PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 2048 FILE_RECORDS = 187488 ^FND_HDR_TABLE = ("4156155D.PRT",1) ^FND_TABLE = ("4156155D.PRT",2) MISSION_NAME = "MAGELLAN" INSTRUMENT_HOST_NAME = "MAGELLAN" TARGET_NAME = "VENUS" INSTRUMENT_NAME = "RADIO SCIENCE SUBSYSTEM" PRODUCT_TYPE = "FND" DATA_SET_ID = "MGN-V-RSS-4-BSR-V1.0" PRODUCT_ID = "4156155D.PRT" PRODUCT_RELEASE_DATE = 2008-08-31 DESCRIPTION = "This file contains double precision complex time samples, originally from an open loop receiver at a site like a NASA Deep Space Network station. The original integer samples have been converted to double precision complex format; amplitude and/or frequency filtering may have been applied. The header record for this file may provide brief history information. The remainder of the file contains time samples. The file is in the FND format adopted and used by G.L. Tyler's group at Stanford University (the Stanford University Element, or SUE)." DSN_STATION_NUMBER = 63 BAND_NAME = "S" RECEIVED_POLARIZATION_TYPE = "LEFT CIRCULAR" START_TIME = 1994-06-05T15:58:12.019 STOP_TIME = 1994-06-05T16:14:11.947 PRODUCT_CREATION_TIME = 2008-04-23T21:20:51 PRODUCER_ID = "SUE" OBJECT = FND_HDR_TABLE ROWS = 1 COLUMNS = 31 ROW_BYTES = 2048 INTERCHANGE_FORMAT = BINARY DESCRIPTION = "The FND header contains ancillary data for understanding the content of the FND table which follows. The first 272 bytes of the Header row contain information; the remainder of the row is padded with undefined bytes. The FND Header is stored in binary format." OBJECT = COLUMN NAME = "EXPERIMENT YEAR" COLUMN_NUMBER = 1 DATA_TYPE = MSB_INTEGER START_BYTE = 1 BYTES = 4 UNIT = "N/A" DESCRIPTION = "The 4-digit year in which the data were collected." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "EXPERIMENT MONTH" COLUMN_NUMBER = 2 DATA_TYPE = MSB_INTEGER START_BYTE = 5 BYTES = 4 UNIT = "N/A" DESCRIPTION = "The 2-digit month in which the data were collected." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "EXPERIMENT DAY" COLUMN_NUMBER = 3 DATA_TYPE = MSB_INTEGER START_BYTE = 9 BYTES = 4 UNIT = "N/A" DESCRIPTION = "The 2-digit day in which the data were collected." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "EXPERIMENT HOUR" COLUMN_NUMBER = 4 DATA_TYPE = MSB_INTEGER START_BYTE = 13 BYTES = 4 UNIT = "N/A" DESCRIPTION = "The 2-digit hour when the first data sample was taken. The time system will depend on the observatory; but it will typically be UTC." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "EXPERIMENT MINUTE" COLUMN_NUMBER = 5 DATA_TYPE = MSB_INTEGER START_BYTE = 17 BYTES = 4 UNIT = "N/A" DESCRIPTION = "The 2-digit minute when the first data sample was taken. The time system will depend on the observatory; but it will typically be UTC." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "EXPERIMENT SECOND" COLUMN_NUMBER = 6 DATA_TYPE = MSB_INTEGER START_BYTE = 21 BYTES = 4 UNIT = "N/A" DESCRIPTION = "The 2-digit second when the first data sample was taken. The time system will depend on the observatory; but it will typically be UTC. The first sample in this FND file will generally be later than the first sample collected because a few samples are lost in in the FND filtering process (see column 21 below)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "ORIGINAL FILE NAME" COLUMN_NUMBER = 7 DATA_TYPE = CHARACTER START_BYTE = 25 BYTES = 20 FORMAT = "A20" DESCRIPTION = "The name of a parent file; this will sometimes be the name of the original file from the open-loop receiver (suffix *.ODR or *.RSR). Left justified in the column." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "DSN STATION NUMBER" COLUMN_NUMBER = 8 DATA_TYPE = MSB_INTEGER START_BYTE = 45 BYTES = 4 UNIT = "N/A" DESCRIPTION = "The number of the DSN antenna used to collect the open-loop data. Values of 14, 43, and 63 mean that the receiving antenna was 70-m." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "BAND NAME" COLUMN_NUMBER = 9 DATA_TYPE = CHARACTER START_BYTE = 49 BYTES = 4 FORMAT = "A4" DESCRIPTION = "An abbreviation indicating the radio band used when collection the data. Left justified in the column. Valid entries include: S S-Band (13 cm wavelength) X X-Band (3.6 cm wavelength)" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "RECEIVED POLARIZATION TYPE" COLUMN_NUMBER = 10 DATA_TYPE = CHARACTER START_BYTE = 53 BYTES = 4 FORMAT = "A4" DESCRIPTION = "An abbreviation indicating the radio polarization of the receiving antenna and feed. Left justified in the column. Valid entries include: R right circular polarization L left circular polarization" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "TRANSMIT FREQUENCY" COLUMN_NUMBER = 11 DATA_TYPE = IEEE_REAL START_BYTE = 57 BYTES = 8 UNIT = "HERTZ" DESCRIPTION = "The frequency transmitted by the source of the radio signal sampled in this FND file. Set to 0 if not known." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "PROGRAM NAME" COLUMN_NUMBER = 12 DATA_TYPE = CHARACTER START_BYTE = 65 BYTES = 16 FORMAT = "A16" DESCRIPTION = "Name of the program which created this FND file." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "PROGRAM VERSION" COLUMN_NUMBER = 13 DATA_TYPE = CHARACTER START_BYTE = 81 BYTES = 16 FORMAT = "A16" DESCRIPTION = "Version of the program given in column 12." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "PROCESSING YEAR" COLUMN_NUMBER = 14 DATA_TYPE = MSB_INTEGER START_BYTE = 97 BYTES = 4 DESCRIPTION = "Year on which the program listed in column 12 was executed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "PROCESSING MONTH" COLUMN_NUMBER = 15 DATA_TYPE = MSB_INTEGER START_BYTE = 101 BYTES = 4 DESCRIPTION = "Month on which the program listed in column 12 was executed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "PROCESSING DAY" COLUMN_NUMBER = 16 DATA_TYPE = MSB_INTEGER START_BYTE = 105 BYTES = 4 DESCRIPTION = "Day on which the program listed in column 12 was executed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "PROCESSING HOUR" COLUMN_NUMBER = 17 DATA_TYPE = MSB_INTEGER START_BYTE = 109 BYTES = 4 DESCRIPTION = "Hour on which the program listed in column 12 was executed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "PROCESSING MINUTE" COLUMN_NUMBER = 18 DATA_TYPE = MSB_INTEGER START_BYTE = 113 BYTES = 4 DESCRIPTION = "Minute on which the program listed in column 12 was executed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "PROCESSING SECOND" COLUMN_NUMBER = 19 DATA_TYPE = MSB_INTEGER START_BYTE = 117 BYTES = 4 DESCRIPTION = "Second on which the program listed in column 12 was executed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "REFERENCE TIME" COLUMN_NUMBER = 20 DATA_TYPE = IEEE_REAL START_BYTE = 121 BYTES = 8 UNIT = "SECOND" DESCRIPTION = "Time in seconds since 0h, adopted as a reference when many files are processed together coherently." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "START TIME" COLUMN_NUMBER = 21 DATA_TYPE = IEEE_REAL START_BYTE = 129 BYTES = 8 UNIT = "SECOND" DESCRIPTION = "Time in seconds since 0h associated with the first sample in this FND file. This time will be slightly later than the time from columns 4-6 because FND processing causes a few samples at the beginning and end of the file to be lost." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "LAST TIME" COLUMN_NUMBER = 22 DATA_TYPE = IEEE_REAL START_BYTE = 137 BYTES = 8 UNIT = "SECOND" DESCRIPTION = "Time in seconds since 0h associated with the first sample in the last record of this FND file." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SAMPLE INTERVAL" COLUMN_NUMBER = 23 DATA_TYPE = IEEE_REAL START_BYTE = 145 BYTES = 8 UNIT = "SECOND" DESCRIPTION = "Spacing between consecutive complex samples in this FND file." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SCALING FACTOR" COLUMN_NUMBER = 24 DATA_TYPE = IEEE_REAL START_BYTE = 153 BYTES = 8 UNIT = "N/A" DESCRIPTION = "An amplitude scaling factor that should be applied to the sample values in this FND file. Often set to 1 (no scaling)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FIRST FND FREQUENCY" COLUMN_NUMBER = 25 DATA_TYPE = IEEE_REAL START_BYTE = 161 BYTES = 8 UNIT = "HERTZ" DESCRIPTION = "The lowest frequency retained in a previous digital filtering step. Without knowing original bandwidth and knowledge of other filtering operations, this may not be useful information." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "LAST FND FREQUENCY" COLUMN_NUMBER = 26 DATA_TYPE = IEEE_REAL START_BYTE = 169 BYTES = 8 UNIT = "HERTZ" DESCRIPTION = "The highest frequency retained in a previous digital filtering step. Without knowing original bandwidth and knowledge of other filtering operations, this may not be useful information." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "DECIMATION RATIO" COLUMN_NUMBER = 27 DATA_TYPE = MSB_INTEGER START_BYTE = 177 BYTES = 4 UNIT = "N/A" DESCRIPTION = "The ratio by which original bandwidth was reduced in a previous step of digital filtering. For example, if the original bandwidth was 100 kHz and the decimation ratio was 4, the new bandwidth would be 25 kHz and the sample interval would be 0.000040." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FIRST FND BIN" COLUMN_NUMBER = 28 DATA_TYPE = MSB_INTEGER START_BYTE = 181 BYTES = 4 UNIT = "N/A" DESCRIPTION = "The bin number corresponding to the first FND frequency (column 25) in a previous digital filtering operation." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "RECORD LENGTH" COLUMN_NUMBER = 29 DATA_TYPE = MSB_INTEGER START_BYTE = 185 BYTES = 4 UNIT = "BYTE" DESCRIPTION = "Length of each record in this FND file." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SAMPLE BITS" COLUMN_NUMBER = 30 DATA_TYPE = MSB_INTEGER START_BYTE = 189 BYTES = 4 UNIT = "BIT" DESCRIPTION = "Number of bits in each complex sample in this FND file. For example, if this value is 128, the I and Q components of the sample each have 64 bits and each is 'double precision.'" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "COMMENT" COLUMN_NUMBER = 31 DATA_TYPE = CHARACTER START_BYTE = 193 BYTES = 80 UNIT = "N/A" DESCRIPTION = "An operator comment from a previous processing step. Ordinarily a new comment will overwrite an old one; but old comments will propagate forward if the operator makes no change." END_OBJECT = COLUMN END_OBJECT = FND_HDR_TABLE OBJECT = FND_TABLE ROWS = 187487 COLUMNS = 1 ROW_BYTES = 2048 INTERCHANGE_FORMAT = BINARY DESCRIPTION = "The FND Table contains double precision complex time samples from an open-loop radio science receiver. In many cases digital filtering will have been applied to the original sample values before this file is created. The data are organized into a PDS TABLE object with a single COLUMN having 128 items." OBJECT = COLUMN NAME = "SAMPLES" COLUMN_NUMBER = 1 DATA_TYPE = IEEE_COMPLEX START_BYTE = 1 BYTES = 2048 ITEMS = 128 ITEM_BYTES = 16 ITEM_OFFSET = 16 DESCRIPTION = "Complex double precision samples." END_OBJECT = COLUMN END_OBJECT = FND_TABLE END