Magellan (ARCDRs)

Originator

	Planetary Data System
	NASA/Jet Propulsion Laboratory
	Mail Stop 202-101
	4800 Oak Grove Drive
	Pasadena, CA  91109
        (818) 354-4321
        pds_operator@jpl.nasa.gov

NSSDC ID

 
        PSPG-00242

Software

Note

Information

ARCDRS

This data set contains data along track estimates of elevation, Fresnel reflectivity, surface roughness, brightness temperature, and emissivity derived from Magellan altimeter and radiometer data.

Elevation is derived by fitting the altimeter echo from the fan beam antenna as a function of time to Hagfors' radar backscatter model templates. Elevation, surface Fresnel reflectivity, and surface RMS slopes are extracted simultaneously. Brightness temperature and emissivity are derived from the HGA antenna in its side-looking mode. Radar backscatter images from the HGA are used to correct Fresnel reflectivity measurements for the extent of diffuse as opposed to quasi- specular scatter.

For more information refer to Software Interface Specification Document (Peter G. Ford, 1989, Altimetry and Radiometry Composite Data Record, MIT-MGN-ARCDR SIS Version 2.2, 40 p.) that is included on ARCDR CD-ROMs. Times are in Temps Dynamique Baricentrique (TDB) units.

Related Documents

1. Magellan Fact Sheet (B40119-000A).
2. The documentation for how to run the ARCDRLIST program (B40288- 000A).
3. Software Interface Specification (SIS) document for the Magellan altimetric and radiometric composite data records (B40289-000A).
4. Explanation of the structure of the ARCDR CD-ROMs (B40290-000A).