Abstract
Abstract. 3D modeling and DEM results have played an important role in economic construction, national defense construction, social development, and ecological protection. And the regional network adjustment is the basic work of DEM, and 3D modeling. In order to ensure the quality of the following results, this paper selects the regional network adjustment results of the ZY3 stereo satellite image and puts forward the test method of the regional network adjustment results from the inspection content. Meanwhile, the northwest of Africa is selected as the test area, and the inspection contents and methods proposed in this paper are verified. The inspection results show that the quality problems existing in the adjustment results of the regional network can be effectively checked. It has a certain reference function to the quality problem of the production process.
Highlights
The regional network adjustment of satellite images is to connect several different orbital images into one area, using appropriate control points and other known data, according to the principle of least square, to solve the orientation parameters of all images and the three geographical coordinates to be fixed and to realize the accurate orientation and positioning of light at imaging time (Zhou Ping,2016)
3D modeling, DEM, DSM, and other achievements have played an important role in economic construction, national defense construction, social development, and ecological protection, and so on
Most of the methods of checking the accuracy of the regional network adjustment results are the method of automatically matching the same name points and manual prick points by software to check the accuracy of the results, but it is found that the accuracy quality of the regional network adjustment results is affected due to the non-standard in the production process
Summary
The regional network adjustment of satellite images is to connect several different orbital images into one area, using appropriate control points and other known data, according to the principle of least square, to solve the orientation parameters of all images and the three geographical coordinates to be fixed and to realize the accurate orientation and positioning of light at imaging time (Zhou Ping,2016) It consists of satellite image files, re-generated rational polynomial parameters (RPC) files, the regional network adjustment accuracy reports, and other satellite image supporting files, such as metadata files, browsing map files, etc. There is no relevant technical specification for the inspection of the adjustment of the regional network of large-area satellite images, so it is necessary to form a set of inspection methods to ensure the quality of the results of the regional network. The northwest of Africa is selected as the test area, and the inspection contents and methods proposed in this paper are verified
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