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HiWATER: 1m DEM data production in Dayekou Basin Chinese Version


Trough the select tasking, we obtained the WorldView-2 stereo image data in Dayekou Basin production in mid-May 2012. In the same year from July to August, 27 GPS ground control points (GCP) and checkpoints were measured based on the watershed differential GPS control network. Based on the full-field GCPs, the rational polynomial coefficients (RPC) files of WorldView-2 images were corrected in the digital photogrammetry software system. In the stereo model, 60 high-precision tie points evenly distributed were got through image matching technology, and the 1-m and 2-m resolution digital elevation model (DEM) were rapid extracted. Moreover, the DEM was edited in some key areas, such as the shady forest coverage and Dayekou reservoir. The terrain feature points and line data were added to improve the accuracy of the results in large variation of terrain feature. Check points were composed of GPS points and model confidential points, which used for quantitative validation. And they root mean square errors RMSE were 1.9 meters and 1.2 meters respectively, which achieve the requirements of two degree accuracy of 2.0 m at a scale of 1:1000 in high mountains.


CitationHelp

Paper Cite Zhang Yanli, Li Chourong, Wang Xiuqin, Zhang Pengji. Preparation of High-resolution DEM in Dayekou Basin based on the WorldView-2 and its accuracy analysis. Remote Sensing Technology and Application, 2013, 28(3): 431-436.

Dataset Cite Zhang Yanli. HiWATER: 1m DEM data production in Dayekou Basin. Heihe Plan Science Data Center, 2013. doi:10.3972/hiwater.138.2013.db (Download: RIS | Bibtex)


General introduction of HiWATER

  1. Li X, Cheng GD, Liu SM, Xiao Q, Ma MG, Jin R, Che T, Liu QH, Wang WZ, Qi Y, Wen JG, Li HY, Zhu GF, Guo JW, Ran YH, Wang SG, Zhu ZL, Zhou J, Hu XL, Xu ZW. Heihe Watershed Allied Telemetry Experimental Research (HiWATER): Scientific objectives and experimental design. Bulletin of the American Meteorological Society, 2013, 94(8): 1145-1160, 10.1175/BAMS-D-12-00154.1.Detail | Download

Limitations

The dataset is generated from the "Heihe Watershed Allied Telemetry Experimental Research (HiWATER)". User must have a clear statement in the article of the original data source and cite the dataset and papers in the Citation section.

Fund

  • National Natural Science Foundation of China (No. 91125004)

Online Resources



InformationFile list

  • File Format: *.img
  • Size: 119 MB
  • Downloaded: 49
  • Viewed: 9557
  • Temporal Range: 2012-04-01 to 2012-05-01

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  • Last update: 2016-01-14
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