异步组网跳频序列选择问题建模与优化

跳频序列的选择是决定跳频电台异步组网质量的重要因素。针对异步组网跳频序列的优选问题,结合异步组网跳频通信特点,定义了频率相似度、序列相似度和总体相似度,构建了异步组网可选跳频序列相似度模型。通过引入层次聚类分析法,解析了跳频序列在特征空间中的聚类结构。根据网间互扰度与序列相似度正相关的原则,从不同聚类中优选序列,组成跳频序列对,选出相似度最小的一组,即为异步组网的最优跳频序列组合。理论和仿真实验分析表明,层次聚类分析法简单易懂,可操作性强,具有较好的适应性和效率,所建相似度模型合理有效,能够较好地解决异步组网中跳频序列的优选问题。

Modeling and Optimization of Asynchronously Organized Network's Frequency Hopping Sequence Selection Problem

The selection of Frequency Hopping (FH) sequences is a crucial factor affecting the quality of FH communication in asynchronously organized networks. According to the requirement of FH communication in asynchronously organized networks, some definitions such as the frequency similarity, the sequence similarity, and the collective similarity are put forward, and then the similarity matrix of available FH sequences is constructed. The hierarchy clustering analysis method is introduced to analyze the clustering structure of FH sequences in characteristic space. Based on the principle that the similarity of suitable FH sequences used in different networks should be the least, the optimized sequences can be selected from different clusters finally.