An Adaptive Algorithm of Plot Processing in Step-Variant Scanning for GMTI Radar

When airborne radar is detecting the ground, how to reduce false alarm and improve detection accuracy becomes extremely important. The data analysis shows that no matter what radar signal processing method is used, there is still a lot of residual plots remained. Plot processing is a key step to solve this problem. Due to the strong ground clutter and multiple task types, the new algorithm of plot processing is necessary. Based on the analysis of practical flight data, this paper proposes an adaptive algorithm in the step-variant scanning for GMTI radar, which considers both radar work parameter and the environmental factors. In the end, the simulation proves that the adaptive algorithm can effectively improve target plot precision, reduce false alarm, improve tracking quality and reduce the burden of the data processing system.