合成孔径雷达高度计应用研究进展  

Research progress in application of synthetic aperture radar altimeter

作　　者：宿潇野 李小涛[2] 苏巧梅[1] 马建威[2] 宋文龙[2] 许佳昕 SU Xiaoye;LI Xiaotao;SU Qiaomei;MA Jianwei;SONG Wenlong;XU Jiaxin(School of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China)

机构地区：[1]太原理工大学矿业工程学院,山西太原030024 [2]中国水利水电科学研究院,北京100038

出　　处：《水利水电技术（中英文）》2023年第10期103-114,共12页Water Resources and Hydropower Engineering

基　　金：国家自然科学基金项目(42171424,42271432);山西省自然科学基金项目(201901D111048);三峡后续工作:三峡区间防洪安全遥感调查评估(JZ110161A0012023)。

摘　　要：【目的】合成孔径雷达高度计采用延迟-多普勒技术有效提高观测精度,使得卫星测高技术可以应用于地形复杂区域。为探究合成孔径雷达高度计的应用进展,【方法】对合成孔径雷达高度计的发展进行概述,列举了目前主要载荷合成孔径雷达高度计的测高卫星,并对测高原理以及数据处理方法进行描述,针对合成孔径雷达高度计在海洋、冰川、内陆湖泊区域以及高程数据产品制作的应用进行重点分析。【结果】针对当前合成孔径雷达高度计应用现状,总结出合成孔径雷达高度计存在时空分辨率受限、数据精度检验代价较大、长序列数据短缺的问题,并提出多源数据协同、三维领域拓展以及数据处理方法优化的发展方向。【结论】合成孔径雷达高度计目前对海洋、冰川及内陆湖泊的高程监测方面已具有较强的应用能力,随着卫星观测密度的增加及数据优化处理方法的改进,合成孔径雷达高度计在高程监测、地形反演、水量监测等方面将具有更加广泛的应用,为探究地球水资源变化提供科学依据。[Objective]The synthetic aperture radar altimeter adopts the delay-doppler technology to effectively improve the observation accuracy,so that the satellite altimetry technology can be applied to areas with complex terrain.In order to explore the application progress of synthetic aperture radar altimeter,[Methods]the development of synthetic aperture radar altimeter is summarized.The altimetry satellites are listed that are currently mainly loaded with synthetic aperture radar altimeter.The altimetry principle and data processing method are described.The application of synthetic aperture radar altimeter in ocean,glacier,inland lake area and elevation data product production is emphatically analyzed.[Results]In view of the current application status of synthetic aperture radar altimeter,the problems existing in the synthetic aperture radar altimeter are summarized,such as limited spatial and temporal resolution,high cost of data accuracy inspection,and shortage of long sequence data,and proposes the development direction of multi-source data collaboration,three-dimensional field expansion,and data processing method optimization.[Conclusion]At present,the synthetic aperture radar altimeter has a strong application ability in the elevation monitoring of oceans,glaciers and inland lakes.With the increase of satellite observation density and the improvement of data optimization processing method,the synthetic aperture radar altimeter will have more extensive applications in elevation monitoring,terrain inversion,water volume monitoring and other aspects,providing scientific basis for exploring the changes of the earth′s water resources.

关 键 词：卫星测高 合成孔径雷达高度计 微波遥感 遥感应用 水资源 遥感 冰川 内陆湖泊 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]