无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2012年
9期
19-22
,共4页
调频连续波%合成孔径雷达%距离—多普勒成像算法
調頻連續波%閤成孔徑雷達%距離—多普勒成像算法
조빈련속파%합성공경뢰체%거리—다보륵성상산법
FMCW%SAR%Range-Doppler imaging algorithm
调频连续波合成孔径雷达(FMCW SAR)是一种新体制成像雷达,具有体积小、重量轻、分辨率高、功耗低和低截获等一系列优点。通过理论推导,详细介绍了FMCW SAR在不同成像条件下的去调频信号模型,并在此模型的基础上推导分析了距离—多普勒(Range-Doppler,RD)成像算法的流程,给出了精确成像所需的方位向匹配滤波器。通过仿真对算法的正确性和可行性进行了验证。
調頻連續波閤成孔徑雷達(FMCW SAR)是一種新體製成像雷達,具有體積小、重量輕、分辨率高、功耗低和低截穫等一繫列優點。通過理論推導,詳細介紹瞭FMCW SAR在不同成像條件下的去調頻信號模型,併在此模型的基礎上推導分析瞭距離—多普勒(Range-Doppler,RD)成像算法的流程,給齣瞭精確成像所需的方位嚮匹配濾波器。通過倣真對算法的正確性和可行性進行瞭驗證。
조빈련속파합성공경뢰체(FMCW SAR)시일충신체제성상뢰체,구유체적소、중량경、분변솔고、공모저화저절획등일계렬우점。통과이론추도,상세개소료FMCW SAR재불동성상조건하적거조빈신호모형,병재차모형적기출상추도분석료거리—다보륵(Range-Doppler,RD)성상산법적류정,급출료정학성상소수적방위향필배려파기。통과방진대산법적정학성화가행성진행료험증。
Frequency-modulated continuous-wave (FMCW) synthetic aperture radar (SAR) is a new imaging radar system,with the advantages such as small size,light weight,high resolution,low power,low probability of intercept, etc. In this paper, the de-chirped FMCW SAR signal model in different imaging conditions is introduced in detail. Then the Range-Doppler (RD) imaging algorithm is presented based on the model, and the azimuth match filter for precise imaging is analyzed. Finally, the correctness and the feasibility of the imaging algorithm are proved by simulation.