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通过分析频率跳变中的转移概率特性,对比了常规跳频、差分跳频的几种典型实现方式中跳频图案变化的状态转移特性,分析结果表明,转移概率对跳频系统抗截获和干扰性能有重要影响,差分跳频虽能提供基于信息数据的更随机化跳频图案,但就转移概率特性而言与常规跳频差别不大,且差分转移阶数较低时其抗干扰性能不如常规跳频.所提基于跳频转移概率分析的跳频图案分析和干扰方法更简单实用,且可根据性能指标和实际转移概率分布进行干扰策略的动态调整.
By analyzing the transition probability characteristics in frequency hopping, the state transition characteristics of frequency hopping pattern changes in several typical implementations of conventional frequency hopping and differential frequency hopping are compared. The analysis results show that the transition probability has an effect on the anti-interception and interference of frequency hopping system Although the differential frequency hopping can provide a more randomized frequency hopping pattern based on information data, the anti-jamming performance is not as good as the conventional frequency hopping in terms of the transition probability characteristics and the differential transfer order is low Conventional frequency hopping.The proposed frequency hopping pattern analysis and interference method based on probability analysis of frequency hopping transition is more simple and practical, and can dynamically adjust the interference strategy according to the performance index and the actual transition probability distribution.