SAR/ISAR Imaing Using Commercial Millimeter-wave Radar

Millimeter-wave (mmWave) radar has drawn much attention for both academic research and industrial applications. Different types of single-chip mMwave radar system has been developed driving by the increasing demand of automotive radar applications. MmWave radar is also favored by imaging radar since high range and cross-range resolutions can be easily achieved. However, high-resolution imaging is not the primary task of automotive radar, although it can be easily achieved by applying synthetic aperture technique. In this paper, we present short-range synthetic aperture radar (SAR) imaging experiments using commercial single-chip mmWave radar. Both SAR and ISAR experiments are conducted and the results show that cross-range resolution can be improved to several centimeters by adopting SAR technique to single-chip mmWave radar. Therefore, commercial mMwave radar provides an effective and low-cost approach for evaluating SAR/ISAR working mode and testing the processing algorithm.