8

Im doing some mapping for OSM in my region and I am curious if the precision of tracks from a GPS Receiver can be improved if they are post processed with RINEX data.

The tracking is done with a Garmin GPSMAP 60CSX or alternatively my Android Phone and OSMTracker for Android.

The RINEX data is available from http://igs.bkg.bund.de/filestatus/dailyrinex

cheerio steve

  • what restrictions are with the RINEX data? OSM prefers first hand gps traces, corrections are usually after the upload to osm server. 'Many hands make light work' – Mapperz Feb 18 '11 at 15:07
5

To perform post-processing you typically need a GPS that can record raw pseudorange and carrier cycle data. Very few consumer level GPS support this functionality, and those that do require software modification. I am not sure about android, most likely it would depend on the GPS chip that the phone is using.

  • Could you say which ones do support this? – Kirk Kuykendall Mar 6 '12 at 3:04
  • None that I know of. According to this SiRFII based receivers did record some additional data. Some references exist to the Delorme Blue Logger also having some rinex ability, but not sure if this is still correct or officially supported. I would love to find a cheap device that supports RINEX. – Matthew Snape Mar 6 '12 at 13:24
2

Trimble produces a GPS Analyst extension for ArcGIS which can perform post-processing with RINEX data. On the open source side, it looks like GPSTk can be used.

1

This article lists Android devices that support raw GNSS measurements: https://developer.android.com/guide/topics/sensors/gnss.html

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