Design of Radar Electromagnetic Environment Simulator

A radar electromagnetic environment simulator is designed to generate echo signals of targets, active jamming, and clutters according to specified parameters and provide an electromagnetic environment with stated tactics background for radar operators. By analyzing the characteristics of radar electromagnetic environment and the form of echo signal, simulation of electromagnetic environment was reduced to control echo signal’s power, delay time, and Doppler frequency. Then the hardware implementation scheme including main control computer, digital signal processor (DSP), and field programmable gate array (FPGA) is put forward to accomplish setup of electromagnetic environment parameters, communication with radar, calculation of radar working state, and generation of analog signals. At last, the implemented system was connected to actual radar for experiments. The results prove that this system can generate echo signals consisting of targets, jamming, and clutters for the radar and simulate radar’s electromagnetic environment with specified patterns, which effectively help operators’ training.

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