基于跳频和调制跳变的无线通信抗截获新技术研究与展望

Study on a novel technology of LPI radio communication based on frequency-hopping and modulation-hopping

基于跳频和调制跳变的无线通信技术,是一种有效的低截获概率通信新技术。针对通信对抗技术发展的现状,即对跳频信号的截获接收、识别技术研究已经比较成熟,为保证信息的安全传输,提出了跳频和调制跳变相结合的思想。基于软件无线电的平台,提出了完整的跳频与调制跳变系统实现方案,从体制上减少了被截获识别的概率。并通过对其关键技术的深入研究,提出了调制星座图集分割方法和插入前导序列的同步算法,提高了系统的抗截获性能并且易于工程实现。最后对该技术的发展前景与趋势进行了展望。

Radio communication technology based on frequency-hopping and modulation-hopping is a novel effective LPI （Low Probability of Interception） communication technology. In nowadays, the technology of interception and identification of frequency-hopping signal is relatively mature. Considering this situation and in order to guarantee the secure transmission of information, an approach is put forward to combine frequency- hopping with modulation hopping. The whole software radio implementation scheme of LPI communication system based on frequency-hopping and modulation-hopping is built up to reduce the probability of being intercepted and identificated on the system level. Partition method of modulation constellation set and synchronization algorithm with predecessor sequence are proposed as critical technologies. The anti-interception capability of the system is improved. Finally the future development and possible application of the technology is prospected.