The Feasibility of Replacing Precise Levelling with GPS for Permafrost Deformation Monitoring

• Main Authors: Matthew Tait, Li Sheng, Elizabeth Cannon, Matthew Tait Li Sheng
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Key words; GPS levelling; Arctic environment; satellite geometry; path delays; error analysis; Arctic; Canada; Tait; permafrost
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.531.8863

This paper describes experiments to determine the best field and processing strategies that can be employed in carrier-phase differential GPS levelling in the permafrost Arctic region of Canada (70 ° north). Errors in phase-centre correction and multipath effects are examined in common with other studies in engineering measurement applications. In addition, the balance between residual noise and poor geometry in this high latitude is investigated in periods of both high and low ionospheric activity. An external accuracy assessment is made of the results. Recommended field and processing strategies for DGPS levelling in Arctic Canada are given. TS6 – GPS Measurement and Application Matthew Tait, Li Sheng, and Elizabeth Cannon