基于新适值函数的互调干扰抑制优化算法

Optimization Algorithm of Intermodulation Interference Suppression Based on New Fitness Function

多部电台同址同时工作会产生大量的互调信号,影响系统的正常工作。针对该问题,提出一种互调干扰抑制优化算法。使用遗传算法构建新的适值函数,对同址通信系统进行频率优化配置以抑制互调干扰。比较不同的适值函数,仿真结果表明,采用互调信号与工作频率的最小距离作为适值函数,可以快速实施频率配置优化,实现干扰抑制,避免互调信号对系统的影响。

An optimization algorithm is proposed to restrain the co-site intermodulation interference.The interference can be effectively suppressed with reasonable frequency assignment.It uses genetic algorithm with a new fitness function to optimize the assignment process.Comparison and simulation analysis are done for different fitness function.Result indicates that using the minimum distance of intermodulation signal and working frequency for fitness function makes the assignment process quick and effective.The effect of intermodulation interference can be reduced.