CAJ | 학술논문

通过对合成孔径雷达回波信号的分析，利用压缩感知理论基于信号稀疏性或可压缩性的基本原理，提出了方位稀疏表示的一种新方法，在此基础上给出了基于压缩感知的 SAR 回波信号处理方法和二维成像算法，实现了压缩感知对信号的全新采集和编解码，以较少的数据量实现成像，有效地抑制旁瓣，在一定程度上提高了成像中目标的分辨率，为有效降低高分辨合成孔径雷达的数据率提供了一种有效途径。通过对仿真数据和实测数据的处理验证了所提方法的可行性和有效性。
통과대합성공경뢰체회파신호적분석，이용압축감지이론기우신호희소성혹가압축성적기본원리，제출료방위희소표시적일충신방법，재차기출상급출료기우압축감지적 SAR 회파신호처리방법화이유성상산법，실현료압축감지대신호적전신채집화편해마，이교소적수거량실현성상，유효지억제방판，재일정정도상제고료성상중목표적분변솔，위유효강저고분변합성공경뢰체적수거솔제공료일충유효도경。통과대방진수거화실측수거적처리험증료소제방법적가행성화유효성。
By the use of the principle of compressed sensing (CS)theory which is based on the sparsity or compressibility of signals,a new sparse representation for azimuth is proposed through the analysis of syn-thetic aperture radar echo signal.On this basis,a SAR echo signal processing method is obtained and a 2D SAR imaging algorithm which achieve a fire??new data collection and coding of signal is established.The use of this algorithm not only suppresses the side lobe effectively but also enhances the resolution of imaging target to a certain extent,and simultaneously needs less amounts of data for imaging,which provides an efficient path of decreasing the data rate of high resolution synthetic aperture radar.The feasibility and va-lidity of the method proposed in this paper are tested through processing both simulated data and real radar data.