最优频移小波包变换窄带干扰抑制方法研究

Research on the narrowband interference suppression method based on optimal frequency shift WPT

针对频移小波包变换不能抑制多音干扰的问题,提出了基于遗传算法最优频移小波包变换的窄带干扰抑制方法。采用遗传算法进行频移和分解层数的最优选择,并采用奇偶判断的方法进行自适应小波包分解。仿真结果表明,该方法能够有效抑制窄带干扰。

For the multi-tone interference could not be suppressed by shift WPT,the narrowband interference suppression method based on genetic algorithm optimal frequency shift WPT was proposed.Genetic algorithm was adopted to choose the optimal frequency shift and the highest frequency resolution level.And the adaptive WPT decomposition method based on parity checking was presented.Simulation results show that this algorithm can suppress NBI interference effectively.