摘要
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。
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.
出处
《无线电工程》
2012年第9期19-22,共4页
Radio Engineering
