A Wideband Signal Simulator for Radar Seeker Test

For the development of radar seekers, it is essential to build up an infield test system, whose key part is a real-time radar return simulator. At present, digital radio frequency memory (DRFM) structure has been more widely used in the radar return simulator. This paper presents a wideband radar return simulator based on DRFM. This simulator comprises radio frequency (RF) front-end, high speed analog to digital convertor (ADC) and digital to analog convertor (DAC), and large scale field programmable gate array (FPGA). Design aspects are discussed, and detailed system scheme is illustrated. Corresponding test results are given to verify the validity of whole system.