Application of adaptive phase azimuth prefiltering method

Abstract:
To improve the performance of azimuth prefiltering in SAR (Synthetic Aperture Radar) imaging, an adaptive phase filtering method based on accurate imaging techniques is proposed. This method can accurately compensate for phase changes between pulses using the platform's internal navigation information, and it can effectively enhance the calculation performance of azimuth prefiltering. Based on this, the influence of SAR radar parameter errors on the accuracy of azimuth and phase prefiltering is analyzed for the first time. The theoretical boundary of its engineering application was explored, and the effectiveness of this method was finally verified by comparing simulation and measured data.