Data Set Information
DATA_SET_NAME GOLDSTONE MARS RADIO TELESCOPE DERIVED ALTIMETRY V1.0
DATA_SET_ID GSSR-M-RTLS-5-ALT-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : The data set consists of Martian radii and elevations (relative to the 6 millibar reference surface) measured relative to JPL ephemeris DE_118. The data were obtained by the Goldstone Solar System Radar during the oppositions of 1971-1982. Present form of table generated by R. Mehlman, UCLA/IGPP. All fields are separated by commas. Processing Level Id : 5 Software Flag : N Processing Start Time : 1971 Processing Stop Time : 1983 Parameters : Data Set Parameter 'PLANETARY ELEVATION' ---------------------------------------- Height of location on a planet or satellite surface, relative to some datum, e.g. relative to sea level on Earth, or relative to 6.5 millibar atmospheric pressure height on Mars. Data Set Parameter Name : PLANETARY ELEVATION Data Set Parameter Unit : KILOMETER Sampling Parameter Name : PIXEL Sampling Parameter Unit : N/A Minimum Sampling Parameter : N/A Maximum Sampling Parameter : N/A Sampling Parameter Resolution : N/A Sampling Parameter Interval : N/A Minimum Available Sampling Int : N/A Noise Level : UNK Source Instrument Parameters : Instrument Host ID : GSSR Data Set Parameter Name : PLANETARY ELEVATION Instrument Parameter Name : RADAR ECHO POWER Important Instrument Parameters : 1 Measurement Information : Atmospheric Conditions ---------------------- NOT APPLICABLE Source ------ The transmitter was the 64 meter antenna at the Goldstone Deep Space Network station. Calibration Standard -------------------- NOT APPLICABLE Wavelength Calibration ---------------------- The transmitter frequency is calibrated with a hydrogen maser. Processing : N/A
DATA_SET_RELEASE_DATE 1990-06-15T00:00:00.000Z
START_TIME 1971-06-20T08:58:53.000Z
STOP_TIME 1982-03-26T08:08:36.000Z
MISSION_NAME PRE-MAGELLAN
MISSION_START_DATE 1968-11-09T12:00:00.000Z
MISSION_STOP_DATE 1988-07-27T12:00:00.000Z
TARGET_NAME MARS
TARGET_TYPE PLANET
INSTRUMENT_HOST_ID GSSR
INSTRUMENT_NAME RADIO TELESCOPE
INSTRUMENT_ID RTLS
INSTRUMENT_TYPE RADAR
NODE_NAME Geosciences
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE Overview : The elevation data in the set are subject to two types of error: (1) Errors in the measurements of the range to the planet. These range errors are less than 100 meters on the average. (2) Errors due to the differences between the assumed shape of the reference figure and the actual shape of the planet. This error will affect global topography but not local topography. The peak-to-peak magnitude of this error is estimated to be 1800 meters. See DOWNSETAL1975 for further details.
CITATION_DESCRIPTION Downs, G. S., GOLDSTONE MARS RADIO TELESCOPE DERIVED ALTIMETRY V1.0, GSSR-M-RTLS-5-ALT-V1.0, NASA Planetary Data System, 1990
ABSTRACT_TEXT This data set consists of Martian radii and elevations (relative to the 6 millibar reference surface) measured relative to JPL ephemeris DE_118. The data were obtained by the Goldstone Solar System Radar during the oppositions of 1971-1982. Present form of table generated by R. Mehlman, UCLA/IGPP.
PRODUCER_FULL_NAME GEORGE S. DOWNS
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