PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 470 FILE_RECORDS = 7389 DESCRIPTION = "COMMAND.TAB provides a detailed description of the commands used on the Mars Pathfinder mission. Note that these are the values that were commanded, and may in some instances differ from the values that were actually used, which are shown in the EDRINDEX.TAB file. The records in this table are keyed on the IMAGE_ID, which represents an individual command with a set of unique command parameters. Each command usually produced multiple images." ^TABLE = "COMMAND.TAB" DATA_SET_ID = "MPFL-M-IMP-2-EDR-V1.0" MISSION_NAME = "MARS PATHFINDER" INSTRUMENT_HOST_NAME = "MARS PATHFINDER LANDER" INSTRUMENT_NAME = "IMAGER FOR MARS PATHFINDER" OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROW_BYTES = 470 ROWS = 7389 COLUMNS = 44 OBJECT = COLUMN NAME = IMAGE_ID DATA_TYPE = ASCII_INTEGER START_BYTE = 1 BYTES = 10 FORMAT = "I10" DESCRIPTION = "Uniquely identifies the observation parameters of an image. The most significant four digits identify the command sequence that contains the imaging command. The middle two digits indicate the version of the command sequence, and the right four digits identify the image within a single imaging sequence." END_OBJECT = COLUMN OBJECT = COLUMN NAME = COMMAND_VERSION_NUMBER DATA_TYPE = ASCII_INTEGER START_BYTE = 12 BYTES = 2 FORMAT = "I2" DESCRIPTION = "The version number of the command. The commands (ie., IMAGE_IDs) were intended to be unique, but in a few cases they were re-used with different command parameters. This keyword was added to distinguish between differing versions of the commands. Valid range is 1 to 9, where the lowest version number reflects the oldest version of a command." END_OBJECT = COLUMN OBJECT = COLUMN NAME = APPLICATION_PACKET_ID DATA_TYPE = ASCII_INTEGER START_BYTE = 15 BYTES = 2 FORMAT = "I2" DESCRIPTION = "The id of the telemetry packet queue to which the image data was directed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = AUTO_EXPOSURE_DATA_CUT DATA_TYPE = ASCII_INTEGER START_BYTE = 18 BYTES = 4 FORMAT = "I4" DESCRIPTION = "The DN value which a specified fraction of pixels is permitted to exceed. Valid range: 0 to 4095." END_OBJECT = COLUMN OBJECT = COLUMN NAME = AUTO_EXPOSURE_PIXEL_FRACTION DATA_TYPE = ASCII_REAL START_BYTE = 23 BYTES = 6 FORMAT = "F6.2" DESCRIPTION = "The percentage of pixels whose value is higher than the auto exposure data cut. This field isonly applicable if the exposure type is set to AUTO or INCREMENTAL. Valid range: 0 to 100." END_OBJECT = COLUMN OBJECT = COLUMN NAME = AZIMUTH_MOTOR_CLICKS DATA_TYPE = ASCII_INTEGER START_BYTE = 30 BYTES = 3 FORMAT = "I3" DESCRIPTION = "The number of motor step counts the camera rotated in the horizontal direction from the low hard stop. Since each step count is 0.553 degrees, the azimuthal position of the camera can be derived from this value. Valid range is 0 to 1023." END_OBJECT = COLUMN OBJECT = COLUMN NAME = BAD_PIXEL_REPLACEMENT_FLAG DATA_TYPE = CHARACTER START_BYTE = 35 BYTES = 1 FORMAT = "A1" DESCRIPTION = "Indicates whether or not bad pixel replacement processing was completed. If set to 'T' (TRUE), certain pixels in the image were replaced based on a bad pixel table. Valid values: T, F." END_OBJECT = COLUMN OBJECT = COLUMN NAME = COMMAND_DESCRIPTION DATA_TYPE = CHARACTER START_BYTE = 39 BYTES = 94 FORMAT = "A94" DESCRIPTION = "The textual description associated with a command name." END_OBJECT = COLUMN OBJECT = COLUMN NAME = COMMAND_NAME DATA_TYPE = CHARACTER START_BYTE = 136 BYTES = 16 FORMAT = "A16" DESCRIPTION = "The name of an uplinked command sent to a spacecraft or instrument. For the IMP EDRs, this indicates the method the IMP camera was instructed to use to determine its pointing direction. Valid values: IMP_IMAGE_AZ_EL, IMP_IMAGE_LCLGRD, IMP_IMAGE_LCLVEC, IMP_IMAGE_OBJECT, IMP_IMAGE_VECTOR." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DARK_CURRENT_CORRECTION_FLAG DATA_TYPE = CHARACTER START_BYTE = 155 BYTES = 1 FORMAT = "A1" DESCRIPTION = "A flag indicating whether or not a dark current correction was applied to the image. For MPF, this correction was applied to the image on board the spacecraft, before the image was transmitted to Earth. Valid values: T, F." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DOWNLOAD_TYPE DATA_TYPE = CHARACTER START_BYTE = 159 BYTES = 6 FORMAT = "A6" DESCRIPTION = "Specifies which image data to download, any or all of: image data (IM), dark current strip (DS), and null pixel data (NS). Valid values: NONE, DS, IM, DSIM, NS, DSNS, IMNS, DSIMNS." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ELEVATION_MOTOR_CLICKS DATA_TYPE = ASCII_INTEGER START_BYTE = 167 BYTES = 3 FORMAT = "I3" DESCRIPTION = "The number of motor step counts the camera rotated in the vertical direction from the low hard stop. Since each step count is 0.553 degrees, the elevational position of the camera can be derived from this value. Valid range is 0 to 1023." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EXPOSURE_COUNT DATA_TYPE = ASCII_INTEGER START_BYTE = 171 BYTES = 1 FORMAT = "I1" DESCRIPTION = "Maximum number of exposures taken. Value is dependant on exposure type. Valid range: 0 - 16." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EXPOSURE_DURATION DATA_TYPE = ASCII_REAL START_BYTE = 173 BYTES = 7 FORMAT = "F7.1" DESCRIPTION = "The commanded integration time for MANUAL and AUTO exposures, measured in milliseconds." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EXPOSURE_TYPE DATA_TYPE = CHARACTER START_BYTE = 182 BYTES = 6 FORMAT = "A6" DESCRIPTION = "Exposure type for the image. Valid values: AUTO, INCR (incremental), MANUAL, PRETMD (pretimed), and NONE. AUTO exposure automatically adjusts the exposure time by iterating off of a pre-set exposure time. INCR exposure also automatically adjusts the exposure time, but iterates off of the exposure time from the previous image. MANUAL exposure is a single exposure with a set exposure time. PRETMD exposure uses the last exposure time used, regardless of the type of exposure it was. NONE indicates that the command moves only the camera and doesn't take an exposure." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FILTER_NAME DATA_TYPE = CHARACTER START_BYTE = 191 BYTES = 14 FORMAT = "A14" DESCRIPTION = "The name of the instrument filter through which the image was acquired. The numbers refer to the effective wavelength in nm of the filter for the left (L) or right (R) image. FILTER FILTER NUMBER NAME APPLICATION ----------------------------------------------- 0 L440_R440 Stereo, Geology 1 L450_R670 Solar 2 L885_R947 Solar 3 L925_R935 Solar 4 L935_R990 Solar 5 L670_R670 Stereo, Geology 6 L800_R750 Geology 7 L860_R-DIOPTER Geology 8 L900_R600 Geology 9 L930_R530 Stereo, Ranging, Geology 10 L1000_R480 Geology 11 L965_R965 Stereo, Ranging, Geology " END_OBJECT = COLUMN OBJECT = COLUMN NAME = FILTER_NUMBER DATA_TYPE = ASCII_INTEGER START_BYTE = 207 BYTES = 2 FORMAT = "I2" DESCRIPTION = "The number of the instrument filter through which the image was acquired. (See FILTER_NAME for details.)" END_OBJECT = COLUMN OBJECT = COLUMN NAME = FIRST_LINE DATA_TYPE = ASCII_INTEGER START_BYTE = 210 BYTES = 3 FORMAT = "I3" DESCRIPTION = "The line within a source image that corresponds to the first line in the sub-image. For the IMP EDRs, the source image is the complete 256x256 image area within the CCD." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FIRST_LINE_SAMPLE DATA_TYPE = ASCII_INTEGER START_BYTE = 214 BYTES = 3 FORMAT = "I3" DESCRIPTION = "The sample within a source image that corresponds to the first sample in the sub-image. For the IMP EDRs, the source image is the complete 256x256 image area within the CCD." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FLAT_FIELD_CORRECTION_FLAG DATA_TYPE = CHARACTER START_BYTE = 219 BYTES = 1 FORMAT = "A1" DESCRIPTION = "Indicates whether or not a flat field correction was applied to the image. For MPF, this correction was applied to the image on board the spacecraft, before the image was transmitted to Earth. Valid values: T, F." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FRAME_ID DATA_TYPE = CHARACTER START_BYTE = 223 BYTES = 5 FORMAT = "A5" DESCRIPTION = "Provides an identification for a particular instrument frame. Valid values are LEFT, RIGHT, BOTH, and HALFL. The IMP camera nominally operates in a mode where both the left and right images are exposed and transferred into the frame buffer simultaneously. Then either the RIGHT, LEFT, or BOTH frames are transmitted. For even shorter shutter times, the left image only may be transferred into the frame buffer (HALFL). The presence of BOTH in this field indicates that the image should be part of a stereo pair." END_OBJECT = COLUMN OBJECT = COLUMN NAME = GRID_POSITION_X DATA_TYPE = ASCII_REAL START_BYTE = 230 BYTES = 8 FORMAT = "F8.4" DESCRIPTION = "The north / south component of a positon defining the IMP pointing, measured with respect to the Martian Local Level Coordinate Frame (M Frame). A positive value indicates that the position was to the north of the lander; a negative value indicates it was to the south. The magnitude gives the distance, in meters, between the position and an east / west line drawn through the center of the lander base petal." END_OBJECT = COLUMN OBJECT = COLUMN NAME = GRID_POSITION_Y DATA_TYPE = ASCII_REAL START_BYTE = 239 BYTES = 8 FORMAT = "F8.4" DESCRIPTION = "The east / west component of a positon defining the IMP pointing, measured with respect to the Martian Local Level Coordinate Frame (M Frame). A positive value indicates that the position was to the east of the lander; a negative value indicates it was to the west. The magnitude gives the distance, in meters, between the position and an north / south line drawn through the center of the lander base petal." END_OBJECT = COLUMN OBJECT = COLUMN NAME = GRID_POSITION_Z DATA_TYPE = ASCII_REAL START_BYTE = 248 BYTES = 7 FORMAT = "F7.4" DESCRIPTION = "The vertical component of a position defining the IMP pointing, measured with respect to the Martian Local Level Coordinate Frame (M Frame). A positive value indicates that the position was below the lander base petal; a negative value indicates that it was above the base petal." END_OBJECT = COLUMN OBJECT = COLUMN NAME = HISTOGRAM_FLAG DATA_TYPE = CHARACTER START_BYTE = 257 BYTES = 1 FORMAT = "A1" DESCRIPTION = "A flag to indicate that the product returned was a histogram. Valid values: T, F." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INST_CMPRS_MODE DATA_TYPE = ASCII_INTEGER START_BYTE = 260 BYTES = 1 FORMAT = "I1" DESCRIPTION = "The targetted image quality or compression factor for on-board compression. Compression is obtained with Huffman or arithmetic entropy encoding, with or without LCT. Odd modes specify a targetted image quality, whereas even modes specify a targetted compression factor. Modes 1,2,5,6 utilize Huffman encoding; modes 3,4,7,8 use arithmetic encoding. Modes 5,6,7,8 use LCT. Mode 9 specifies RICE compression. Valid values: 1 to 9." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INST_CMPRS_NAME DATA_TYPE = CHARACTER START_BYTE = 263 BYTES = 60 FORMAT = "A60" DESCRIPTION = "The type of on-board compression used for data storage and transmission." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INST_CMPRS_PARAM DATA_TYPE = ASCII_INTEGER START_BYTE = 325 BYTES = 2 FORMAT = "I2" DESCRIPTION = "This is a JPEG compression specific variable. It specifies the on-board compression rate as image quality or compression factor, based on the selected instrument compression mode." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INST_CMPRS_QUANTZ_TBL_ID DATA_TYPE = ASCII_INTEGER START_BYTE = 328 BYTES = 1 FORMAT = "I1" DESCRIPTION = "The identifier for the reference table used for quantization in the frequency domain for on-board transform compression. This name or code should be specific enough to allow the user of the data to have sufficient information to reference the quantization table used to compress the data." END_OBJECT = COLUMN OBJECT = COLUMN NAME = IVP_TARGET_NAME DATA_TYPE = CHARACTER START_BYTE = 331 BYTES = 6 FORMAT = "A6" DESCRIPTION = "Specifies the image vector pointing object at which the IMP camera was aimed. Valid values include SUN, EARTH, PHOBOS, and NULL. Note that the camera was 'tricked' into pointing at other objects (like Deimos or stars) by directing it to point to Phobos, but redefining the position of Phobos in the sky." END_OBJECT = COLUMN OBJECT = COLUMN NAME = LINES DATA_TYPE = ASCII_INTEGER START_BYTE = 339 BYTES = 3 FORMAT = "I3" DESCRIPTION = "The total number of pixels along the vertical axis of an image." END_OBJECT = COLUMN OBJECT = COLUMN NAME = LINE_SAMPLES DATA_TYPE = ASCII_INTEGER START_BYTE = 343 BYTES = 3 FORMAT = "I3" DESCRIPTION = "The total number of pixels along the horizontal axis of an image." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PIXEL_AVERAGING_HEIGHT DATA_TYPE = ASCII_INTEGER START_BYTE = 347 BYTES = 1 FORMAT = "I1" DESCRIPTION = "The vertical dimension, in pixels, of the area over which pixels were averaged prior to image compression." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PIXEL_AVERAGING_WIDTH DATA_TYPE = ASCII_INTEGER START_BYTE = 349 BYTES = 1 FORMAT = "I1" DESCRIPTION = "The horizontal dimension, in pixels, of the area over which pixels were averaged prior to image compression." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SHUTTER_EFFECT_CORRECTION_FLAG DATA_TYPE = CHARACTER START_BYTE = 352 BYTES = 1 FORMAT = "A1" DESCRIPTION = "Indicates whether or not a shutter effect correction was applied to the image. The shutter effect correction involves the removal from the image of the shutter or fixed-pattern. For MPF, this correction was applied to the image on board the spacecraft, before the image was transmitted to Earth. Valid values: T, F." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SOURCE_PRODUCT_ID DATA_TYPE = CHARACTER START_BYTE = 356 BYTES = 16 FORMAT = "A16" DESCRIPTION = "Identifies a product used as input to create a new product. For MPF, this refers to the filenames of the SPICE kernels used to produce the image and its ancillary data." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SQRT_COMPRESSION_FLAG DATA_TYPE = CHARACTER START_BYTE = 375 BYTES = 1 FORMAT = "A1" DESCRIPTION = "Indicates whether or not square root compression was applied to the image. For MPF, this compression was performed on-board the lander, prior to transmission of the data to Earth. It involved the compression of the pixels from 12 bits down to 8 bits. Valid values: T, F." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SUBFRAME_FLAG DATA_TYPE = CHARACTER START_BYTE = 379 BYTES = 1 FORMAT = "A1" DESCRIPTION = "A flag to indicate that the image is not full size. Valid values: T, F." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SUM_FLAG DATA_TYPE = CHARACTER START_BYTE = 383 BYTES = 1 FORMAT = "A1" DESCRIPTION = "A flag to indicate that the product returned is a 'summation' file. For the IMP EDRs, this means that it contains two records, the first a list of the sums of the image columns, and the second a list of the sums of the image rows. Valid values: T, F." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ATMOS_FLAG DATA_TYPE = CHARACTER START_BYTE = 387 BYTES = 1 FORMAT = "A1" DESCRIPTION = "A flag that indicates that the given observation was directed at the sun. Valid values: T, F." END_OBJECT = COLUMN OBJECT = COLUMN NAME = OBSERVATION_NAME DATA_TYPE = CHARACTER START_BYTE = 391 BYTES = 56 FORMAT = "A56" DESCRIPTION = "The intended purpose of an observation or sequence of commands. See table 3.2.2.7.B in the IMP EDR CD-ROM SIS for a complete listing of the values." END_OBJECT = COLUMN OBJECT = COLUMN NAME = VECTOR_COMPONENT_X DATA_TYPE = ASCII_REAL START_BYTE = 449 BYTES = 6 FORMAT = "F6.3" DESCRIPTION = "The x component of a unit vector which defines the IMP pointing. The vector is defined with respect to one of two possible coordinate frames, indicated by the command name. If the command name is IMP_IMAGE_VECTOR, the coordinate system is the IMP camera frame (IMP Frmae); if the command name is IMP_IMAGE_LCLVEC, the coordinate system is the Martian Local Level Frame (M Frame). Valid range: -1.0 to 1.0." END_OBJECT = COLUMN OBJECT = COLUMN NAME = VECTOR_COMPONENT_Y DATA_TYPE = ASCII_REAL START_BYTE = 456 BYTES = 6 FORMAT = "F6.3" DESCRIPTION = "The y component of a unit vector which defines the IMP pointing. The vector is defined with respect to one of two possible coordinate frames, indicated by the command name. If the command name is IMP_IMAGE_VECTOR, the coordinate system is the IMP camera frame (IMP Frmae); if the command name is IMP_IMAGE_LCLVEC, the coordinate system is the Martian Local Level Frame (M Frame). Valid range: -1.0 to 1.0." END_OBJECT = COLUMN OBJECT = COLUMN NAME = VECTOR_COMPONENT_Z DATA_TYPE = ASCII_REAL START_BYTE = 463 BYTES = 6 FORMAT = "F6.3" DESCRIPTION = "The z component of a unit vector which defines the IMP pointing. The vector is defined with respect to one of two possible coordinate frames, indicated by the command name. If the command name is IMP_IMAGE_VECTOR, the coordinate system is the IMP camera frame (IMP Frmae); if the command name is IMP_IMAGE_LCLVEC, the coordinate system is the Martian Local Level Frame (M Frame). Valid range: -1.0 to 1.0." END_OBJECT = COLUMN END_OBJECT = TABLE END