Networked Transport of RTCM via Internet Protocol

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The Networked Transport of RTCM via Internet Protocol (NTRIP) is a protocol for streaming differential GPS (DGPS) corrections over the Internet for real-time kinematic positioning. NTRIP is a generic, stateless protocol based on the Hypertext Transfer Protocol HTTP/1.1 and is enhanced for GNSS data streams. [1]

The specification is standardized by the Radio Technical Commission for Maritime Services (RTCM). [2] NTRIP was developed by the German Federal Agency for Cartography and Geodesy (BKG) [3] and the Dortmund University Department of Computer Science. [4] Ntrip was released in September 2004. [5] The 2011 version of the protocol is version 2.0. [6]

NTRIP used to be [7] an open standard protocol but it is not available freely (as of 2020). There is an open source implementation available from software.rtcm-ntrip.org Archived 2020-08-11 at the Wayback Machine from where the protocol can be reverse-engineered.

References

  1. Lenz, Elmar (2004). "Networked Transport of RTCM via Internet Protocol (NTRIP) – Application and Benefit in Modern Surveying Systems" (PDF). FIG Working Week 2004. Archived (PDF) from the original on 2016-10-27. Retrieved 2018-02-27.
  2. "about NTRIP". Archived from the original on 19 May 2013. Retrieved 17 January 2012.
  3. BKG
  4. Uni Dortmund Archived 2012-01-02 at the Wayback Machine
  5. "RTCM Recommended Standards for Networked Transport of RTCM via Internet Protocol (Ntrip), Version 1.0" Archived 2006-10-24 at the Wayback Machine
  6. Version 2.0 with Amendment 1, June 28, 2011
  7. The "public version" of the protocol is missing all protocol details and examples, and refers to purchase the document from RTCM; it can be downloaded from BKG Archived 2006-10-24 at the Wayback Machine .