Cassini Titan Radar Mapper
Article Abstract:
The Cassini Titan Radar Mapper multimode radar instrument will be included in the Cassini spacecraft to be launched in 1995 to study Saturn and its moons. The radar mapper was designed to provide surface imaging at moderate resolution with a wide swath as well as surface imaging at high resolution with a moderate swath; it was also designed to support topographic mapping by altimetry and scatterometry with very high sensitivity to study areas of extremely low backscatter. The system's operating frequency is 13.8 GHz to allow high-resolution altimetry with the available antenna; it should allow imaging on both sides of the track to provide maximum coverage. The system's high-resolution imaging will use the multibeam synthetic aperture radar (SAR) mode during the closest part of the flyby; multibeam SAR will be used during the inbound and outbound legs by its medium-resolution imaging.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1991
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The SIR-C/X-SAR Synthetic Aperture Radar system
Article Abstract:
The Spaceborne Imaging Radar-C (SIR-C) is part of a series of spaceborne imaging radar missions that began with the Seasat Synthetic Aperture Radar (SAR) in 1978. X-Band SAR (X-SAR) is an X-band imaging radar designed to complement SIR-C. SIR-C/X-SAR will let users select multiple wavelengths and the polarization of observation from Earth orbit for the first time. A received wave can be decomposed into two orthogonally polarized components, and the transmission polarization diversity supplied allows the complete scattering matrix to be measured. The SIR-C/X-SAR sensor system is intended to be the basis for future Earth Orbiting System (EOS) SAR; it requires global coverage over a few days at reduced resolution and the ability to obtain polarimetry from Earth orbit. The SCANSAR mode of operation required for such measurements is described.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1991
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