基于小波变换的SAR抗连续波白噪声干扰研究

Antijamming of SAR's Continuous Wave White Noise Based on Wavelet Transform

分析了SAR回波信号与连续波干扰信号的特点,利用小波变换良好的时频局部特性,采用小波变换的办法滤除连续波干扰。分别在时频域和图像域做了仿真实验,在图像域的仿真分析较好的克服了时频域内信噪相似度大分离困难的问题,可以较好的消除连续波噪声产生的影响。

By analyzing the features of SAR returning echo and the continuous wave noise, the wave-let transform is used to denoise for its time-frequency specialty. Simulations based on time-frequency spe-cialty and image specialty indicate that it is difficult to denoise in time-frequency field while to it is easier to denoise in the image field, which reduces the affection of the continuous wave noise efficiently.