not be used for
precision science data analyses.
clemdef.bsp:
Clementine spacecraft trajectory file. The ephemeris in this file was
produced by the Naval Research Laboratory, based on orbit solutions
provided by the Goddard Space Flight Center Flight Dynamics Facility.
The NRL data, given in the SERF form, were converted to the SPICE SPK
format using the serf2spk utility provided by NAIF.
de245.bsp:
JPL planetary and lunar ephemeris file, in SPICE SPK format.
clemdef.bck:
Clementine spacecraft orientation file. The pointing in this file is
discrete, stored every 5 seconds during periods of imaging and every 60
seconds during periods of non-imaging. There are gaps in coverage. The
pointing data in this file were NOT corrected for known discrepancies
between A- and B- star tracker alignment. The data are in SPICE CK
format.
dspse002.tsc:
Clementine spacecraft clock coefficients file, in SPICE SCLK format.
pck00003.tpc:
Planetary constants kernel file, in the SPICE text-PcK format. This was
used for modeling the size, shape and orientation of the earth, and the
size and shape (not orientation) of the moon.
de245l.bpc:
Lunar orientation model using numerically integrated physical
librations. This model uses the mean earth axes, not the principal axes
used in the IAU publications from which the pck00003.tpc data were
obtained. The difference between these two models is thought to be
several hundred meters.
naif0003.tls:
NAIF leapseconds kernel file, used for converting between Universal Time
Coordinated (UTC) and Barycentric Dynamical Time (TDB, also called
Ephemeris Time, or ET).
The seven instrument kernel files below contain the instrument mounting
alignment relative to the spacecraft, and the following instrument
geometric parameters: focal length, focal plane dimension, pixel size,
and the coefficient of radially symmetric optical distortion. ASTAR and
BSTAR are the A- and B- star trackers that provided spacecraft attitude
reference as well as scientific images.
hires005.ti: HIRES instrument kernel file.
uvvis005.ti: UVVIS instrument kernel file.
lwir005.ti: LWIR instrument kernel file.
nir005.ti: NIR instrument kernel file.
lidar002.ti: LIDAR instrument kernel file.
astar004.ti: ASTAR instrument kernel file.
bstar004.ti: BSTAR instrument kernel file.
APPENDIX II - Data Compression Coefficients
The Clementine Data Handling Unit (DHU) permits 4 data compression
parameter sets to be loaded at any given time, i.e. Sets 0-3. These data
compression parameter sets are used to drive the MATRA compression chip.
This chip permits the real time compression of images using a
compression scheme that is similar to the JPEG standard but not
identical.
Each data compression parameter set is composed of:
TabQ table - which contains 64 values
Huffman Table - which contains the huffman encoding constants,
TabF vector - which contains a vector with 16 possible
scaling constants to use.
During the Clementine mission:
<> Set 0 corresponded to MATRA's default data compression parameter set.
The ENCODING_TYPE = "CLEM-JPEG-0" signifies Set 0 parameters
were used in the compression.
<> Set 1 corresponded to a flat quantization table for all frequencies.
This is the set that was primarily used during the whole mission.
The ENCODING_TYPE = "CLEM-JPEG-1" signifies Set 1 parameters
were used in the compression.
<> Sets 2-3 were identical to Set 1. If needed they were going to be
modified during flight. After a number of quick studies, using
data from the first few orbits around the Moon, it was decided that
this was not needed.
BASIC DIFFERENCE BETWEEN STANDARD JPEG AND THE MATRA IMPLEMENTATION
Standard JPEG Frequency Quantization Scheme
In the standard JPEG algorithm the frequency coefficients X(u,v) [using
here a notation similar to the one used in the English version of the
MATRA chip manual] are transformed by the following equation before the
frequency coefficients are Huffman encoded:
Xq(u,v) = int9bit[X(u,v)/q(u,v)] (1)
where,
X(u,v) is a 12 bit signed number representing the DCT coefficient
at the frequency indices (u,v).
q(u,v) quantization table coefficient at the frequency index (u,v),
this is an 8 bit positive number (1-255).
In the decompression stage the value of X(u,v) is reconstructed from the
following equation:
Xr(u,v) = int9bit[X(u,v)/q(u,v)].q(u,v)
Equation (1) is a lossy operation due to the integer truncation.
For the set of lunar test images we have been working with a small value
of q(u,v), say q(u,v)=1, results in compression ratios close to the
original CLEMENTINE baseline requirement of 4 to 1. Hence we were
particular interested in looking at what is the smaller value of q'(u,v)
that can be represented by the MATRA chip hardware.
MATRA's Implementations of the JPEG Frequency Quantization Scheme
In the MATRA chip the desired quantization coefficient factor, q(u,v),
is approximated in hardware using an effective q'(u,v), i.e.
Xq'(u,v) = int9bit[X(u,v)/q'(u,v)]
= int9bit[int8bit[ ((TABF*TABQ(u,v))/64))/4094)).X(u,v)] (2)
where:
TABF is an 8 bit positive quantity used for scaling purposes,
TABQ (u,v) is a derived 8 bit positive number defined by
TABQ=int8bit[255*10/q(u,v)]
In other words, in the MATRA chip a desired JPEG quantization
coefficient value, q(u,v), is implemented as an effective q'(u,v) value
of:
q'(u,v)= 4094/(int8bit[TABF.TABQ/64])
= 4094/(int8bit[(TABF/64).int8bit[(255*10)/q(u,v)])
>= 4
Notice that since TABF and TABQ are 8 bit positive numbers it follows
that 4 <= q'(u,v).
Hence, the minimum effective quantization table coefficient value
achievable in the MATRA chip is four.
The following Table summarizes the data compression parameter sets
loaded to the Clementine Spacecraft during Mission Operations. Note
that only set 0 and 1 are distinct.
TabF Set0 Set1 Set2 Set3
TABF(00) FFh FFh FFh FFh
TABF(01) FFh FFh FFh FFh
TABF(02) FFh FFh FFh FFh
TABF(03) FFh FFh FFh FFh
TABF(04) BDh BDh BDh BDh
TABF(05) 8dh 8dh 8dh 8dh
TABF(06) 6Fh 6Fh 6Fh 6Fh
TABF(07) 59h 59h 59h 59h
TABF(08) 4Bh 4Bh 4Bh 4Bh
TABF(09) 3fh 3fh 3fh 3fh
TABF(10) 37h 37h 37h 37h
TABF(11) 30h 30h 30h 30h
TABF(12) 2Bh 2Bh 2Bh 2Bh
TABF(13) 2bh 2bh 2bh 2bh
TABF(14) 26h 26h 26h 26h
TABF(15) 23h 23h 23h 23h
TabQ Value
Q Set0 S1 S2 S3
Q(0,0) 9Fh FF FF FF
Q(0,1) D4h FF FF FF
Q(0,2) B6h FF FF FF
Q(0,3) B6h FF FF FF
Q(0,4) 8Eh FF FF FF
Q(0,5) 6Ah FF FF FF
Q(0,6) 34h FF FF FF
Q(0,7) 23h FF FF FF
Q(1,0) E8h FF FF FF
Q(1,1) D4h FF FF FF
Q(1,2) C4h FF FF FF
Q(1,3) 96h FF FF FF
Q(1,4) 74h FF FF FF
Q(1,5) 49h FF FF FF
Q(1,6) 28h FF FF FF
Q(1,7) 1Ch FF FF FF
Q(2,0) FFh FF FF FF
Q(2,1) B6h FF FF FF
Q(2,2) 9Fh FF FF FF
Q(2,3) 74h FF FF FF
Q(2,4) 45h FF FF FF
Q(2,5) 2Eh FF FF FF
Q(2,6) 21h FF FF FF
Q(2,7) 1Bh FF FF FF
Q(3,0) 9Fh FF FF FF
Q(3,1) 86h FF FF FF
Q(3,2) 6Ah FF FF FF
Q(3,3) 58h FF FF FF
Q(3,4) 2Eh FF FF FF
Q(3,5) 28h FF FF FF
Q(3,6) 1Dh FF FF FF
Q(3,7) 1Ah FF FF FF
Q(4,0) 6Ah FF FF FF
Q(4,1) 62h FF FF FF
Q(4,2) 40h FF FF FF
Q(4,3) 32h FF FF FF
Q(4,4) 26h FF FF FF
Q(4,5) 1Fh FF FF FF
Q(4,6) 19h FF FF FF
Q(4,7) 17h FF FF FF
Q(5,0) 40h FF FF FF
Q(5,1) 2Ch FF FF FF
Q(5,2) 2Dh FF FF FF
Q(5,3) 1Dh FF FF FF
Q(5,4) 17h FF FF FF
Q(5,5) 19h FF FF FF
Q(5,6) 15h FF FF FF
Q(5,7) 1Ah FF FF FF
Q(6,0) 32h FF FF FF
Q(6,1) 2Ah FF FF FF
Q(6,2) 25h FF FF FF
Q(6,3) 20h FF FF FF
Q(6,4) 19h FF FF FF
Q(6,5) 17h FF FF FF
Q(6,6) 15h FF FF FF
Q(6,7) 19h FF FF FF
Q(7,0) 2Ah FF FF FF
Q(7,1) 2Eh FF FF FF
Q(7,2) 2Eh FF FF FF
Q(7,3) 29h FF FF FF
Q(7,4) 21h FF FF FF
Q(7,5) 1Ch FF FF FF
Q(7,6) 19h FF FF FF
Q(7,7) 1Ah FF FF FF
Huf Tab Set0 Set1 Set2 Set3
VLC(00) 04h 04h 04h 04h
VLC(01) 05h 05h 05h 05h
VLC(02) 00h 00h 00h 00h
VLC(03) 00h 00h 00h 00h
VLC(04) 00h 00h 00h 00h
VLC(05) 00h 00h 00h 00h
VLC(06) 00h 00h 00h 00h
VLC(07) 00h 00h 00h 00h
VLC(08) 00h 00h 00h 00h
VLC(09) 00h 00h 00h 00h
VLC(10) 00h 00h 00h 00h
VLC(11) 00h 00h 00h 00h
VLC(12) 00h 00h 00h 00h
VLC(13) 00h 00h 00h 00h
VLC(14) 00h 00h 00h 00h
VLC(15) 00h 00h 00h 00h
VLC(16) 00h 00h 00h 00h
VLC(17) 00h 00h 00h 00h
VLC(18) 00h 00h 00h 00h
VLC(19) 00h 00h 00h 00h
VLC(20) 00h 00h 00h 00h
VLC(21) 00h 00h 00h 00h
VLC(22) 00h 00h 00h 00h
VLC(23) 00h 00h 00h 00h
VLC(24) 00h 00h 00h 00h
VLC(25) 00h 00h 00h 00h
VLC(26) 00h 00h 00h 00h
VLC(27) 00h 00h 00h 00h
VLC(28) 00h 00h 00h 00h
VLC(29) 00h 00h 00h 00h
VLC(30) 10h 10h 10h 10h
VLC(31) 2Fh 2Fh 2Fh 2Fh
VLC(32) 02h 02h 02h 02h
VLC(33) 00h 00h 00h 00h
VLC(34) 04h 04h 04h 04h
VLC(35) 03h 03h 03h 03h
VLC(36) 05h 05h 05h 05h
VLC(37) 1Bh 1Bh 1Bh 1Bh
VLC(38) 06h 06h 06h 06h
VLC(39) 17h 17h 17h 17h
VLC(40) 06h 06h 06h 06h
VLC(41) 37h 37h 37h 37h
VLC(42) 07h 07h 07h 07h
VLC(43) 2Fh 2Fh 2Fh 2Fh
VLC(44) 07h 07h 07h 07h
VLC(45) 6Fh 6Fh 6Fh 6Fh
VLC(46) 08h 08h 08h 08h
VLC(47) 9Fh 9Fh 9Fh 9Fh
VLC(48) 08h 08h 08h 08h
VLC(49) 5Fh 5Fh 5Fh 5Fh
VLC(50) 09h 09h 09h 09h
VLC(51) 1Fh 1Fh 1Fh 1Fh
VLC(52) 09h 09h 09h 09h
VLC(53) 9Fh 9Fh 9Fh 9Fh
VLC(54) 09h 09h 09h 09h
VLC(55) 5Fh 5Fh 5Fh 5Fh
VLC(56) 0Ah 0Ah 0Ah 0Ah
VLC(57) 5Fh 5Fh 5Fh 5Fh
VLC(58) 0Bh 0Bh 0Bh 0Bh
VLC(59) 5Fh 5Fh 5Fh 5Fh
VLC(60) 0Fh 0Fh 0Fh 0Fh
VLC(61) 03h 03h 03h 03h
VLC(62) 10h 10h 10h 10h
VLC(63) AFh AFh AFh AFh
VLC(64) 02h 02h 02h 02h
VLC(65) 02h 02h 02h 02h
VLC(66) 06h 06h 06h 06h
VLC(67) 27h 27h 27h 27h
VLC(68) 08h 08h 08h 08h
VLC(69) 1Fh 1Fh 1Fh 1Fh
VLC(70) 09h 09h 09h 09h
VLC(71) EFh EFh EFh EFh
VLC(72) 0Ah 0Ah 0Ah 0Ah
VLC(73) 1Fh 1Fh 1Fh 1Fh
VLC(74) 0Ah 0Ah 0Ah 0Ah
VLC(75) 9Fh 9Fh 9Fh 9Fh
VLC(76) 0Bh 0Bh 0Bh 0Bh
VLC(77) 1Fh 1Fh 1Fh 1Fh
VLC(78) 0Bh 0Bh 0Bh 0Bh
VLC(79) 9Fh 9Fh 9Fh 9Fh
VLC(80) 0Ch 0Ch 0Ch 0Ch
VLC(81) EFh EFh EFh EFh
VLC(82) 10h 10h 10h 10h
VLC(83) 7Dh 7Dh 7Dh 7Dh
VLC(84) 10h 10h 10h 10h
VLC(85) E3h E3h E3h E3h
VLC(86) 10h 10h 10h 10h
VLC(87) 0Bh 0Bh 0Bh 0Bh
VLC(88) 10h 10h 10h 10h
VLC(89) 9Bh 9Bh 9Bh 9Bh
VLC(90) 10h 10h 10h 10h
VLC(91) 47h 47h 47h 47h
VLC(92) 10h 10h 10h 10h
VLC(93) D7h D7h D7h D7h
VLC(94) 10h 10h 10h 10h
VLC(95) 6Fh 6Fh 6Fh 6Fh
VLC(96) 03h 03h 03h 03h
VLC(97) 01h 01h 01h 01h
VLC(98) 07h 07h 07h 07h
VLC(99) 4Fh 4Fh 4Fh 4Fh
VLC(100) 0Ah 0Ah 0Ah 0Ah
VLC(101) EFh EFh EFh EFh
VLC(102) 0Bh 0Bh 0Bh 0Bh
VLC(103) EFh EFh EFh EFh
VLC(104) 10h 10h 10h 10h
VLC(105) 69h 69h 69h 69h
VLC(106) 10h 10h 10h 10h
VLC(107) 79h 79h 79h 79h
VLC(108) 10h 10h 10h 10h
VLC(109) 65h 65h 65h 65h
VLC(110) 10h 10h 10h 10h
VLC(111) 75h 75h 75h 75h
VLC(112) 10h 10h 10h 10h
VLC(113) 6Dh 6Dh 6Dh 6Dh
VLC(114) 10h 10h 10h 10h
VLC(115) FDh FDh FDh FDh
VLC(116) 10h 10h 10h 10h
VLC(117) 13h 13h 13h 13h
VLC(118) 10h 10h 10h 10h
VLC(119) 8Bh 8Bh 8Bh 8Bh
VLC(120) 10h 10h 10h 10h
VLC(121) 5Bh 5Bh 5Bh 5Bh
VLC(122) 10h 10h 10h 10h
VLC(123) C7h C7h C7h C7h
VLC(124) 10h 10h 10h 10h
VLC(125) 37h 37h 37h 37h
VLC(126) 10h 10h 10h 10h
VLC(127) EFh EFh EFh EFh
VLC(128) 04h 04h 04h 04h
VLC(129) 0Dh 0Dh 0Dh 0Dh
VLC(130) 09h 09h 09h 09h
VLC(131) 6Fh 6Fh 6Fh 6Fh
VLC(132) 0Ch 0Ch 0Ch 0Ch
VLC(133) 6Fh 6Fh 6Fh 6Fh
VLC(134) 10h 10h 10h 10h
VLC(135) F1h F1h F1h F1h
VLC(136) 10h 10h 10h 10h
VLC(137) E9h E9h E9h E9h
VLC(138) 10h 10h 10h 10h
VLC(139) F9h F9h F9h F9h
VLC(140) 10h 10h 10h 10h
VLC(141) E5h E5h E5h E5h
VLC(142) 10h 10h 10h 10h
VLC(143) F5h F5h F5h F5h
VLC(144) 10h 10h 10h 10h
VLC(145) EDh EDh EDh EDh
VLC(146) 10h 10h 10h 10h
VLC(147) 03h 03h 03h 03h
VLC(148) 10h 10h 10h 10h
VLC(149) 93h 93h 93h 93h
VLC(150) 10h 10h 10h 10h
VLC(151) 4Bh 4Bh 4Bh 4Bh
VLC(152) 10h 10h 10h 10h
VLC(153) DBh DBh DBh DBh
VLC(154) 10h 10h 10h 10h
VLC(155) 27h 27h 27h 27h
VLC(156) 10h 10h 10h 10h
VLC(157) B7h B7h B7h B7h
VLC(158) 10h 10h 10h 10h
VLC(159) 1Fh 1Fh 1Fh 1Fh
VLC(160) 05h 05h 05h 05h
VLC(161) 0Bh 0Bh 0Bh 0Bh
VLC(162) 0Bh 0Bh 0Bh 0Bh
VLC(163) 6Fh 6Fh 6Fh 6Fh
VLC(164) 10h 10h 10h 10h
VLC(165) 91h 91h 91h 91h
VLC(166) 10h 10h 10h 10h
VLC(167) 09h 09h 09h 09h
VLC(168) 10h 10h 10h 10h
VLC(169) 19h 19h 19h 19h
VLC(170) 10h 10h 10h 10h
VLC(171) 05h 05h 05h 05h
VLC(172) 10h 10h 10h 10h
VLC(173) 15h 15h 15h 15h
VLC(174) 10h 10h 10h 10h
VLC(175) 0Dh 0Dh 0Dh 0Dh
VLC(176) 10h 10h 10h 10h
VLC(177) 1Dh 1Dh 1Dh 1Dh
VLC(178) 10h 10h 10h 10h
VLC(179) 83h 83h 83h 83h
VLC(180) 10h 10h 10h 10h
VLC(181) 53h 53h 53h 53h
VLC(182) 10h 10h 10h 10h
VLC(183) CBh CBh CBh CBh
VLC(184) 10h 10h 10h 10h
VLC(185) 3Bh 3Bh 3Bh 3Bh
VLC(186) 10h 10h 10h 10h
VLC(187) A7h A7h A7h A7h
VLC(188) 10h 10h 10h 10h
VLC(189) 77h 77h 77h 77h
VLC(190) 10h 10h 10h 10h
VLC(191) 9Fh 9Fh 9Fh 9Fh
VLC(192) 06h 06h 06h 06h
VLC(193) 07h 07h 07h 07h
VLC(194) 10h 10h 10h 10h
VLC(195) 21h 21h 21h 21h
VLC(196) 10h 10h 10h 10h
VLC(197) 51h 51h 51h 51h
VLC(198) 10h 10h 10h 10h
VLC(199) 89h 89h 89h 89h
VLC(200) 10h 10h 10h 10h
VLC(201) 99h 99h 99h 99h
VLC(202) 10h 10h 10h 10h
VLC(203) 85h 85h 85h 85h
VLC(204) 10h 10h 10h 10h
VLC(205) 95h 95h 95h 95h
VLC(206) 10h 10h 10h 10h
VLC(207) 8Dh 8Dh 8Dh 8Dh
VLC(208) 10h 10h 10h 10h
VLC(209) 9Dh 9Dh 9Dh 9Dh
VLC(210) 10h 10h 10h 10h
VLC(211) 43h 43h 43h 43h
VLC(212) 10h 10h 10h 10h
VLC(213) D3h D3h D3h D3h
VLC(214) 10h 10h 10h 10h
VLC(215) 2Bh 2Bh 2Bh 2Bh
VLC(216) 10h 10h 10h 10h
VLC(217) BBh BBh BBh BBh
VLC(218) 10h 10h 10h 10h
VLC(219) 67h 67h 67h 67h
VLC(220) 10h 10h 10h 10h
VLC(221) F7h F7h F7h F7h
VLC(222) 10h 10h 10h 10h
VLC(223) 5Fh 5Fh 5Fh 5Fh
VLC(224) 07h 07h 07h 07h
VLC(225) 0Fh 0Fh 0Fh 0Fh
VLC(226) 10h 10h 10h 10h
VLC(227) A1h A1h A1h A1h
VLC(228) 10h 10h 10h 10h
VLC(229) D1h D1h D1h D1h
VLC(230) 10h 10h 10h 10h
VLC(231) 49h 49h 49h 49h
VLC(232) 10h 10h 10h 10h
VLC(233) 59h 59h 59h 59h
VLC(234) 10h 10h 10h 10h
VLC(235) 45h 45h 45h 45h
VLC(236) 10h 10h 10h 10h
VLC(237) 55h 55h 55h 55h
VLC(238) 10h 10h 10h 10h
VLC(239) 4Dh 4Dh 4Dh 4Dh
VLC(240) 10h 10h 10h 10h
VLC(241) 5Dh 5Dh 5Dh 5Dh
VLC(242) 10h 10h 10h 10h
VLC(243) C3h C3h C3h C3h
VLC(244) 10h 10h 10h 10h
VLC(245) 33h 33h 33h 33h
VLC(246) 10h 10h 10h 10h
VLC(247) ABh ABh ABh ABh
VLC(248) 10h 10h 10h 10h
VLC(249) 7Bh 7Bh 7Bh 7Bh
VLC(250) 10h 10h 10h 10h
VLC(251) E7h E7h E7h E7h
VLC(252) 10h 10h 10h 10h
VLC(253) 0Fh 0Fh 0Fh 0Fh
VLC(254) 10h 10h 10h 10h
VLC(255) DFh DFh DFh DFh
VLC(256) 0Ah 0Ah 0Ah 0Ah
VLC(257) 6Fh 6Fh 6Fh 6Fh
VLC(258) 10h 10h 10h 10h
VLC(259) 61h 61h 61h 61h
VLC(260) 10h 10h 10h 10h
VLC(261) 31h 31h 31h 31h
VLC(262) 10h 10h 10h 10h
VLC(263) C9h C9h C9h C9h
VLC(264) 10h 10h 10h 10h
VLC(265) D9h D9h D9h D9h
VLC(266) 10h 10h 10h 10h
VLC(267) C5h C5h C5h C5h
VLC(268) 10h 10h 10h 10h
VLC(269) D5h D5h D5h D5h
VLC(270) 10h 10h 10h 10h
VLC(271) CDh CDh CDh CDh
VLC(272) 10h 10h 10h 10h
VLC(273) DDh DDh DDh DDh
VLC(274) 10h 10h 10h 10h
VLC(275) 23h 23h 23h 23h
VLC(276) 10h 10h 10h 10h
VLC(277) B3h B3h B3h B3h
VLC(278) 10h 10h 10h 10h
VLC(279) 6Bh 6Bh 6Bh 6Bh
VLC(280) 10h 10h 10h 10h
VLC(281) FBh FBh FBh FBh
VLC(282) 10h 10h 10h 10h
VLC(283) 17h 17h 17h 17h
VLC(284) 10h 10h 10h 10h
VLC(285) 8Fh 8Fh 8Fh 8Fh
VLC(286) 10h 10h 10h 10h
VLC(287) 3Fh 3Fh 3Fh 3Fh
VLC(288) 03h 03h 03h 03h
VLC(289) 02h 02h 02h 02h
VLC(290) 03h 03h 03h 03h
VLC(291) 06h 06h 06h 06h
VLC(292) 03h 03h 03h 03h
VLC(293) 01h 01h 01h 01h
VLC(294) 02h 02h 02h 02h
VLC(295) 00h 00h 00h 00h
VLC(296) 03h 03h 03h 03h
VLC(297) 05h 05h 05h 05h
VLC(298) 03h 03h 03h 03h
VLC(299) 03h 03h 03h 03h
VLC(300) 04h 04h 04h 04h
VLC(301) 07h 07h 07h 07h
VLC(302) 05h 05h 05h 05h
VLC(303) 0Fh 0Fh 0Fh 0Fh
VLC(304) 06h 06h 06h 06h
VLC(305) 1Fh 1Fh 1Fh 1Fh
VLC(306) 07h 07h 07h 07h
VLC(307) 3Fh 3Fh 3Fh 3Fh
VLC(308) 00h 00h 00h 00h
VLC(309) 00h 00h 00h 00h
VLC(310) 00h 00h 00h 00h
VLC(311) 00h 00h 00h 00h
VLC(312) 00h 00h 00h 00h
VLC(313) 00h 00h 00h 00h
VLC(314) 00h 00h 00h 00h
VLC(315) 00h 00h 00h 00h
VLC(316) 00h 00h 00h 00h
VLC(317) 00h 00h 00h 00h
VLC(318) 00h 00h 00h 00h
VLC(319) 00h 00h 00h 00h
http://clementine.cnes.fr/documentation/edrsis.asc
(possibly inaccurate URL)
07/1998