gÖktÜrk-1卫星图像精度评估

IF 3.1 Q2 ENGINEERING, GEOLOGICAL International Journal of Engineering and Geosciences Pub Date : 2020-10-01 DOI:10.26833/ijeg.650899
G. Arasan, A. Yilmaz, Orhan Firat, Ertuğrul Avşar, H. Güner, Kemal Ayğan, Damla Yüce
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引用次数: 1

摘要

光学卫星图像今天在响应许多不同领域和学科对地理空间基础日益增长的需求方面具有重要地位,特别是因为它们的可用性和时间分辨率。由于各种地理空间信息和数据的生产过程如正射影图、地图、矢量数据等在特别为大型项目区提供了减少实地工作所需成本和时间的机会,因此人们对高分辨率卫星图像产生了兴趣。Gokturk-1是一颗光电卫星,于2016年12月5日发射,获取0.50 m空间分辨率图像,旨在满足土耳其的高分辨率图像需求。本文研究了Gokturk-1卫星在两个不同区域的立体影像,采用不同方法生成的数字地表模型和正射影的水平和垂直精度。因此,尽管Gokturk-1卫星图像产生的指向精度和数字表面模型精度会根据Gokturk-1卫星的入射角而变化,但用于生产正射影像的数字地形模型是卫星图像定向的选择方法;正射影像的平面精度优于±2 m RMSE,高度精度优于±3 m RMSE。
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ACCURACY ASSESSMENT OF GÖKTÜRK-1 SATELLITE IMAGERY
Optical satellite imagery has an important place today in terms of responding to the increasing need for geospatial base in many different fields and disciplines, especially because of their availability and temporal resolution. Because all kinds of geospatial information and data production processes such as orthoimages, maps, vector data and etc. in especially for large project areas provide the opportunity to reduce the cost and time required in the field work, so the interest in high resolution satellite imagery. Gokturk-1, an electro-optical satellite that was launched on December 5, 2016 and acquiring 0.50 m spatial resolution imagery, aims to meet the high resolution image requirements of Turkey. In this study, the horizontal and vertical accuracy of the Digital Surface Model and orthoimages produced by different methods from stereo images obtained from Gokturk-1 satellite in two different regions were investigated. As a result,  although the pointing accuracy and the Digital Surface Model accuracy produced from Gokturk-1 satellite imagery, will vary according to the incidence angle of Gokturk-1 satellite, the Digital Terrain Model used in the production of the orthoimage, the selected method for orientation of satellite imagery; a planimetric accuracy of better than ± 2 m RMSE in  orthoimage and a height accuracy of better than ± 3 m RMSE is accomplished.
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CiteScore
4.00
自引率
0.00%
发文量
12
审稿时长
30 weeks
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