在强杂波背景下设计有效的海上雷达目标检测器是相当困难的。本文提出了一种基于海面散射的分维持性的雷达目标检测方法。它利用海上目标雷达回波与海杂波在分维持性上的差异来对海上舰船目标进行检测。将该方法用于实地录取的舰船雷达弱目标的回波，取得了较好的检测效果。 Designing an effective maritime radar target detector in the context of strong clutter is quite difficult. In this paper, a new method of target detection based on sea surface scattering is proposed. It makes use of the differences in the sub-maintenance of marine target radar echoes and sea clutches to detect targets at sea. The method is applied to the echoes of weak targets of ship radars which are taken on the ground and has achieved good detection results.