基于DDS的末制导雷达中频模拟器的设计  

Design of the Intermediate Frequency Simulator for a Terminal Homing Radar Based on DDS

作　　者：王静[1] 陈伯孝[1] 

机构地区：[1]西安电子科技大学雷达信号处理重点实验室,陕西西安710071

出　　处：《制导与引信》2008年第3期30-36,共7页Guidance & Fuze

摘　　要：对FPGA控制多通道DDS进行了研究,设计了末制导雷达通用中频模拟器。该模拟器在内/外同步和时钟作用下,既可以产生不同类型的调制、信号的带宽和时宽、目标的时延和多普勒频率可以灵活控制的目标回波信号;又可以动态模拟雷达在搜索、跟踪等状态下的单脉冲和、差两路中频模拟信号;还可以模拟雷达在不同工作模式下的伺服系统状态(天线位置)。测试结果表明,该模拟器具有频谱纯度和稳定度高、使用灵活方便等特点,已经应用于多种末制导雷达信号处理机的设计与调试。The method of FPGA and two-channel DDS is used in this paper to design the intermediate frequency simulator, which is used in terminal homing radar. The IF simulator can generate different kinds of modulated signals with different duration, different time bandwidth, different frequency bandwidth, it can dynamicly simulate sum or difference of single-pulsed signal under the inner or the external synchronization, it can also simulate servo system under different mode. The practice results have proved its excellence of pure frequency spectrum, high stabilization, and flexibility to use. This simulator is successfully used in the design and debug of signal processors in many types of terminal homing radar.

关 键 词：中频 模拟器 末制导 

分 类 号：TN957.51[电子电信—信号与信息处理]