Comparative Analysis of the Mapping Accuracy of GF-7 and ZY-3 Stereoscopic Images
In view of the current demand for 1∶10 000 scale basic geographic information data products in China,this paper takes the domestic stereoscopic images of GF-7 and ZY-3 03 satellite as the data source,on the basis of collecting the control data of the test area,constructs the stereopair models by using the front and back view images of the two data sources to generate digital orthophoto,digital linear graphic,digital elevation model,and other basic surveying and mapping products,uses field control data to compare and analyze the difference of horizontal and vertical accuracy of surveying and mapping products generated by two data sources under differ-ent terrain conditions.The results show that the stereoscopic mapping accuracy of GF-7 is obviously better than that of ZY-3 03 satel-lite and the two data sources can meet the accuracy requirements of 1∶10 000 and 1∶25 000 scale mapping production and the larger scale basic geographic information products,respectively.
GF-7ZY-3stereopair modelsbasic geographic information data
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NSTL
万方数据
