Dec 7, 2021 from 11:00 AM to 12:00 PM (ET)

Associated with UESI Surveying and Geomatics Division Virtual Series

This webinar presents the accuracies and precisions coming from a semester-long field study of real-time global navigation satellite system (GNSS) positioning. The data were collected by students in a surveying class under the supervision of the presenter of the webinar, so the results reflect those obtained by operators with very little experience in an area dominated by mature, leaf-on, broadleaf trees, so something towards a “worst case” scenario. Observations were collected with a Leica Viva GNSS receiver mounted atop a 2-m range pole. Students observed a collection of brass-cap survey markers established on the Storrs campus of the University of Connecticut. The markers were also observed using a 7-arcsecond total station for checks and comparisons. The webinar will present the study area and then the results as seen from various perspectives for different emphases, such as the effect of redundant observations and independence of observations. Despite the inexperience of the observers, centimeter-accuracy results were obtained when enough independent, real-time position were averaged together. The webinar will discuss how real-time observation are (or are not) independent, and present and discuss the results of the study, which are intended to reflect the sort of results practitioners could expect under similar conditions.

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