机载InSAR数据自动生成DEM技术及其在内蒙古丰镇地区的应用  

Automatic DEM generation technology by airborne InSAR data and its application to Fengzhen,Inner Mongolia

作　　者：刘艳华[1] 赵争[1] 黄国满[1] 

机构地区：[1]中国测绘科学研究院摄影测量与遥感研究所,北京100039

出　　处：《地学前缘》2006年第3期104-107,共4页Earth Science Frontiers

基　　金：国家"863"资助项目(2001AA132010);国家基础测绘资助项目(1469990424233)

摘　　要：合成孔径雷达干涉测量(InSAR)技术是传统的合成孔径雷达技术和射电天文学中的干涉测量技术相结合而发展起来的一项新的遥感技术,这一新技术以其在大范围地表高程测量和地表变形测量方面所具有的独特优势和巨大潜力,而成为对地测量和地学科学研究的一个重要的工具。同星载InSAR相比,机载InSAR在高分辨率区域测图方面具有较大的优势,而且数据采集的时间安排及飞行方位选取方面相对较灵活。而且SAR是一种主动微波遥感技术,具有全天时全天候的工作特征,这一技术也正在成为中国西部困难地区测图的一个非常有效的工具。在详细分析应用机载InSAR数据测量地表高程的基本原理的基础上,提出了机载InSAR自动生成DEM的技术流程,并以内蒙古丰镇地区的机载InSAR数据为基础进行了试验研究,取得了较好的效果,为这一新技术的进一步实际应用奠定了基础。Synthetic aperture radar interferometry （InSAR） is a new imaging remote sensing technique developed by incorporating conventional SAR techniques and interferornetry techniques that have been used in radio astronomy for several decades. The InSAR becomes a very important tool for earth observation and scientific research because of its considerable potential in large scope measurement of surface topography and deformation. Compared to the spaceborne InSAR, the role of airborne InSAR system lies in regional mapping at high resolution. The flexibility in scheduling airborne acquisitions in acquiring data from different orientations and in configuring a variety of radar modes are key assets of airborne systems, which will ensure their usefulness well into the future. In this paper, the basic principles of surface topographic measurement by airborne InSAR data are described in detail. Then a corresponding flowchart of automatic digital elevation model （DEM） generation is presented. Some experimental research based on airborne InSAR data acquired at Fengzhen, Inner Mongolia is introduced. Therefore, a solid foundation for further application to regional mapping by InSAR techniques has been prepared.

关 键 词：干涉测量 合成孔径雷达 星载 机载 数字高程模型 

分 类 号：P225.1[天文地球—大地测量学与测量工程] P23[天文地球—测绘科学与技术]