As a network transmission protocol, Networked Transport of RTCM via Internet Protocol (NTRIP) is widely used in GPS and Global Orbiting Navigational Satellite System (GLONASS) Augmentation systems, such as Continuous Operational Reference System (CORS), Wide Area Augmentation System (WAAS) and Satellite Based Augmentation Systems (SBAS). With the deployment of BeiDou Navigation Satellite system (BDS) to serve the Asia-Pacific region, there are increasing needs for ground monitoring of the BeiDou Navigation Satellite system and the development of the high-precision real-time BeiDou products. This paper aims to optimize the decoding algorithm of NTRIP Client data streams and the user authentication strategies of the NTRIP Caster based on NTRIP. The proposed method greatly enhances the handling efficiency and significantly reduces the data transmission delay compared with the Federal Agency for Cartography and Geodesy (BKG) NTRIP. Meanwhile, a transcoding method is proposed to facilitate the data transformation from the BINary EXchange (BINEX) format to the RTCM format. The transformation scheme thus solves the problem of handing real-time data streams from Trimble receivers in the BeiDou Navigation Satellite System indigenously developed by China.
[1]
Ronald L. Rivest,et al.
Introduction to Algorithms
,
1990
.
[2]
Luca Faust,et al.
Modern Operating Systems
,
2016
.
[3]
Du Ruilin.
Real-Time Precise Point Positioning Based on PANDA Software
,
2007
.
[4]
Gang Chen,et al.
Monitoring and assessment of GNSS Open Services
,
2011
.
[5]
Craig A. Knoblock,et al.
Advanced Programming in the UNIX Environment
,
1992,
Addison-Wesley professional computing series.
[6]
Ralph Johnson,et al.
design patterns elements of reusable object oriented software
,
2019
.
[7]
David Thomas,et al.
The Art in Computer Programming
,
2001
.
[8]
W. Richard Stevens,et al.
Unix network programming
,
1990,
CCRV.