双通道局部序列相关跳频同步捕获方法

A Frequency Hopping Synchronized Acquisition Method Based on Dual-channel Local Sequence Correlation

针对传统跳频同步捕获过程中同步频点与业务通信频点的统计特性不同,导致同步信号易被侦察和干扰问题,提出一种基于双通道局部序列相关的跳频自同步捕获方法。该方法利用对偶序列跳频系统的双通道接收结构,通过对跳频长周期序列进行局部滑动相关匹配,实现跳频通信信号自同步。理论分析与仿真验证结果表明,该方法无需在载波上调制同步字头信息,具有较好的抗干扰能力,适用于对偶序列跳频等新型跳频抗干扰通信模式。

The statistical characteristics of synchronization frequency point and communication frequency point are different in the traditional frequency hopping(FH)synchronization acquisition process.Therefore,the synchronization signals are vulnerable to reconnaissance and jamming.In order to solve the above problem,a frequency hopping self-synchronization acquisition method based on dual-channel local sequence correlation was proposed.Using the dual-channel receiving structure of the dual sequence frequency hopping system,the frequency hopping communication signal self-synchronization is realized by local sliding correlation matching of the frequency hopping long-period sequence.The theoretical analysis and simulation verification of the proposed method showed that the method doesn t need to modulate the synchronization header information on the carrier,and had good anti-jamming ability,and it was suitable for new anti-jamming communication modes such as dual sequence frequency hopping.