PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 472 FILE_RECORDS = 8370 ^TABLE = "M9920002.B" DATA_SET_ID = "LP-L-ENG/GRS/NS/APS/MAG/ER-1-MDR-V1.0" SPACECRAFT_NAME = "LUNAR PROSPECTOR" INSTRUMENT_ID = {GRS, NS, APS, MAG, ER} PRODUCT_ID = "99_200_0202_0641.MERGE" MISSION_PHASE_NAME = "EXTENDED MISSION" TARGET_NAME = MOON START_TIME = 1999-07-19T02:02 STOP_TIME = 1999-07-19T06:41 SPACECRAFT_CLOCK_START_COUNT = 7325806 SPACECRAFT_CLOCK_STOP_COUNT = 7334191 EARTH_RECEIVED_START_TIME = 1999-07-19T02:02:28.338 EARTH_RECEIVED_STOP_TIME = 1999-07-19T06:41:58.424 OBJECT = TABLE INTERCHANGE_FORMAT = BINARY ROWS = 8370 ROW_BYTES = 472 COLUMNS = 12 DESCRIPTION = "Merged binary telemetry file. Each record is a main (minor) frame with 16 minor frames making a major frame. Only one of two downlink streams are included. Selection is based on stream availability and signal-to-noise ratios." OBJECT = COLUMN NAME = SYNC_CODE DATA_TYPE = MSB_INTEGER START_BYTE = 1 BYTES = 4 DESCRIPTION = "Fixed code with hex value of 1ACFFC1D." END_OBJECT = COLUMN OBJECT = COLUMN NAME = VCDU_HEADER DATA_TYPE = BIT_STRING START_BYTE = 5 BYTES = 2 DESCRIPTION = "CCSDS compatible telemetry frame header containing version id, spacecraft id, telemetry rate indicator, and VCDU counter." OBJECT = BIT_COLUMN NAME = VERSION_ID BIT_DATA_TYPE = MSB_BIT_STRING START_BIT = 1 BITS = 2 DESCRIPTION = "Fixed value of 01 (binary). It is a CCSDS field that is not used." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = SPACECRAFT_ID BIT_DATA_TYPE = MSB_BIT_STRING START_BIT = 3 BITS = 8 DESCRIPTION = "Fixed value field that identifies the spacecraft. Value is 10011011 (binary)." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = TELEMETRY_RATE_CODE BIT_DATA_TYPE = MSB_BIT_STRING START_BIT = 11 BITS = 6 DESCRIPTION = "Code that indicates the telemetry rate. Value of 000101 (binary) means 3600 bps." END_OBJECT = BIT_COLUMN END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPACECRAFT_CLOCK_COUNT DATA_TYPE = MSB_BIT_STRING START_BYTE = 7 BYTES = 3 DESCRIPTION = "Lunar Prospector spacecraft clock count is known as the VCDU counter. counter indicates the main frame count associated with the current data. It increments every 2 seconds for 3600 bps science data." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPARE_1 DATA_TYPE = INTEGER START_BYTE = 10 BYTES = 1 DESCRIPTION = "Spare bits with fixed value of 00000000." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ENGINEERING_PACKET DATA_TYPE = BIT_STRING START_BYTE = 11 BYTES = 44 DESCRIPTION = "Engineering data packet for a main frame. Its format is described in the Level 0 data product SIS." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPECTROMETER_PACKET DATA_TYPE = BIT_STRING START_BYTE = 55 BYTES = 232 DESCRIPTION = "Spectrometer data packet for a main frame. Its format is described in the Level 0 data product SIS." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MAG_ER_PACKET DATA_TYPE = BIT_STRING START_BYTE = 287 BYTES = 168 DESCRIPTION = "Magnetometer and electron reflectometer data packet for a main frame. Its format is described in the Level 0 data product SIS." END_OBJECT = COLUMN OBJECT = COLUMN NAME = TAILBYTES DATA_TYPE = BIT_STRING START_BYTE = 455 BYTES = 2 DESCRIPTION = "Data field that is changeable by command to look at different spacecraft telemetry monitors. Allows ground controllers to get a higher update rate for certain telemetry items." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EARTH_RECEIVED_TIME DATA_TYPE = BIT_STRING START_BYTE = 457 BYTES = 6 DESCRIPTION = "Earth received time of the first bit in the frame (i.e., first bit of sync code). Time is in UTC as recorded at ground station. Format is: two bytes are day of year, four bytes are millisecond of day." END_OBJECT = COLUMN OBJECT = COLUMN NAME = AUTOMATIC_GAIN_CONTROL DATA_TYPE = IEEE_REAL START_BYTE = 463 BYTES = 4 DESCRIPTION = "Downlink received signal level." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SIGNAL_QUALITY_INDICATOR DATA_TYPE = IEEE_REAL START_BYTE = 467 BYTES = 4 DESCRIPTION = "Downlink signal-to-noise ratio." END_OBJECT = COLUMN OBJECT = COLUMN NAME = STATUS_FLAGS DATA_TYPE = BIT_STRING START_BYTE = 471 BYTES = 2 DESCRIPTION = "Series of three flags that document which downlink data stream is stored in a record." OBJECT = BIT_COLUMN NAME = SPARE_2 BIT_DATA_TYPE = MSB_BIT_STRING START_BIT = 1 BITS = 10 DESCRIPTION = "Spare bits with fixed value of 0000000000." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = FIRST_STATUS_FLAG BIT_DATA_TYPE = MSB_BIT_STRING START_BIT = 11 BITS = 2 DESCRIPTION = "Flag that indicates the number of downlink telemetry streams records. Value of 01 (binary) indicates only one stream was recorded and a value of 10 (binary) indicates two streams were recorded." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = SECOND_STATUS_FLAG BIT_DATA_TYPE = MSB_BIT_STRING START_BIT = 13 BITS = 2 DESCRIPTION = "Flag that indicates the results of comparing two downlink data streams. Value of 01 (binary) indicates the two data streams matched, and a value of 10 (binary) indicates the data streams did not match." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = THIRD_STATUS_FLAG BIT_DATA_TYPE = MSB_BIT_STRING START_BIT = 15 BITS = 2 DESCRIPTION = "Flag that indicates which downlink data stream is stored in this frame. Value of 01 (binary) indicates the real-time data stream was selected, and a value of 10 (binary) indicates the delayed data stream was selected." END_OBJECT = BIT_COLUMN END_OBJECT = COLUMN END_OBJECT = TABLE END