SAR Cross-Ambiguities in SAOCOM-CS Large Baseline Bistatic Configuration

Abstract

The evaluation of the ambiguous signal level, the Ambiguity-to-Signal Ratio (ASR), plays a key role in the Synthetic Aperture Radar (SAR) design and performance prediction. In conventional SAR acquisition scenarios, the computation of the ASR is based on the evaluation of the range and azimuth ambiguous contributes. Though appealing for its simplicity, this approach could be inaccurate in case of complex SAR acquisition geometries. In this paper we focus on the ASR performance of the SAOCOM-CS system in large baseline bistatic (LBB) configuration, extending a previous performance analysis by investigating the effect of cross-ambiguities on the achievable ASR performance.