A frequency synthesizer of radar target simulation system
雷达目标模拟系统频率源研制

A frequency synthesizer mechanism of Radar target simulation system was designed in this paper, which is based on DDS and FPGA. The system control code was developed by adopting the top-down design way. The floating-point multiplication was equivalent to multiplication of fixed point by transforming the DDS instruction words formula. The X-band synthesizer was realized, and had the feature of fast frequency switching at 10 kHz resolution and 500 MHz bandwidth, its linearly frequency modulated signal bandwidth can large-scale controlled by the step of 25 Hz and the time by the step of 10 ns. The switching time was 900 ns. Some experimental results also were presented at the end.