双通道恒模干扰抑制VHF接收机设计与实现  

Design and implementation of bi-channel constant modulus anti-interference VHF receiver

作　　者：胡铁乔[1] 吴勇[1] 吴仁彪[1] 石庆研[1] 王心鹏 

机构地区：[1]中国民航大学智能信号与图像处理天津市重点实验室,天津300300

出　　处：《中国民航大学学报》2015年第1期13-18,共6页Journal of Civil Aviation University of China

基　　金：天津市科技支撑计划重点项目(10ZCKFGX04000);国家科技支撑计划(2011BAH24B12);国家自然科学基金项目(61172112;61271404;61179064);中央高校基本科研业务费专项(ZXH2012M006;ZXH2009A003;ZXH2012M006;3122013D020;3122013SY27)

摘　　要：为了解决民航地空通信受到无线电干扰的问题,提出了双通道恒模干扰抑制自适应抑制接收机的设计实现方案。接收机中的信号处理平台在FPGA中实现自适应干扰抑制,使用DSP判断恒模算法输入信号是否存在干扰,以及对恒模算法输出信号进行属性判断以防止误捕获。再配以具有VHF信号接收功能的射频前端电路,实现接收、干扰抑制、解调地空通信信号的功能。系统测试表明,双通道恒模干扰抑制接收机能够自适应地抑制恒模干扰。To solve the radio interference during civil aviation ground-air communication, a design and implementation scheme of bi-channel constant modulus adaptive anti-interference receiver is presented based on FPGA and DSP platform. The signal-processing platform of receiver achieves adaptive interference cancellation in FPGA. DSP is used to determine whether there exists interference in constant modulus algorithm, and to determine the properties of output signals in case of false capture. Coupled with RF front-end signal receiving circuit, the re- ceiver is able to receive signals, suppress interference and demodulate ground-air communication signals. Test results show that the bi-channel constant modulus anti-interference receiver can suppress constant modulus in- terference in self-adaptive way.

关 键 词：双通道恒模算法 干扰抑制 FPGA DSP 

分 类 号：V243[航空宇航科学与技术—飞行器设计] TN911.7[电子电信—通信与信息系统]