Wideband radar system distortion compensation using spherical satellite echo

With the increase of radar system bandwidth, the radar components generally have non-linear phase frequency and non-flat amplitude frequency characteristic. The non-ideal frequency response, if not compensated, will lead to the distortion of high resolution range profile. In this paper, the frequency domain compensation method is proposed using the echo of spherical satellite in high-speed motion. The high-speed movement and great noise effectively adds extra errors to spherical satellite echo. Hence, the high-speed movement effect is analyzed and compensated firstly, and then the compensated echo is de-noised by inverse matched filtering. The amplitude and phase distortion characteristics are measured by the de-noised echo. Any target echoes collected by the radar are compensated conveniently using the proposed method. Real data results demonstrate the validity of the presented algorithm.