基于频域对消的噪声调幅干扰抑制算法

A High Performance Algorithm of Noise Amplitude Modulation Interference Suppression Based on Frequency Domain Cancellation

为了有效抑制噪声调幅干扰,该文通过对数变换,由信号虚部准确估计干扰信号载频和初始相位,再对干扰信号进行解调,利用频域对消方法抑制干扰信号分量。仿真实验显示算法具有较好的干扰抑制效果。

In this paper, a high performance frequency domain cancellation algorithm is presented to suppress the noise amplitude modulation interference. By the logarithm transform, the carrier frequency and initial phase of the jamming signal are estimated from the imaginary part of the transformed echo signal including jamming, and then, the echo signal is demodulated with the estimated jamming carrier frequency. Finally, the jamming may be suppressed with frequency domain cancellation. Simulation shows that the proposed method has a low computational cost and high performance.