单通道恒模抗干扰民航VHF接收机设计与实现  

Design and implementation of single-channel constant modulus anti-interference civil aviation VHF receiver

作　　者：吴仁彪[1] 王心鹏 胡铁乔[1] 石庆研[1] 汪万维[1] 

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

出　　处：《中国民航大学学报》2014年第2期1-5,共5页Journal of Civil Aviation University of China

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

摘　　要：为了消除恒模干扰对民航VHF话音通信系统的影响,以FPGA和DSP为平台设计实现了基于单通道恒模算法的抗干扰接收机。接收机中的干扰抑制系统使用DSP对受干扰的AM信号进行载频估计,使用FPGA实现陷波、正交变换、基于非线性最小二乘法的恒模干扰实时估计和干扰抑制等过程。系统测试表明:抗干扰接收机能够有效地抑制恒模干扰,且具有处理速度快、稳定性好的特点。To eliminate the impact of constant modulus interference on civil aviation VHF voice communication, the an- ti-interference receiver based on single-channel constant modulus algorithm has been designed and imple- mented on FPGA and DSP platform. First the carrier frequency of interfered AM signal is estimated by using DSP in the interference suppression system of the anti-interference receiver, then the processes of carrier suppression, orthogonal transformation as well as real-time estimation of the constant modulus interference based on nonlinear least square method and interference suppression are implemented in FPGA. System testing demonstrates the anti-interference receiver can suppress interference effectively and has the features of fast processing and good stability.

关 键 词：单通道恒模算法 干扰抑制 FPGA DSP 

分 类 号：V355[航空宇航科学与技术—人机与环境工程] TN911.7[电子电信—通信与信息系统]