Bistatic SAR for Earth observation

Antonio Moccia

doi:10.1117/12.410642

21 December 2000 Bistatic SAR for Earth observation

Antonio Moccia

Proceedings Volume 4173, SAR Image Analysis, Modeling, and Techniques III; (2000) https://doi.org/10.1117/12.410642
Event: Europto Remote Sensing, 2000, Barcelona, Spain

Abstract

Bistatic radar is an active microwave sensor operating with separated transmitting and receiving antennae. This paper deals with a spacebome mission of a bistatic synthetic aperture radar based on a small satellite flying in formation with ENVISAT along parallel orbits, and equipped with a receiving only microwave system, which catches the ASAR echoes. The proposed system does not require any modification of existing ENVISAT design and operation; in fact it is assumed that ENVISAT is non-cooperative. After an introduction to the original scientific activities and applications achievable using bistatic data as further input thanks to the capability of a multi-angle observation, the paper presents numerical results of a simulation aimed at characterising some radiometric and geometric aspects of bistatic imagery. In particular, the effects of a frequency offset, caused by differences in local oscillators, and of variable bistatic geometry, caused by spacecraft separation along the orbit, are put in evidence.

Citation Download Citation

Antonio Moccia "Bistatic SAR for Earth observation", Proc. SPIE 4173, SAR Image Analysis, Modeling, and Techniques III, (21 December 2000); https://doi.org/10.1117/12.410642

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