Chapter 4 gives out the blind detection algorithm of unknown fh signal using multi-hop autocorrelation technique and blind signal separation algorithm using joint approximate diagonalisation of eigen-matrices ( jade ) technique . some elementary simulation results are also presented here 第四章对用多跳自相关技术做跳频信号盲检测以及用特征矩阵联合对角化技术(jade)做跳频信号盲分离的算法做了研究和仿真。