关键词：通信；通信网络；合成孔径雷达；无源雷达；雷达成像；OFDM
摘 要：This research develops collection and signal processing models to produce passive SAR ground images using OFDM communication networks. The OFDM- based WiMAX network is selected as a relevant example and is evaluated as a viable source for radar ground imaging. The monostatic and bistatic phase history models for OFDM are derived and validated with experimental single dimensional data. An airborne passive collection model is defined and signal processing approaches are proposed providing practical solutions to passive SAR imaging scenarios. Finally, experimental SAR images using general OFDM and WiMAX waveforms are shown to validate the overarching signal processing concept.