...There are some GPS-Algorithms running in the Background which transform the GPS data in different coordinate frames.
The Stream via WLAN uses the User Datagram Protocol (UDP) Interface.
In order to receive the data you can use something like the Java File "QuoteClient"in the Files-Section.
Lets you monitor your GPS-phone. You have full control of your own data. Both client software (for phones) and server software is free open source, so you might set up your own server or use the default one at opengeotracker.org