中文摘要：

在水下地形学是合成的孔雷达检测的海洋的特征之一。在水下潮汐的电流是重要因素为的地形学 SAR 成像机制表演在水下地形学 SAR 成像。因此在一样的风下面回答状况，为在不同时间获得的一样的区域的 SAR 图象包括不同信息在水下地形学。为了同时地利用 SAR 图象，在的不同时间获得了在水下地形学 SAR 察觉并且改进察觉的精确，基于察觉模型在水下有单个 SAR 图象的地形学和潮汐的电流的频率，一个察觉模型在水下有在不同时间获得的一系列 SAR 图象的地形学被与潮和潮汐的当前的数字模拟梳开发。证明介绍模型，的可行性台湾浅在南方插头定位了当学习区域和三幅 SAR 图象被使用在，台湾海峡被选择在水下地形学察觉。察觉结果与 R/V Dongfanghong 2 执行的水深度的领域观察数据相比，并且察觉的错误与单个 SAR 图象的那些相比。察觉模型在纸介绍了的所有比较表演改进精确在水下地形学 SAR 察觉，和介绍模型是可行的。

英文摘要：

underwater topography is one of oceanic features detected by Synthetic Aperture Radar.Underwater topography SAR imaging mechanism shows that tidal current is the important factor for underwater topography SAR imaging.Thus under the same wind field condition,SAR images for the same area acquired at different time include different information of the underwater topography.To utilize synchronously SAR images acquired at different time for the underwater topography SAR detection and improve the precision of detection,based on the detection model of underwater topography with single SAR image and the periodicity of tidal current,a detection model of underwater topography with a series of SAR images acquired at different time is developed by combing with tide and tidal current numerical simulation.To testify the feasibility of the presented model,Taiwan Shoal located at the south outlet of Taiwan Strait is selected as study area and three SAR images are used in the underwater topography detection.The detection results are compared with the field observation data of water depth carried out by R/V Dongfanghong 2,and the errors of the detection are compared with those of the single SAR image.All comparisons show that the detection model presented in the paper improves the precision of underwater topography SAR detection,and the presented model is feasible.