【摘要】 卫星合成孔径雷达干涉技术 (INSAR)通过对地面同一地区两次或多次平行观测成像得到的复图象对 ,可以获得精度达米级的数字高程模型和监测地表的厘米级形变。首先简单介绍了INSAR技术的发展历史 ,然后阐述了INSAR技术和D -INSAR技术的原理及数据处理流程 ,同时给出了基于ERS - 1原始数据的实验结果。最后介绍了该技术在地形测量、地质灾害研究、极地监测、海洋表面监测等领域的应用。更多还原

【Abstract】 The INSAR uses the phase difference of the radar returns in two or more complex SAR images, acquired at separate times from a nearly exactly repeating orbit, to generate a digital elevation model (DEM) with a vertical resolution of a few meters and detect changes in the surface with a high resolution of only one centimeter. We first introduce the development of the INSAR. Then, we present the theory of INSAR and D INSAR and the procedure of data processing. Experiments have been carried out using ERS 1 data and the results demonstrate the feasibility of satellite INSAR technique. At last the applications of INSAR are introduced, which mainly include topographic mapping, geo hazards research, polar observation and ocean surface observation.更多还原