Non-Stop-and-Go Echo Model for Hypersonic-Vehicle-Borne Bistatic Forward-Looking Sar

Bistatic forward-looking synthetic aperture radar (BFSAR) is a promising technique for applications such as automatic navigation and landing in all weather conditions and in day and night. Conventional echo models are no longer valid for the BFSAR mounted on the emerging hypersonic vehicle (HSV) due to its high-speed large-acceleration motion characteristics. In this paper, by taking the nonlinear maneuvers of the HSV receiver during pulse propagation into account, a closed-form non-stop-and-go echo model named maneuvering-during-pulse-propagation echo model is proposed for HSV-BFSAR. The model errors are analysed theoretically. The simulation verifies the validity of the proposed model.