南黄海辐射沙脊群海域浅海地形SAR成像理论与遥感探测研究

项目名称： 南黄海辐射沙脊群海域浅海地形SAR成像理论与遥感探测研究

项目编号： No.41576168

项目类型： 面上项目

立项/批准年度： 2016

项目学科： 天文学、地球科学

项目作者： 徐青

作者单位： 河海大学

项目金额： 20万元

中文摘要： 浅海地形是海洋环境的重要要素。探测浅海地形不仅对近海动力学的理论研究具有重要意义，而且对海上交通运输、海洋渔业、近海工程、海岸带开发和利用及海洋军事等均具有重要意义。本研究立足我国地形地貌复杂多变的典型海域-南黄海辐射沙脊群海域，旨在综合利用星载合成孔径雷达（Synthetic Aperture Radar，SAR）和海洋数值模拟开展平行于潮流方向的浅海水下地形的SAR成像理论研究。首先基于二维海洋模型与海面微波散射成像模型，开展浅海地形SAR成像理论研究。结合大量星载SAR影像和同步潮流、海面风数据，从理论与统计分析两个层面探讨潮流与海面风对浅海地形SAR成像的影响。研究成果既是对SAR浅海地形遥感成像理论的有益补充，又可为SAR浅海水深反演提供理论基础，从而近海水域的合理开发和利用以及环境生态的可持续发展提供技术支撑。

中文关键词： 合成孔径雷达；浅水地形；南黄海辐射沙脊群；；

英文摘要： Shallow water topography is one of the key components of coastal ocean environment. Its’ measurement is significant for studying coastal ocean dynamics and plays an important role in coastal navigation, ocean fisheries, offshore engineering, and effective coastal zone management as well as marine military activities. The bathymetry of the radial sand ridge region in the southern Yellow Sea is remarkably complicated and changes rapidly. The project aims to study the theory of SAR (synthetic aperture radar) imaging of along-tidal-current underwater ridges and develop bathymetry assessment model using both satellite SAR imagery and ocean modelling. Firstly, the shallow water SAR imaging theory is explored based on two-dimensional (2D) ocean model and ocean surface microwave backscattering model. Using nearly 100 satellite SAR images and synchronous ocean current and wind data, we will theoretically and statistically investigate the influence of ocean current and wind on SAR imaging of shallow water topography in the study area. The results will not only complement the existing theory of SAR imaging of shallow water topography, but provide technical supports on offshore resource exploration and sustainable development of local environment.

英文关键词： SAR；shallow water topography；Subei bank；；