Campaign Surveys - How to obtain high-confidence coordinates for a base station

Campaign Surveys - How to obtain high-confidence coordinates for a base station

There are two main ways to obtain high-confidence coordinates for a GNSS base station: Process data from the site relative to other high-confidence static sites, or submit site data to an online point positioning service. If your new base site is within 50 km of a reference site and you have collected several hours of data, it is best to process the site data yourself using e.g. Trimble Geomatics Office (see How to process fast-static and post-processing kinematic surveys using TGO). Otherwise, to obtain a position to within several cm of a static point where a very accurate position is not needed, submit site data to one of the following online services.

  • CSRS-PPP     http://www.geod.nrcan.gc.ca/products-produits/ppp_e.php
    CSRS PPP (Canadian Spatial Reference System - Precise Point Positioning) is a flexible service which offers both static and kinematic data processing. Access to the database is free but requires a username and password. Data files can be uploaded directly to the site.

  • OPUS            http://www.ngs.noaa.gov/OPUS/
    A data file of at least two hours is recommended. Data files can be uploaded directly to the site.

  • AusPos          http://www.ga.gov.au/geodesy/sgc/wwwgps/
    Data files can be uploaded directly to the site.

  • APPS             http://apps.gdgps.net/
    A JPL service that replaces AutoGIPSY. Data files can be uploaded directly to the site.

 

bab2010

Posted by: - Tue, Jan 26, 2010 at 7:27 PM. This article has been viewed 14580 times.
Online URL: https://kb.unavco.org/kb/article/campaign-surveys-how-to-obtain-high-confidence-coordinates-for-a-base-station-614.html