关键词: 增强型罗兰接收机, 高阶累积量, 双谱, 高斯白噪声, 载波干扰

Abstract: In order to improve the performance of eLORAN navigation and timing receiver,such as enhancing the capability of interference and noise suppression,an interference suppression algorithm based on bispectrum for adaptive filtering was proposed.Using bispectrum method,the additive Gaussian white noise can be suppressed and the interference can be detected,then coefficient of the adaptive filter is updated by the detected signal,and finally interference can be eliminated. The theoretical analysis and experiment results show that the interference with additive Gaussian white noise can be well detected and eliminated,especially in the case of strong noise.The interference suppression problem of eLORAN receiver in strong noise can be solved with this method.

Key words: eLORAN receiver, High-order cumulant, Bispectrum, White gaussian noise, Continuous wave interference