Comments on: A Comparison of Free GPS Online Post-Processing Services https://www.gpsworld.com/a-comparison-of-free-gps-online-post-processing-services/ The Business and Technology of Global Navigation and Positioning Tue, 10 Mar 2015 15:22:17 +0000 hourly 1 https://wordpress.org/?v=5.9.7 By: Peadar https://www.gpsworld.com/a-comparison-of-free-gps-online-post-processing-services/#comment-382023 Tue, 10 Mar 2015 15:22:17 +0000 https://www.gpsworld.com/?p=24399#comment-382023 Any idea on settings required to replicate these results in RTKLIB static PPP solution. I get an almost constant difference (c. 15cm in Z) although my rtklib results are consistent over different 24 hour periods.

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By: Eric Gakstatter https://www.gpsworld.com/a-comparison-of-free-gps-online-post-processing-services/#comment-51458 Sat, 26 Apr 2014 07:14:13 +0000 https://www.gpsworld.com/?p=24399#comment-51458 In reply to baset.

Both OPUS and AUSPOS.

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By: baset https://www.gpsworld.com/a-comparison-of-free-gps-online-post-processing-services/#comment-49007 Thu, 24 Apr 2014 21:23:01 +0000 https://www.gpsworld.com/?p=24399#comment-49007 which one of Online Positioning User Service (OPUS) are suitable for location of Libya

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By: jn https://www.gpsworld.com/a-comparison-of-free-gps-online-post-processing-services/#comment-44305 Mon, 24 Mar 2014 08:14:40 +0000 https://www.gpsworld.com/?p=24399#comment-44305 Sorry, mistyped: by saying “GAPS” I meant Natural Resources Canada

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By: jn https://www.gpsworld.com/a-comparison-of-free-gps-online-post-processing-services/#comment-44303 Mon, 24 Mar 2014 07:55:31 +0000 https://www.gpsworld.com/?p=24399#comment-44303 CenterPointRTX and GAPS seems to give me very similar results when Auspos results are different.

CenterpointRTX and GAPS results are inside 0.015cm margin all the the time when AUSPOS results can be 30-90cm different 50% of the time.

Probably the reason comes from AUSPOS not able to process Glonass-data, when GAPS and CenterpointRTX are using Glonass as well.

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By: jn https://www.gpsworld.com/a-comparison-of-free-gps-online-post-processing-services/#comment-44301 Mon, 24 Mar 2014 07:47:15 +0000 https://www.gpsworld.com/?p=24399#comment-44301 One note what wasn’t clearly mentioned:
AUSPOS doesn’t process Glonass-data.

I have used all services and I like AUSPOS processing reports, but having no glonass-support I cannot use it.

My biggest problem is to get accurate orthometric heights using posprocessing services.
Any idea how to do that?

OPUS doesn’t work very well in Africa, because of lack of stations in Africa or Europe.

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By: Caleb https://www.gpsworld.com/a-comparison-of-free-gps-online-post-processing-services/#comment-40828 Fri, 24 Jan 2014 20:53:58 +0000 https://www.gpsworld.com/?p=24399#comment-40828 Thanks for breaking down the comparison. Great information.

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By: Ming https://www.gpsworld.com/a-comparison-of-free-gps-online-post-processing-services/#comment-39562 Mon, 06 Jan 2014 02:42:56 +0000 https://www.gpsworld.com/?p=24399#comment-39562 Hi Suraj

You can submit your data to our AUSPOS service using the website http://www.ga.gov.au/bin/gps.pl. AUSPOS will deliver a report to you, which includes very reliable coordinate uncertainties.

Kind regards

Dr Minghai Jia
AUSPOS Project Manager
Geoscience Australia

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