Titre : | Along-track resolution enhancement for bistatic SAR imaging in burst-mode operation |
Auteurs : | Virginie Kubica, Auteur ; Xavier NEYT, Auteur ; Hugh d. Griffiths, Auteur |
Type de document : | Articles |
Année de publication : | 2016 |
Langues: | Anglais |
Catégories : |
6.60 Equipements et installations > Équipement scientifique > Instrument de mesure > Radar |
Tags : | bistatic radar ; matched filter ; maximum a posteriori ; opportunistic ; SAR focusing ; ScanSAR ; TOPSAR |
Résumé : |
Wide-swath SAR imaging modes such as ScanSAR or TOPSAR share the synthetic aperture length between beam positions. This leads to a degraded along-track resolution compared to the conventional Stripmap mode. We show that this degraded resolution can be enhanced in the case of a bistatic configuration by exploiting the sidelobe emissions of the elevation beams illuminating the adjacent sub-swaths. If the SNR of the backscattered signals is sufficient, the performance of the Stripmap mode can even be restored... This paper proposes a cross-range resolution-enhancement method which provides an enhanced cross-range resolution compared to the one obtained by the classical burst-mode SAR processing. This method is experimentally validated using measurements acquired in a space-ground bistatic configuration. |
Source du document : | IEEE Transactions on Aerospace and Electronic Systems, 2016, 52(4):1568-1575 |
En ligne : | http://www.sic.rma.ac.be/~vkubica/taes_kubicav.pdf |
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