The ISAR range profile compensation of space target based on Chirplet transform

This paper investigates the speed compensation of range profile for space target inverse synthetic aperture radar (ISAR) imaging. By establishing an ISAR echo model, the impact of the fast-moving space target on the performance of range distance pulse compression has been analyzed and we find out that the fast-moving target will distort the range profile. To solve the distortion problem, a range profile compensation algorithm based on Chirplet transform has been proposed. The new algorithm can eliminate the influence of the speed on the range profile and improve the imaging quality. The orbit of the target are simulated by using STK software. Simulated imaging results are given at the end of the paper to verify the effectiveness and efficiency of the proposed algorithm.