Data transport network in RTCM format, via Internet protocol (Ntrip). Implementation in the region and future projection through SIRGAS

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Published: Oct 3, 2019
DOI: https://doi.org/10.35424/rcarto.i89.495
Keywords:
GNSS, CORS, redes CORS, Ntrip, VRS, Caster, Tiempo-Real, RTK, PPP-RTK, Positioning, Differentials Corrections

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Norbertino Suárez Silva
Servicio Geográfico Militar de Uruguay
Roberto Pérez Rodino
Instituto de Agrimensura de la Facultad de Ingeniería de Uruguay (UDELAR)
Ricardo Yelicich Peláez
Instituto de Agrimensura de la Facultad de Ingeniería (UDELAR)

Abstract

The CORS (Continuously Operating Reference Station), use the GNSS (Global Positioning Satellite Systems) to determinate a high precision point by the observa- tion of the available satellite constellations (GPS, GLONNAS, and the future Gali- leo and Compass/BeiDou). Using a technique called Differential Correction, is possible to eliminate almost completely the influence of the errors produced by the GNSS signals or induced errors. The Differential Correction methods (DGNSS) Post-Process or Real-Time are the most widely used methods. There are other solu- tion type called PPP (Precise Point Positioning), and recently have been presented some progress on PPP in Real-Time: PPP-RTK by different satellites Geodetic Research Agency 


The Differential Corrections may be obtained directly from a GNSS receiver or from CORS or from a network CORS, all connected to a Server-Caster via Internet. 
The customers (rover receiver) use mobile phone technology (GSM, GPRS, EDGE, UMTS), a client software to access the Caster IP address, and Ntrip (Net- work Transport of RTCM data via Protocol Internet) to Differential Correction data for GNSS rover receiver. Ntrip is based on HTTP (HyperText Transfer Protocol) and has the ability to transmit any GNSS data through RTCM (Radio Technical Commission for Mariti- me Services) messages or raw data. 
During the SIRGAS (Geocentric Reference System for the Americas) meeting in Montevideo-Uruguay, in May 2008, the Working Group SIRGAS-RT was estab- lished in order to evaluate and promote Ntrip development and research. So far have been implemented Casters-Ntrip Servers in Argentina, Brazil, Venezuela and Uruguay, with significant results. Currently SIRGAS-RT is working on regional developments that including neighboring countries CORS networks. Argentina and Uruguay have installed some Experimental Casters-SIRGAS for research and re- gional technology evaluation. 


 


 


 

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How to Cite
Suárez Silva, N., Pérez Rodino, R., & Yelicich Peláez, R. (2019). Data transport network in RTCM format, via Internet protocol (Ntrip). Implementation in the region and future projection through SIRGAS. Revista Cartográfica, (89), 165–187. https://doi.org/10.35424/rcarto.i89.495
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No. 89 (2013): Revista Cartográfica N° 89 (enero-diciembre 2013) Editor: Dr. Hermann Manríquez Tirado
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