转发式干扰条件下慢跳频通信系统波形优化设计  

Waveform optimum design of slow frequency hopping communication system under repeater jamming

作　　者：李国威 陆锐敏 魏鹏 洪进[2] LI Guowei;LU Ruimin;WEI Peng;HONG Jin(The 63rd Research Institute,National University of Defense Technology,Nanjing 210007,China;Air Force Early Warning Academy,Wuhan 430019,China)

机构地区：[1]国防科技大学第六十三研究所,南京210007 [2]空军预警学院,武汉430019

出　　处：《空军预警学院学报》2021年第4期254-257,262,共5页Journal of Air Force Early Warning Academy

摘　　要：为对抗伴星转发式干扰,从转发式干扰对调制星座图影响分析出发,推导出了BPSK、QPSK调制在转发式干扰下的误比特率公式,分析了误比特率与干扰强度、转发时延、载波频率、信噪比等参数的关系,提出了一种通过选择跳频频率集来降低转发式干扰影响的抗干扰波形设计方法.仿真结果验证了所推导出的误比特率公式的正确性及所提抗干扰波形设计方法的有效性.In order to counter the companion satellite repeater jamming,this paper starts from the analysis of the influence of repeater jamming on modulation constellation plot to derive the bit error rate(BER)formula of BPSK and QPSK modulation under repeater jamming,and then analyzes the relationship between BER and jamming intensity,repeater delay,carrier frequency,signal-to-noise ratio and other parameters.Finally,the paper proposes an anti-jamming waveform design method to reduce the influence of repeater jamming by selecting frequen-cyhopping frequency set.Simulation results verify the correctness of the derived BER formula and the effectiveness of the proposed anti-jamming waveform design method.

关 键 词：卫星通信 伴星转发式干扰 QPSK调制 误码性能 

分 类 号：TN973.1[电子电信—信号与信息处理] TN914.41[电子电信—信息与通信工程]