Author :
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (227 download)
Book Synopsis Elevation Determination by Using GPS. by :
Download or read book Elevation Determination by Using GPS. written by and published by . This book was released on 1994 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Positioning System (GPS), when used in a differential mode, can be used to obtain very accurate heights relative to an ellipsoid. Questions have been raised as to how accurate GPS can be used to obtain elevations based on the geoid. Several field techniques (i.e. local geoid modeling) as well as geoid modeling software have been developed in order to use GPS to obtain elevations based on the geoid. This paper will present analysis and results of testing performed by running a level loop with Differential GPS (DGPS) and conventional spirit leveling. The testing was performed in Alexandria, VA on 16 & 18 May 1994 by members of the Surveying Division of the Topographic Engineering Center. Global positioning system, Surveying, Differential GPS, Rapid static, Short occupation times of 5-20 minutes per station.