Optimal acquisition mode and signal processing algorithm in syntetic aperture radar

Abstract

Different angular resolution of radar images can be achieved using various acquisition modes of synthetic aperture radar (SAR). Modern onboard phased arrays support operation in different polarization, with a number of antenna beams and can perform electronic scanning. Assuming illumination of the whole underlying surface under the aircraft the optimal SAR acquisition mode and spatio-temporal signal processing algorithm are developed and investigated. All well-known modes (StripMap, ScanSAR, SpotLight, Multi-look etc.) and algorithms can be derived from the optimal taking into account simplified problem statement. Synthesis is performed using modern theory of radio engineering systems statistical optimization.