To reduce the loss of sampling, higher sampling frequency than bandwidth of chirp must be adopted for the modulated frequency stepped pulse (MFSP) radar signal which will bring on over-sampling result of pulse compression for chirp. So the pick-up algorithm for MFSP radar signal must be adopted to eliminate target's redundancy in order to obtain fine HRRP (high-resolution range profile). However; because of the inaccuracy of the velocity compensation method, the velocity error of the moving target will produce velocity-range coupling error, even making the HRRP not be obtained. This paper proposes a HRRP pick-up algorithm based on the offset of the most powerful scatterer, which could solve the velocity-range coupling error effectively by modifying pick-up ranges of all sampled points. The simulation results prove tie validation of the theoretical analysis.

http://ieeexplore.ieee.org/iel5/9834/30995/01442207.pdf

Su Hong-yan

Papers

Moving target imaging for the modulated frequency stepped pulse radar signal