Abstract:

Missile-borne bistatic forward-looking synthetic aperture radar (MBFL-SAR) is a new and special imaging mode, which is the application of bistatic forwardlooking synthetic aperture radar to the missile platform. It could perform two-dimensional (2D) imaging and passive homing during the whole terminal diving period of the missile. This paper establishes the echo slant range model under high dynamic conditions according to the moving feature of MBFLSAR. And then motion parameters such as the Doppler frequency and the Doppler chirp rate are analyzed compared with the traditional bistatic platform with low velocities. Furthermore, error models of the slant range history, the Doppler frequency, the Doppler chirp rate and synchronization in the presence of motion errors are built. And restrictions of motion parameters and precision requirements of synchronization errors are developed based on the influence of errors on imaging performance of MBFL-SAR. Simulation results show the validity of the proposed error models.