System design of optronic processing for azimuth signal reconstruction in HRWS SAR based on filterbank framework

Abstract

With the high programmability of spatial light modulator (SLM), an optronic processor which is capable of processing synthetic aperture radar (SAR) raw data in real time is newly developed. Azimuth signal reconstruction is an essential problem with regarding to high-resolution wide-swath (HRWS) SAR, which is always time consuming. This paper proposes an optronic system for reconstructing azimuth signal of HRWS SAR. In the optronic system, the major computation is performed by optical devices, whereas electronic devices control the data. This system can be a promising solution to azimuth reconstruction of spaceborne HRWS SAR.