Abstract: The conventional BF/MFP or BF/MFP based on subspace are traditional array signal processing methods for sources detection and location. They are all belong to singe-resolution processing. In fact, the array signal has multiresolution structure, which is worthy of exploiture and utilization to enhance the ability of detection and location, especially to improve the robustness for BF/MFP. In this article, the time-space multiresolution modeling of multipath transmitted wave and the corresponding multiresolution focused processing are investigated, and it is shown from the analysis of actual sea-trial data that the performance of MFP can be improved.