短波通信抗干扰技术研究

Research on Anti-Jamming Technology of Short Wave Communication

介绍了短波宽带正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)通信系统的特性,阐述了OFDM系统对短波通信过程中窄带干扰的影响,分析了不同算法窄带干扰抑制的效果。总结窄带干扰抑制的手段并结合短波通信的特点,提出了一种有效的抗干扰措施和干扰抑制算法,通过准确计算干扰信号的中心频点,借助建立的多级陷波器移除干扰电台信号达到抗干扰的效果,对短波通信抗干扰技术的进步具有积极的意义。

The characteristics of the short wave broadband Orthogonal Frequency Division Multiplexing(OFDM)communication system are introduced,the influence of the OFDM system on the narrow band interference in the short wave communication process is explained,and the effect of narrow-band interference suppression by different algorithms is analyzed.Summarizing the methods of narrow-band interference suppression and combining the characteristics of short wave communication,an effective anti-jamming measure and interference suppression algorithm are proposed.By accurately calculating the center frequency of the interference signal,the interference radio signal is removed with the help of the established multi-level notch filter.Achieving the effect of anti-jamming is of positive significance to the advancement of anti-jamming technology in shortwave communication.