珠峰地区遥感影像高程转换实用化方法  

Practical Method for Transforming the Height of Satellite Remote Sensing Images in the Qomolangma Peak Area

作　　者：张雪萍 郭鑫伟 杨新海 王莉莉 田婕 ZHANG Xueping;GUO Xinwei;YANG Xinhai;WANG Lili;TIAN Jie(Shaanxi Bureau of Surveying,Mapping and Geoinformation,MNR,Xi'an 710054,China;Geodetic Data Processing Center of Ministry of Natural Resources,Xi'an 710054,China;Shaanxi Surveying and Mapping Production Supervision and Inspection Station of Ministry of Natural Resources,Xi'an 710054,China)

机构地区：[1]陕西测绘地理信息局,陕西西安710054 [2]自然资源部大地测量数据处理中心,陕西西安710054 [3]自然资源部陕西测绘产品质量监督检验站,陕西西安710054

出　　处：《测绘与空间地理信息》2024年第9期5-7,共3页Geomatics & Spatial Information Technology

基　　金：LGIE&LSMSGIT联合基金(2024-03-04);国家自然科学基金项目(41904040,41774004)资助。

摘　　要：区域似大地水准面实现了大地高成果与正常高成果的转换,但当前规则格网模型不能与遥感影像数据处理有效融合。针对珠峰地区卫星遥感影像高程快速转换,提出了一种适用于不同比例尺的实用化区域似大地水准面模型建立方法,提高卫星遥感影像数据处理的效率。首先分析了珠峰区域似大地水准面变化,其次利用梯度函数模型描述区域似大地水准面变化趋势并分区,最后根据1∶10000比例尺测图高程精度要求建立实用化区域似大地水准面模型。以珠峰地区为例,建立了1∶10000比例尺测图所需珠峰地区实用化区域似大地水准面模型,数据验证实用化模型能够满足珠峰地区1∶10000立体测图高程精度要求。The regional quasi-geoid model can realize the transformation between geodetic height and normal height,the current regular grid model however cannot be effectively fused with remote sensing image data processing.Aiming at the requirement of rapid height transformation of satellite remote sensing images in the Qomolangma peak area,a practical regional quasi-geoid model applicable to various scales of maps is developed to improve the efficiency of height transformation from geodetic height to normal height for satellite remote sensing images.At first,the variety of regional quasi-geoid in the Qomolangma peak area will be analyzed.Then the gradient function is used to describe the change trend of regional quasi-geoid and to divide the section.Finally,the practical model of regional quasi-geoid can be constructed according to the accuracy requirement of 1∶10000 scale mapping for the satellite remote sensing images.The data in the Qomolangma peak area is employed to verify the new algorithm.It is shown that the practical model of regional quasi-geoid can meet the height accuracy requirement of 1∶10000 scale topographic mapping.

关 键 词：卫星遥感影像 区域似大地水准面 梯度函数 1∶10000测图 

分 类 号：P237[天文地球—摄影测量与遥感]