跳频信号参数估计。参数为跳速、跳时和跳频频率集。文档包括一个短时傅里叶变换函数，一个参数估计函数，一个参数估计相对误差随SNR的曲线图和一个时频分析图。-Frequency hopping signal parameter estimation.Parameters for speed, to jump and jump frequency set.Document includes a function of the short-time Fourier transform, a parameter estimation function, a parameter to estimate relative error with the SNR curve and a time-frequency analysis diagram.