Preliminary results of a FMCW SAR with real-time processor

With the advantages of low cost, low weight, small size and high resolution, frequency modulated continuous wave synthetic aperture radar (FMCW SAR) has become the hotspot in radar field. This objective of this paper is to introduce a new FMCW SAR designed by the National University of Defense Technology (NUDT). The introduction contains the design and realization of micro-strip antenna, wideband signal generating, and the real-time imaging processor. After the detailed introduction, trial results with strip-map SAR mode and circular SAR are presented. The experimental results verified the good performance of the FMCW SAR.