Integrated sidelobe energy reduction technique using optimal polyphase codes

For the distributed targets arising in most synthetic aperture radar (SAR) images, it is the integrated sidelobe: (ISL) energy rather than thr peak si delobe level (PSL) that governs the performance of the pulse compression pr ocessing. A sidelobe cancellation technique is suggested which reduces the ISL energy by eliminating a significant portion of the sidelobe pattern of the pulse compression output, while the PSL is presented at the optimal Bar ker-code level. The efficiency of this ISL reduction is proportional to the signal code length.