干涉成像高度计是一种将传统天底点卫星高度计和侧视成像干涉雷达技术相结合的新型微波传感器。它能够在近天底点卫星轨迹两侧获取高分辨率成像刈副，是观测海表面地形、海洋中尺度和次级中尺度现象，以及研究海洋环流和气候变化有效工具。干涉成像高度计已经成为国内外研究热点，但海面风速和波浪遥感机理与信息提取方法的报导尚少，属于创新性前沿科学研究问题。本项目将重点研究海面风速和波浪遥感成像机制，建立近天底点海面微波散射模型；发展海面风速和均方斜率、海面相对高度反演方法。该研究可为我国"天宫二号"上搭载的三维成像高度计海洋观测的校正和验证提供一定的理论和技术支撑。

Interferometric Imaing Altimeter (IMA) is an innovative microwave sensor that bridges the gap between conventional nadir altimeter and side-looking radar interferometry, which is able to acquire high wide near-nadir swaths with high resolution on both sides of the satellite track.It is a very useful instrument to observe ocean surface topography, meso-scale and sub-mescole-scale oceanographic phenomenon, and to investigate ocean circulation and climate change.Recently, Though IMA has become a research spot,there are relatively few reports on ocean surface wind speed and wave imaging mechanism and retrieval method. This project is aim to investigate ocean surface wind and wave imaing mechanisms, and develop a near-nadir ocean surface microwave scattering model. We will also establish ocean surface wind speed and mean square slope athod, as well as relative elevation retrieval method. This study will provides theoretical and technical instructions for calibration and validation of three-dimensional imaging altimeter onborad "Tiangong-2".