Design of a Radar Moving Target and Clutter Environment Simulator

This paper introduces the design of a laboratory radar moving target and clutter environment simulator, which can be used for radar function test and performance verification. The simulator uses DDWS (direct digital waveform synthesis) and DDS (direct digital Synthesis) technology, which can generate corresponding simulated target echo RF signals according to the target echo characteristic parameters, and generate interference signals, noise signals and clutter signals in specific frequency bands according to the experimental needs, so as to construct the electromagnetic signal environment for radar testing. The variable difference method model and the least square fitting method model are used to calculate the targets’ simulated routes, and the real-time position of the radar feed is controlled by the feed motion controller to realize echo simulation of high-speed moving targets. The BOX-MULLER transform is used to generate Gaussian random sequences, and a high-speed Gaussian noise synthesis method based on FPGA is used to generate high-precision clutter and interference simulation.