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Proceedings Paper

Hybrid space-airborne bistatic SAR geometric resolutions
Author(s): Antonio Moccia; Alfredo Renga
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Paper Abstract

Performance analysis of Bistatic Synthetic Aperture Radar (SAR) characterized by arbitrary geometric configurations is usually complex and time-consuming since system impulse response has to be evaluated by bistatic SAR processing. This approach does not allow derivation of general equations regulating the behaviour of image resolutions with varying the observation geometry. It is well known that for an arbitrary configuration of bistatic SAR there are not perpendicular range and azimuth directions, but the capability to produce an image is not prevented as it depends only on the possibility to generate image pixels from time delay and Doppler measurements. However, even if separately range and Doppler resolutions are good, bistatic SAR geometries can exist in which imaging capabilities are very poor when range and Doppler directions become locally parallel. The present paper aims to derive analytical tools for calculating the geometric resolutions of arbitrary configuration of bistatic SAR. The method has been applied to a hybrid bistatic Synthetic Aperture Radar formed by a spaceborne illuminator and a receiving-only airborne forward-looking Synthetic Aperture Radar (F-SAR). It can take advantage of the spaceborne illuminator to dodge the limitations of monostatic FSAR. Basic modeling and best illumination conditions have been detailed in the paper.

Paper Details

Date Published: 29 September 2009
PDF: 15 pages
Proc. SPIE 7477, Image and Signal Processing for Remote Sensing XV, 74771Y (29 September 2009); doi: 10.1117/12.830930
Show Author Affiliations
Antonio Moccia, Univ. degli Studi di Napoli Federico II (Italy)
Alfredo Renga, Univ. degli Studi di Napoli Federico II (Italy)

Published in SPIE Proceedings Vol. 7477:
Image and Signal Processing for Remote Sensing XV
Lorenzo Bruzzone; Claudia Notarnicola; Francesco Posa, Editor(s)

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