联合MSK平方谱检测和RS码的跳频抗干扰方法  

A Frequency-hopping Anti-jamming Method Based on Squared Spectrum Detection of MSK and RS Code

作　　者：吴文俊 宋惠轩 王秋云 潘雅茹 WU Wenjun;SONG Huixuan;WANG Qiuyun;PAN Yaru(No.50 Institute of CETC,Shanghai 200331,China)

机构地区：[1]中国电子科技集团公司第五十研究所,上海200331

出　　处：《通信技术》2023年第3期328-336,共9页Communications Technology

摘　　要：针对跳频最小频移键控(Minimum Shift Keying,MSK)通信系统中存在载波频偏和严重的部分频带干扰问题,给出一种联合MSK平方谱检测和RS码的跳频抗干扰方法。该方法在不增加系统开销的情况下,利用MSK信号自身特点,通过对MSK信号进行平方谱检测估计出载波频偏并补偿后进行MSK解调,同时通过平方谱检测获得RS码出现错误的码元位置后,联合RS码进行纠错纠删译码。该方法有效提高了跳频系统的抗干扰性能。最后,通过MATLAB仿真验证了该方法的可靠性。To address the problem of carrier frequency offset and severe partial-band jamming in frequency hopping MSK(Minimum Shift Keying)communication system,a frequency hopping anti-jamming method with joint MSK squared spectrum detection and RS code is proposed.Without increasing the system overhead,the method uses the features of the MSK signal itself and estimates the carrier frequency offset by performing squared spectrum detection on the MSK signal,and then performs MSK demodulation after compensating for the frequency offset.At the same time,it obtains the position of error elements with RS code by squared spectrum detection,and then combines it with errors-and-erasures correcting RS decoding.The method effectively improves the anti-jamming performance of the frequency hopping system.Finally,the effectiveness of the method is verified by MATLAB simulation.

关 键 词：跳频 MSK 平方谱检测 RS纠错纠删译码 

分 类 号：TN914.3[电子电信—通信与信息系统]