基于GF7卫星影像生产DSM数据及精度验证  

Production of DSM Data and Accuracy Verification Based on GF7 Satellite Imagery

作　　者：靳文凭[1] 周烽松 张玉冰 Jin Wenping;Zhou Fengsong;Zhang Yubing(Hunan Institute of Geomatics Sciences and Technology,Changsha Hunan 410007)

机构地区：[1]湖南省测绘科技研究所,湖南长沙410007

出　　处：《国土资源导刊》2023年第2期18-22,共5页Land & Resources Herald

基　　金：湖南省自然资源科技计划项目(编号:2021-3);2022年自然资源湖南省卫星应用技术体系建设。

摘　　要：为减少GF7卫星在基础地理信息数据生产的数据准备工作,本文通过改变地面控制点数量研究GF7卫星影像生产1∶10000 DSM产品最少需要的控制点数量。结果表明,DSM成果精度受控制点数量影响明显,在3~5个地面控制点的约束下,DSM成果可以满足1∶10000数字高程模型的精度要求。研究成果对降低GF7基础测绘产品生产数据依赖和加快数据更新具有一定参考价值。In order to reduce the data preparation work of GF7 satellite in the production of basic geographic information data,this article studies the minimum number of control points required for GF7 satellite image production of 1∶10000 DSM products by changing the number of ground control points.The results indicate that the accuracy of DSM results is significantly affected by the number of control points.Under the constraints of 3-5 ground control points,DSM results can meet the accuracy requirements of the 1∶10000 digital elevation model.This achievement has certain significance in reducing the dependence on production data of GF7 basic surveying and mapping products and accelerating data updates.

关 键 词：高分七号 DSM 地面控制点 精度验证 

分 类 号：P236[天文地球—摄影测量与遥感]