29 September 2009 Hybrid space-airborne bistatic SAR geometric resolutions
Author Affiliations +
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.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Antonio Moccia, Antonio Moccia, Alfredo Renga, Alfredo Renga, } "Hybrid space-airborne bistatic SAR geometric resolutions", Proc. SPIE 7477, Image and Signal Processing for Remote Sensing XV, 74771Y (29 September 2009); doi: 10.1117/12.830930; https://doi.org/10.1117/12.830930


Multifrequency VSAR imaging of moving targets
Proceedings of SPIE (September 28 1999)
The feasibility of a multibeam delay/Doppler radar altimeter
Proceedings of SPIE (November 03 2010)
Space noise synthetic aperture radar
Proceedings of SPIE (April 25 2006)
Signal analysis of a forward-looking SAR system
Proceedings of SPIE (September 11 2003)
The concept of a multibeam delay/Doppler radar altimeter
Proceedings of SPIE (October 03 2011)

Back to Top