Research and implement of migration compensation in PD radar based on FPGA

Abstract

Migration Compensation can eliminate the influence of target movement during the long-time integration which can increase the detection probability of stealth aircraft in Pulse-Doppler (PD) Radar. Both frequency-domain correction and time-domain correction are common methods of migration compensation. In this paper, a digital signal processing platform which based on Field Programmable Gate Array (FPGA) is designed to implement the two ways of migration compensation. Also the details of implementation are described. At the end of the paper, the comparison of performance and resource consumption are presented. With the same sampling rate, the SNR gains of two methods are almost the same. However, frequency-domain correction consumes more internal calculation resource in FPGA while time-domain correction needs more external storage resource.