On Egnos Monitoring in Local Conditions

Open access

ABSTRACT

Any SBAS system should deliver to the user corrections to pseudoranges as well as information about the system integrity. In theory, as soon as the system is permanently monitored by RIMS stations, it is impossible to deliver the fault information to the user. However many observations shows that accuracy of EGNOS service in the same time are different in different places, which shows the influence of local conditions on them. In addition evidences on possibilities in jamming or spoofing of GPS signals should be seriously taken into account. According to many sources of information, among them observations of authors, present accuracy of EGNOS service has better than declared. In fact EGNOS accuracy is about 1,5m (95%), but availability of the service happens still controversial and it has random character. According to reports essential differences as well as lack of correlation of this parameter in the different point of observations has been observed. So in author’s opinion Local Monitoring of EGNOS service can contribute to better confidence of local users, especially in critical operations, like for example berthing of big ships or in landing operations with EGNOS procedures. An example of such system which works in real time has been elaborated in Polish Naval Academy and will be presented.

EGNOS SOLSDD (2011), EGNOS Safety of Life Service Definition Document, European Commission, Directorate-General for Enterprise and Industry.

EGNOS SDDOS (2009), EGNOS Service Definition Document Open Service, European Commission Directorate-General for Energy and Transport.

EGNOS - A Cornerstone of Galileo (2007), SP-1303. ESA.

Federal Radionavigation Plan (2008), National Technical Information Service, Springfield. DOT-VNTSC-RITA-08-02/DoD-4650.5.

Felski A., Nowak A., Woźniak T. (2011), Accuracy and Availability of EGNOS - Results ofObservations. Artificial Satellites vol. 46 no. 3/2011 pp. 111-118.

Mięsikowski M., Nowak A., Oszczak B., Specht C. (2006), EGNOS - Accuracy Performance inPoland, Annual of Navigation, No 11/06, pp. 63-72

Web sites:

Web-1: http://www.esa.int/esaNA/egnos.html, consulted 01 September 2012.

Web-2: http://www.esa.int/esaNA/SEMNX8NXDXG_egnos_0.html, consulted 01 September 2012.

Artificial Satellites

The Journal of Space Research Centre of Polish Academy of Sciences

Journal Information


CiteScore 2018: 0.61

SCImago Journal Rank (SJR) 2018: 0.211
Source Normalized Impact per Paper (SNIP) 2018: 0.728

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