调频连续波(FMCW)合成孔径雷达(SAR)是一种新近被提出来的成像雷达体制,它具有体积小、重量轻、成本低、分辨率高等一系列优点,将在国民经济和国防建设中发挥越来越大的作用。简要介绍了FMCW SAR的主要优势,指出FMCW SAR的发展历程,并对FMCW SAR技术的发展趋势进行了归纳分析,指出对该领域必须予以重视的问题。 Frequency Modulated Continuous Wave (FMCW) Synthetic Aperture Radar (SAR) is a newly proposed imaging radar system. It has the advantages of small size, light weight, low cost and high resolution. It will be used in national economy and national defense Play an increasingly bigger role. The main advantages of FMCW SAR are briefly introduced, the development history of FMCW SAR is pointed out, and the development trend of FMCW SAR technology is summarized. The problems that must be paid attention to in this field are pointed out.