计算目标和海洋回波的功率谱密度,实现了图像的加水印，去噪，加噪声等功能，粒子图像分割及匹配均为自行编制的子例程。- Calculating a target and ocean echo power spectral density, Realize image watermarking, de-noising, plus noise and other functions, Particle image segmentation and matching subroutines themsel