西南林业大学学报Issue(2)：72-77,6.DOI:10.3969/j.issn.2095-1914.2014.02.014
玲珑山及其周边地区SRTM3和ASTER GDEM高程精度评价
Accuracy Assessment on Elevation of Linglong Mountain and Its Surrounding Areas Simulated by SRTM3 and ASTER GDEM Models
摘要
Abstract
Choosing Linglong Mountain with varied relief and its surrounding areas as the experimental zone, the accuracy of elevation simulated by two types of free digital elevation model (DEM)including Shuttle Radar To-pography Mission 3 (SRTM3)and the Advanced Spaceborne Thermal Emission and Reflection Radiometer Global Digital Elevation Model (ASTER GDEM)was analyzed by means of applying two quantitative evaluation methods, namely the root mean square errors (RMSE)and the accumulation products (AP),and one subjective evaluation method,i.e.visual inspection of reconstructing contours through DEMto testify the application of DEMto small re-gions in forestry sector.The results showed that forest cover in the experimental zone had some influence on eleva-tion accuracy simulated by DEM,the value of RMSE and AP by SRTM3 was 1 1.534 m and 0.177,whereas the value of RMSE and AP by ASTER GDEMwas 10.459 m and 0.166,respectively.Though the accuracy of elevation simulated by both SRTM3 and ASTER GDEM in the study area met the demand published officially,the elevation accuracy of ASTER GDEM was higher than that of SRTM3.The results from the visual inspection of reconstructing contours through DEM suggested that the contours extracted by SRTM3 and ASTER could better describe the practi-cal status of the low mountainous terrain in the experimental area,but the interpretation for the river valley or plain area was not so precise,and the deflection of contours derived from SRTM3 was a bit larger than that of derived from ASTER GDEM.Comprehensively concluding that the data from ASTER GDEM were preferably recommended apply to Linglong Mountain and its surrounding areas to simulate the elevation contour.关键词
ASTER GDEM/SRTM3/高程精度/森林覆盖/低山丘陵Key words
ASTER GDEM/SRTM3/elevation accuracy/forest cover/low mountains and hills分类
农业科技引用本文复制引用
吴建强,王懿祥,杨峪,杨一..玲珑山及其周边地区SRTM3和ASTER GDEM高程精度评价[J].西南林业大学学报,2014,(2):72-77,6.基金项目
国家“十二五”科技支撑项目（2012BAD22B0503）资助；浙江省重点科技创新团队项目（2010R50030）资助。 （）
