Prospects on the X-SAR interferometer of the SRL-3 topographic mapping mission

Francesco Caltagirone; Pasquale Capece; Giorgio Spada

doi:10.1117/12.262710

17 December 1996 Prospects on the X-SAR interferometer of the SRL-3 topographic mapping mission

Francesco Caltagirone, Pasquale Capece, Giorgio Spada

Proceedings Volume 2958, Microwave Sensing and Synthetic Aperture Radar; (1996) https://doi.org/10.1117/12.262710
Event: Satellite Remote Sensing III, 1996, Taormina, Italy

Abstract

The SIR-C/X-SAR SRL-3 topographic mapping mission was conceived by JPL to provide a global topographic mapping of the planet Earth and to acquire multi-frequency/multi- polarization SAR data over selected sites. The major benefits expected by this eleven-day shuttle mission, now officially called Shuttle Radar Topographic Mapper (SRTM), are to support many branches of the earth sciences providing an accurate knowledge of the surface elevation. To generate required data, SRTM will use a single-pass fixed baseline interferometer SAR system composed by the Shuttle Imaging Radar C and by the X-band SAR successfully flown twice in 1994, enhanced by two additional C-band and X-band receive- only antennae/receivers mounted on the tip of a 60 meters long retractable mast. The aspects related to the mission objectives and to design concepts of the interferometric channel of the X-SAR radar are dealt with in this paper. In particular the system configuration, the secondary azimuth beam steerable antenna, the front-end electronics and the on-orbit antennae misalignment's compensation are introduced. Finally the achievable performances are presented.

Citation Download Citation

Francesco Caltagirone, Pasquale Capece, and Giorgio Spada "Prospects on the X-SAR interferometer of the SRL-3 topographic mapping mission", Proc. SPIE 2958, Microwave Sensing and Synthetic Aperture Radar, (17 December 1996); https://doi.org/10.1117/12.262710

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KEYWORDS

Antennas

X band

Interferometers

Synthetic aperture radar

Radar

Interferometry

Electronics

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