基于改进小波阈值函数的船用雷达回波去噪

为了对船用雷达（9GHz脉冲雷达）回波降噪，提出了基于小波阈值函数的改进方法，分析了中间阈值以及对应的阈值函数对船用雷达回波信号降噪的影响.在模拟雷达回波信号的降噪实验中，对新的阈值方法与软阈值、硬阈值、Firm阈值、Yasser阈值方法进行了比较.通过对阈值函数参数的调整，使得新的小波阈值函数得到更高的信噪比、更小的均方根误差和更大的能量比，证明了新方法的有效性；在实测雷达回波信号的降噪实验中，得到了一致的结论，证明了新方法的实用性.

Echo denoising of shipborne radar based on improved wavelet threshold function

In order to realize the echo denoising of shipborne radar(9 GHz pulse radar) ,an improved method based on the wavelet threshold function was proposed.The influence of the middle threshold and its function on the echo denoising of shipborne radar was analyzed.New threshold method was compared with the soft threshold,hard threshold,Firm threshold and Yasser threshold methods in the denoising experiment of simulative radar echo.The results show that better SNR,less RMSE and larger PER can be achieved using the...