CCSD3ZF0000100000001NJPL3IF0PDSX00000001 PDS_VERSION_ID = PDS3 OBJECT = COLUMN NAME = SFDU_AGGREGATE_HEADER START_BYTE = 1 DATA_TYPE = CHARACTER BYTES = 20 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_SFDU USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "'NJPL1I0000240000nnnn', the number '0024' is registered with the NJPL SFDU authority as the 'G-Matrix Data Record'. 'nnnn' is the length in bytes of the remainder of the SFDU, which varies from record to record." END_OBJECT = COLUMN OBJECT = COLUMN NAME = G_MATRIX_ID_NUMBER START_BYTE = 21 DATA_TYPE = MSB_INTEGER BYTES = 2 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_GNUM USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The identifier for the G-matrix. G-matrices are indexed from 0." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ORBIT_NUMBER START_BYTE = 23 DATA_TYPE = MSB_INTEGER BYTES = 2 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_ORB USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The orbit number for which the G-matrix was computed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = BURST_NUMBER_WITHIN_ORBIT START_BYTE = 25 DATA_TYPE = MSB_UNSIGNED_INTEGER BYTES = 4 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_BURST USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The burst number within orbit ORBIT_NUMBER for which the G-matrix was computed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPARE START_BYTE = 29 BYTES = 4 END_OBJECT = COLUMN OBJECT = COLUMN NAME = BURST_TIME START_BYTE = 33 DATA_TYPE = IEEE_REAL BYTES = 8 UNIT = 'SECONDS' OBJECT = ALIAS ALIAS_NAME = GR_SCET USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The time at which burst BURST_NUMBER_WITHIN_ORBIT was transmitted (seconds past J2000)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NADIR_LATITUDE START_BYTE = 41 DATA_TYPE = IEEE_REAL BYTES = 4 UNIT = 'DEGREES' OBJECT = ALIAS ALIAS_NAME = GR_LAT USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The latitude at the nadir point for the G-matrix calculation." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NADIR_LONGITUDE START_BYTE = 45 DATA_TYPE = IEEE_REAL BYTES = 4 UNIT = 'DEGREES' OBJECT = ALIAS ALIAS_NAME = GR_LON USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The longitude at the nadir for the G-matrix calculation." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPACECRAFT_POSITION START_BYTE = 49 DATA_TYPE = IEEE_REAL BYTES = 8 ITEMS = 3 UNIT = 'KM' OBJECT = ALIAS ALIAS_NAME = GR_SCPOS USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The spacecraft position at BURST_TIME, relative to the Venus center of mass, expressed in inertial coordinates." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPACECRAFT_VELOCITY START_BYTE = 73 DATA_TYPE = IEEE_REAL BYTES = 8 ITEMS = 3 UNIT = 'KM/SECOND' OBJECT = ALIAS ALIAS_NAME = GR_SCVEL USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The spacecraft velocity at BURST_TIME, relative to the Venus center of mass, expressed in inertial coordinates." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ALTIMETER_POINTING_VECTOR START_BYTE = 97 DATA_TYPE = IEEE_REAL BYTES = 8 ITEMS = 3 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_ALTA USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The unit vector along the axis of the altimetry antenna at BURST_TIME, expressed in inertial coordinates." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SAR_POINTING_VECTOR START_BYTE = 121 DATA_TYPE = IEEE_REAL BYTES = 8 ITEMS = 3 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_SARA USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The unit vector along the axis of the high-gain (SAR) antenna at BURST_TIME, expressed in inertial coordinates." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NUMBER_OF_ANGLES START_BYTE = 145 DATA_TYPE = MSB_INTEGER BYTES = 2 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_BLEN USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The number of angles in the calculated G-matrix." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NUMBER_OF_RANGES START_BYTE = 147 DATA_TYPE = MSB_INTEGER BYTES = 2 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_RLEN USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The number of ranges in the calculated G-matrix." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NUMBER_OF_FREQUENCIES START_BYTE = 149 DATA_TYPE = MSB_INTEGER BYTES = 2 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_FLEN USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The number of frequencies in the calculated G-matrix (an odd number)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = HIGHEST_RANGE_ALIASING_INCLUDED START_BYTE = 151 DATA_TYPE = MSB_INTEGER BYTES = 2 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_RALIAS USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The highest order of range aliasing included in the computation of the G-matrix. If 0, no aliasing was considered; if 1, the contribution due to the first range ambiguity, etc." END_OBJECT = COLUMN OBJECT = COLUMN NAME = HIGHEST_FREQ_ALIASING_INCLUDED START_BYTE = 153 DATA_TYPE = MSB_INTEGER BYTES = 2 UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_FALIAS USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The highest order of frequency aliasing included in the computation of the G-matrix. If 0, no aliasing was considered; if 1, the contributions due to the first positive and negative frequency aliasing, etc." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPARE START_BYTE = 155 BYTES = 18 END_OBJECT = COLUMN OBJECT = COLUMN NAME = ANGLE_VECTOR START_BYTE = 173 DATA_TYPE = IEEE_REAL BYTES = 4 ITEMS = 'UNK' UNIT = 'RADIANS' OBJECT = ALIAS ALIAS_NAME = GR_B USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The vector of nb = NUMBER_OF_ANGLES angles for which the G-matrix was calculated (radians). Entries in ANGLE_VECTOR are monotonically increasing from an initial 0 radians, which is implicit and not included in the vector. Entries ANGLE_VECTOR[n] and ANGLE_VECTOR[n+1] thus bound the nth angle interval, which has nominal value (ANGLE_VECTOR[n] + ANGLE_VECTOR[n+1])/2." END_OBJECT = COLUMN OBJECT = COLUMN NAME = RANGE_VECTOR START_BYTE = 'UNK' DATA_TYPE = IEEE_REAL BYTES = 4 ITEMS = 'UNK' UNIT = 'SECONDS' OBJECT = ALIAS ALIAS_NAME = GR_R USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The vector of nr = NUMBER_OF_RANGES ranges for which the G-matrix was calculated (seconds). Entries in RANGE_VECTOR are monotonically increasing from an initial 0 seconds, which is implicit and not included in the vector. Entries RANGE_VECTOR[n] and RANGE_VECTOR[n+1] thus bound the nth range interval, which has nominal value (RANGE_VECTOR[n] + RANGE_VECTOR[n+1])/2." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FREQUENCY_VECTOR START_BYTE = 'UNK' DATA_TYPE = IEEE_REAL BYTES = 4 ITEMS = 'UNK' UNIT = 'HZ' OBJECT = ALIAS ALIAS_NAME = GR_F USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The vector of nf = NUMBER_OF_FREQUENCIES frequencies for which the G-matrix was calculated (Hz). Entries in FREQUENCY_VECTOR are monotonically increasing and denote frequencies at the centers of nominal frequency bins. FREQUENCY_VECTOR has an odd number of elements; the center element is zero and the remainder are symmetric (positive and negative frequencies) about this center value." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ANGLE_RANGE_G_MATRIX START_BYTE = 'UNK' DATA_TYPE = IEEE_REAL BYTES = 4 ITEMS = 'UNK' UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_GBR USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The (aliased) G-matrix in angle-range space, with NUMBER_OF_RANGES rows and NUMBER_OF_ANGLES columns, stored in row-major order for a total of nrb = NUMBER_OF_RANGES * NUMBER_OF_ANGLES entries. The first row is associated with the first element in RANGE_VECTOR, and each element in a row is associated with the corresponding element in ANGLE_VECTOR." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ANGLE_DOPPLER_G_MATRIX START_BYTE = 'UNK' DATA_TYPE = IEEE_REAL BYTES = 4 ITEMS = 'UNK' UNIT = 'N/A' OBJECT = ALIAS ALIAS_NAME = GR_GBF USAGE_NOTE = 'MAGELLAN STANFORD SCVDR SIS' END_OBJECT = ALIAS DESCRIPTION = "The (aliased) G-matrix in angle-frequency space, with NUMBER_OF_FREQUENCIES rows and NUMBER_OF_ANGLES columns, stored in row-major order for a total of nfb = NUMBER_OF_FREQUENCIES * NUMBER_OF_ANGELES entries. The first row is associated with the first element in FREQUENCY_VECTOR, and each element in a row is associated with the corresponding element in ANGLE_VECTOR." END_OBJECT = COLUMN END