雷达信号模拟器的中频信号产生器设计

Design of Intermediate Frequency Signal Generator for Radar Signal Simulator

针对侦察系统性能指标的检测,雷达信号模拟器是常用工具,而其以中频信号产生模块为主。采用ADSPBF533与高性能FPGA硬件平台,利用直接数字频率合成技术产生各种雷达中频信号波形数据,生成雷达中频信号,再经过对该中频信号进行变频、放大、滤波,即可形成模拟雷达信号,一个中频信号产生模块包括1块通信控制板和3块中频信号产生模块,并可同时模拟出12部雷达中频信号。

The radar signal simulator is a common tool for the detection of the performance index of the reconnaissance system,and the intermediate frequency signal generator module is the most important part. The ADSPBF533 and high performance FPGA hardware platform are adopted to produce a variety of radar signal waveforms by the technology of direct digital frequency synthesis for generating radar IF signals,which form a simulated radar signal via frequency conversion,amplification,and filtering. A medium frequency signal generating module consists of a communication control board and 3 intermediate frequency signal generating module boards,capable of simulating12 radar IF signals at one time.