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Automated location correction and spot height generation for named summits in the coterminous United States

International Journal of Digital Earth 2020年第12期13卷 1570-1584页

作者： samantha t.arundel Gaurav Sinha U.S.Geological Survey Center of Excellence for Geospatial Information ScienceRollaMOUSA Department of Geography Ohio UniversityAthensOHUSA

Spot elevations published on historical *** Survey topographic maps were established as needed to enhance information imparted by the quadrangle’s *** addition to other features,labels were routinely placed on mountain *** some elevations were established through field survey triangulation,many were computed during photogrammetric ***,Global Navigation Satellite System(GNSS)receivers have replaced expensive triangulation ***,since GNSS measurements require visiting the feature location,a national dataset containing high-accuracy spot elevations has not yet been ***,modern *** maps are devoid of mountain peak or other spot ***,topographic map users continue to demand the display of spot ***,a pilot study was conducted to evaluate the feasibility of automatically generating elevation values at named *** using available elevation *** devised method uses an uphill stepping technique to find the most likely highest point in subsequently higher-resolution elevation *** elevation values are compared to other published *** from 196 summits indicate that values derived from lidar are generally higher,whereas those populated from the one-third arcsecond USGS Seamless 3DEP elevation dataset are generally lower.A thorough understanding of these relationships require the evaluation of more points.

关键词： Spot height summits 3D elevation program geographic names

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