S模式机载应答机的中频数字化处理  

IF Digitization Processing of Airborne Mode S Transponders

作　　者：姚元飞[1] 佟力[1] 严国荣[1] 

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2009年第6期70-73,共4页Telecommunication Engineering

摘　　要：介绍了S模式机载应答机的中频数字化处理的设计方法。采用FPGA和高速A/D转换器实现了80MHz的高速数字信号处理系统,解决了传统二次监视雷达(SSR)目标分辨力差、窜扰等问题,完成了二进制振幅键控(ASK)和二进制差分相移键控(DPSK)组合成的询问信号的中频数字化处理全过程。The intermediate frequency （IF） digitization processing design method of airborne mode S transponders is introduced. By using FPGA and high -speed A/D converter,an 80 MHz high -speed digital signal processing systems is realized, so that such problems as target poor resolution and confusion in traditional secondary surveillance radar are solved, and the entire IF digitization process of the inquiry signal combined by the binary amplitude shift keying（ASK） and differential binary phase shift keying（DSPK） is completed.

关 键 词：二次雷达 S模式应答机 数字信号处理 中频数字化 软件无线电 

分 类 号：TN959[电子电信—信号与信息处理]