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[1]GAO Zhiyuan,XIE Yuanli,LIU Zhuang,et al.Response of SRTM DEM Accuracy to Different Terrain Factors in the Loess Area of Northern Shaanxi Province[J].Research of Soil and Water Conservation,2019,26(03):174-178.

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Response of SRTM DEM Accuracy to Different Terrain Factors in the Loess Area of Northern Shaanxi Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 03 Page number: 174-178 Column: Public date: 2019-04-12

Title:: Response of SRTM DEM Accuracy to Different Terrain Factors in the Loess Area of Northern Shaanxi Province

Author(s):: GAO Zhiyuan^1,2, XIE Yuanli^1,2, LIU Zhuang^1,2, JIANG Guangxin¹; 1. College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China;
2. Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi’an 710127, China

Keywords:: ICESat/GLAS; SRTM DEM; terrain factors; geographical detector; fractal dimension

CLC:: P237

DOI:: -

Abstract:: We focused on the relationship between the accuracy of DEM and terrain factors. The gullies region of Northern Shaanxi was taken as the research area. In terms of elevation reference data, the vertical accuracy of ICESat/GLAS GLA14 data can reach 18 cm and the horizontal accuracy can reach 20 cm, which is used as the reference data of elevation standard. To study the influence of six topographic factors such as elevation, slope, aspect, total curvature, section curvature and plane curvature on the accuracy of SRTM DEM data, We not only used the geographical detectors analysis method, but also used the fractal dimension method to probe into the relationship between surface roughness and the SRTM DEM accuracy. Fractal dimension, as a dimensionless parameter, can better express the differentiation characteristics of the surface and preserve the original morphological characteristics of the surface. The results show that accuracy of the SRTM DEM is 9.531 meters in the study area. The influence of single terrain factor on the precision of SRTM DEM is smaller than that of different factor superposition, in which slope factor and curvature factor have great influence on accuracy, and the influence of elevation and aspect factor on accuracy is relatively small. The fractal dimension has a greater influence on the accuracy of data, and RSME of SRTM DEM increases gradually, and the growth rate decreases gradually until the peak value with the increase of fractal dimension.

References:: [1] 郭笑怡,张洪岩,张正祥. ASTER GDEM与SRTM3数据质量精度对比分析[J].遥感技术与应用,2011,26(3):334-339.
[2] 胡加佩,关小荣,刘学军.中国区域SRTM DEM与ASTER GDEM误差空间分布特征[J].地理与地理信息科学,2017,33(4):28-33.
[3] Shortridge A, Messina J. Spatial structure and landscape as- sociations of SRTM error[J]. Remote Sensing of Environment, 2011,115(6):1576-1587.
[4] Manas M, Vinee S, Malay M. Analysis of the accuracy of Shuttle Radar Topography Mission(SRTM)height models using International Global Navigation Satellite System Service(IGS)Network[J]. Journal of Earth System Science, 2015,124(6):1343-1357.
[5] Mukul M, Srivastava V, Mukul M. Accuracy analysis of the 2014-2015 Global Shuttle Radar Topography Mission(SRTM)1 arc-sec C-Band height model using International Global Navigation Satellite System Service(IGS)Network[J]. Journal of Earth System Science, 2016,125(5):1-9.
[6] Zhao G, Xue H, Ling F. Assessment of ASTER GDEM performance by comparing with SRTM and ICESat/GLAS data in Central China[C]. International Conference on Geoinformatics. Ieee, 2010:1-5.
[7] 詹蕾,汤国安,杨昕. SRTM DEM高程精度评价[J].地理与地理信息科学,2010,26(1):34-36.
[8] 张泉,杨勤科,程洁,等.中国地区3″SRTM高程误差特征[J].武汉大学学报:信息科学版,2018,43(5):684-690.
[9] 张朝忙,刘庆生,刘高焕.中国地区SRTM3 DEM高程精度质量评价[J].测绘工程,2014,23(4):14-19.
[10] 杜小平,郭华东,范湘涛.基于ICESat/GLAS数据的中国典型区域SRTM与ASTER GDEM高程精度评价[J].地球科学:中国地质大学学报,2013,38(4):887-897.
[11] 南希,李爱农,边金虎.典型山区SRTM3与ASTER GDEM数据精度对比分析:以青藏高原东麓深切河谷区为例[J].地球信息科学学报,2015,17(1):91-98.
[12] Feng L, Muller J P. Icesat validation of tandem-xi-dems over the UK[J]. International Archives of the Photogrammetry Remote Sensing & spatial Information Sciences,2016, 41:129-136.
[13] 艾建华.利用ICESAT/GLAS激光测高数据评估SRTM数据精度[J].测绘技术装备,2015,17(2):63-66.
[14] 刘学军,王叶飞,曹志东,等.基于DEM的地形曲率计算模型误差分析[J].测绘科学,2006,31(5):50-53.
[15] 李倩楠.基于不同算法的DEM地面曲率提取的比较分析[J].首都师范大学学报:自然科学版,2016,37(5):82-85.
[16] 赵鹏,张立朝,张文诗,等.一种利用地形曲率提取地形特征线算法[J].测绘科学技术学报,2014,31(1):13-17.
[17] 王劲峰,徐成东.地理探测器:原理与展望[J].地理学报,2017,72(1):116-134.
[18] Clarke K C. Computation of the fractal dimension of topographic surfaces using the triangular prism surface area method[J]. Computers & Geosciences, 1986,12(5):713-722.
[19] 周宏伟,谢和平, KW A SN IEW SK IM A,等.粗糙表面分维计算的立方体覆盖法[J].摩擦学学报,2000,20(6):455-459.

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