Data Set Information
DATA_SET_NAME ARCB/GSSR M RADIO TELESC DERIVED RADAR MODEL UNIT MAP V1.0
DATA_SET_ID ARCB/GSSR-M-RTLS-5-MODEL-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : A model for Mars depolarized radar echo power that (1) matches the observed variation of total radar cross section with longitude and (2) produces model spectra that have the broad features of spectra published for Goldstone Solar System Radar and for Arecibo Observatory 1980 to 1982 observations. This model assumes that different geologic units on Mars backscatter in a uniformly bright manner, where radar echo power is A * Cosine (angle of incidence), where A varies across the planet. This model assigns depolarized radar echo power on a degree-by-degree basis in latitude and longitude. Processing Level Id : 5 Software Flag : N Processing Start Time : 1980 Processing Stop Time : 1990 Parameters : Data Set Parameter 'RADAR MODEL ECHO POWER' ------------------------------------------- Echo power predicted according to a scattering model. Data Set Parameter Name : RADAR MODEL ECHO POWER Data Set Parameter Unit : DIMENSIONLESS 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 : N/A Source Instrument Parameters : Instrument Host ID : ARCB Data Set Parameter Name : RADAR MODEL ECHO POWER Instrument Parameter Name : RADAR ECHO POWER Important Instrument Parameters : 1 Instrument Host ID : GSSR Data Set Parameter Name : RADAR MODEL ECHO POWER Instrument Parameter Name : RADAR ECHO POWER Important Instrument Parameters : 1 Measurement Information : Atmospheric Conditions ---------------------- NOT APPLICABLE Source ------ The observations used the 300 meter reflector at Arecibo for transmission. Calibration Standard -------------------- NOT APPLICABLE Wavelength Calibration ---------------------- Transmitter frequency calibrated with a hydrogen maser. Processing : N/A
DATA_SET_RELEASE_DATE 1990-06-15T00:00:00.000Z
START_TIME 1980-01-01T12:00:00.000Z
STOP_TIME 1986-01-01T12:00:00.000Z
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 ARCB
GSSR
INSTRUMENT_NAME RADIO TELESCOPE
INSTRUMENT_ID RTLS
INSTRUMENT_TYPE RADAR
NODE_NAME Geosciences
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE Overview : Model assumes uniformly bright scattering for all model units. Fits to observations were by trial-and-error; thus, the model is not unique. A real resolution accurate to +/- 20%; amplitude resolution is accurate to +/- 20%.
CITATION_DESCRIPTION Thompson, T.W., ARCB/GSSR M RADIO TELESC DERIVED RADAR MODEL UNIT MAP V1.0, ARCB/GSSR-M-RTLS-5-MODEL-V1.0, NASA Planetary Data System, 1990
ABSTRACT_TEXT A model for Mars depolarized radar echo power that (1) matches the observed variation of total radar cross section with longitude and (2) produces model spectra that have the broad features of spectra published for Goldstone Solar System Radar and for Arecibo Observatory 1980 to 1982 observations. This model assumes that different geologic units on Mars backscatter in a uniformly bright manner, where radar echo power is A * Cosine (angle of incidence), where A varies across the planet. This model assigns depolarized radar echo power on a degree-by-degree basis in latitude and longitude.
PRODUCER_FULL_NAME THOMAS W. THOMPSON
SEARCH/ACCESS DATA
  • Geosciences Web Services
  • Geosciences FTP Resource
    		•