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Post-processed Precise Point Positioning: A viable alternative?


Grinter, T and Janssen, V, Post-processed Precise Point Positioning: A viable alternative?, Proceedings of the 17th Association of Public Authority Surveyors Conference (APAS2012), 19-21 March 2012, Wollongong, New South Wales (2012) [Non Refereed Conference Paper]


Copyright Statement

Copyright 2012 APAS


The concept of Precise Point Positioning (PPP) using Global Navigation Satellite System (GNSS) technology was first introduced in 1976. However, it took until the 1990s for PPP to generate interest amongst the greater GNSS community. Over the last two decades, dual-frequency PPP has been extensively researched, and several PPP online services and software packages have been developed. This research has shown that centimetre-level point positioning is achievable in post-processed static mode. However, several limitations still remain, primarily the long convergence times needed to resolve ambiguities, currently restricting the use of PPP for high-accuracy survey applications. With the advent of cost-effective and accurate post-processing PPP services provided by organisations such as the National Aeronautics and Space Administration (NASA) Jet Propulsion Laboratory (JPL), the International GNSS Service (IGS) and Natural Resources Canada (NRCan), PPP now offers centimetre-level point positioning from much smaller observation datasets. This study compares PPP results from 1-hour, 2-hour, 4-hour, 12-hour and 24-hour observation datasets using NRCan’s PPP online service against the official, Regulation 13-certified coordinates of twenty CORSnet-NSW sites across New South Wales. It is shown that post-processed PPP can provide a viable alternative to differential techniques for survey accuracy, static survey applications for observation spans of at least 4 hours.

Item Details

Item Type:Non Refereed Conference Paper
Keywords:Precise Point Positioning, GNSS, post processing, static, CORSnet-NSW
Research Division:Earth Sciences
Research Group:Geophysics
Research Field:Geodesy
Objective Division:Environmental Management
Objective Group:Other environmental management
Objective Field:Other environmental management not elsewhere classified
UTAS Author:Janssen, V (Dr Volker Janssen)
ID Code:77408
Year Published:2012
Deposited By:Geography and Environmental Studies
Deposited On:2012-04-11
Last Modified:2014-06-05
Downloads:250 View Download Statistics

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