CAJ | 학술논문

合成孔径雷达( SAR)系统要求时间严格同步，从而可利用脉冲间的相干性进行方位处理。推导了重频抖动造成的时间同步误差对SAR成像方位聚焦的影响以及其极限值，并给出了补偿方法。采用实际系统参数进行了仿真验证，并分析了存在重频抖动误差的实际SAR成像雷达系统，实测数据处理和补偿结果验证了理论的有效性。所提方法对实际雷达系统的设计、问题分析和SAR成像处理误差补偿有指导意义，具有较高的实用价值。
합성공경뢰체( SAR)계통요구시간엄격동보，종이가이용맥충간적상간성진행방위처리。추도료중빈두동조성적시간동보오차대SAR성상방위취초적영향이급기겁한치，병급출료보상방법。채용실제계통삼수진행료방진험증，병분석료존재중빈두동오차적실제SAR성상뢰체계통，실측수거처리화보상결과험증료이론적유효성。소제방법대실제뢰체계통적설계、문제분석화SAR성상처리오차보상유지도의의，구유교고적실용개치。
Synthetic aperture radar( SAR) is a strict synchronization system which gets the azimuth gain by the coherence of pulses. This paper analyzes the effect of the time synchronization error by SAR radar sys-tem pulse repetition frequency( PRF) jitter and its limit and proposes an error compensation algorithm. The simulation and experimental results show the efficiency of the method. The simulation results, processing and error compensation results of experimental data are provided to prove the effectiveness and practicabili-ty of the proposed algorithm. The method is useful for system design,problem diagnosis and error compensa-tion of practical SAR systems.