Networked Transport of RTCM via Internet Protocol

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Networked Transport of RTCM via Internet Protocol ( Ntrip ) is the name of a method for distributing differential GPS data (DGPS) over the Internet , which has meanwhile been standardized by the Radio Technical Commission for Maritime Services (RTCM) . Ntrip was released in September 2004 as "RTCM Recommended Standards for Networked Transport of RTCM via Internet Protocol (Ntrip), Version 1.0". Although originally intended only as a means of transporting RTCM (a DGPS format), the format is now used for a wide variety of navigation-related data.

Ntrip is based on the Hypertext Transfer Protocol HTTP / 1.1 and thus allows relatively easy use even in very restrictive network segments ( intranet , firewall , ...). The simplicity of the protocol and the disclosure of the program source code have led to widespread acceptance. Ntrip was developed by the German Federal Agency for Cartography and Geodesy (BKG, Frankfurt am Main ) and the Informatik Centrum Dortmund .

The data transfer of DGPS corrections and other geodetic data over the Internet gradually solves other methods, such as B. RASANT . One of the main reasons for this is the high level of flexibility combined with falling costs (especially in the mobile communications sector).

According to the resolution of the Spatial Reference Working Group of the German Working Group of Land Surveying Administrations (AdV), the spelling is no longer “NTRIP” but “Ntrip”.

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