The GPS Dancer software  turns your GPS reference station into a single-receiver analysis centre.

The software has been implemented over the period 2009 - 2012 as a voluntary project of an IAG Working Group, by a small group of experts and anybody who could and would contribute. By the time of this writing (late 2012) there are several Dancer peers on-line. The short-term objective is to build up the network of Dancer peers for all GPS reference stations in the formal ITRF.

You can already give Dancer a try, just to see what it is all about. Please refer to the description of the test campaign to find out more details about the current testing activities.

The GPS Dancer software is available for free from this site. You "pay" enough by maintaining one of the reference frame datum points with your process, and by implicitly enabling global peer-to-peer solutions. Without your process, the GPS Dancer system cannot work. Without the other GPS Dancer processes on the internet, your own process cannot work. Dancer is a pure peer-to-peer system that only makes sense in the form of a global network.

For the computation of global products (satellite orbits, satellite clocks and Earth rotation parameters) your local peer process works together with all other Dancer processes in the world. For the rest it is perfectly autonomous. The only information that is shared with other peers consists of

  • your unique 4-letter RINEX acronym
  • your position coordinate time series
  • lump-sum vector averages that can not be reverse-engineered into receiver specific information

Your a priori station coordinates are known to all other Dancer peers, because this information is needed to construct a proper reference frame (for instance, to allow integer ambiguity resolution, and to allow alignment to the formal ITRF solution). However, this information is not an output of the software, as you can easily verify yourself. Dancer respects the privacy of all network operators.

To download and install the software on your own computer system, look here.

Project details

Ultimate Browsers SupportThe GPS Dancer project started in 2007 as a voluntary project of a working group of the International Association of Geodesy.

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Square dance algorithm

Great Docs and SupportThe GPS Dancer system was named after its "square dance" exchange algorithm. Of course, it also wants to to make the GPS reference frame denser.


Here, there be pirates

The Dancer on-line network became immune against internet connection problems by leaving the US marines, and becoming a pirate.

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