The Range Doppler Algorithm for Synthetic Aperture Radar moving on a Ballistic Trajectory

In this paper, the Range Doppler algorithm (RDA) for synthetic aperture radar moving on a ballistic trajectory is presented. The 3-dimensional acceleration and non-uniform trajectory cause decreases in efficiency of conventional imaging algorithms. Therefore RDA provided must be consistent with the acceleration and velocity parameters. Based on 2 dimensional frequency domain expression and ballistic trajectory, the Range Doppler algorithm is presented. To evaluateion the proposed algorithm for the single-point target, SAR image is simulated based on ballistic trajectory simulated and quality parameters of simulation results are computed. For To investigated the capability of the proposed algorithm for extensive targets, SAR image is extracted by consideration of 5 point targets and 17 point targets extracted. The simulation results show the validity of the proposed algorithm in extracting rada images not withstanding 3-dimensional acceleration and ballistic trajectory.