Visibility and geometry of GLONASS constellation

• Autorzy: Januszewski J.

Identyfikatory

DOI

10.2478/v10018-009-0019-2

• Języki publikacji: EN

Abstrakty

EN

Nowadays there are two worldwide satellite navigation systems - American GPS, fully operational and Russian GLONASS, no fully operational. The number of GLONASS satellites is less than nominal 24; in June 2009 spatial segment consists of 20 satellites, 18 operational and 2 in maintenance. The number of GLONASS satellites visible in open and restricted area, the distributions (in per cent) of the Geometric Dilution of Precision (GDOP) coefficient values and No Fix (without 3D position) for different numbers of GLONASS satellites (interval [18, 24]), for different masking elevation angles (interval [0°, 25°]) at different observer’s latitudes (9 zones, each 10° wide), latitude of Poland (zone 50°-60°), in particular, are demonstrated in the paper. Additionally the detailed distributions of satellite azimuths (8 intervals, each 45° wide) and the percentage of satellite visible in open area above given angle at different latitudes for different numbers of satellites are showed. The knowledge of all these distributions are very important, especially after the publication of the U.S. Government report in which we can read that in 2010 the overall GPS constellation will fall below the number of satellites required the actual level of GPS position fix accuracy.

Słowa kluczowe

EN

GLONASS system; satellite visibility; GDOP distribution

• Wydawca: Centrum Badań Kosmicznych PAN ; De Gruyter
• Czasopismo: Artificial Satellites : Journal of Planetary Geodesy
• Rocznik: 2009
• Tom: Vol. 44, No. 2
• Strony: 53--65
• Opis fizyczny: Bibliogr. 8 poz., tab.

Twórcy

autor

Januszewski J.

• Gdynia Maritime University, Navigation Department al. JanaPawla II 3, 81-345 Gdynia, Poland

Bibliografia

• GPS Health in Question (2009), GPS World, vol.20, No.6, 8.
• Januszewski J. (1999). Visibility and Geometry of GPS and GLONASS, Annual of Navigation, No.1, 55-65.
• Januszewski J. (2000). Geometry of GPS and GLONASS for different number of operational satellites, Annual of Navigation, No.2, 47-56.
• Januszewski J. (2003). Visibility of Satellite Navigation Systems in Urban Area, Artificial Satellites, Vol. 41, No.2, 67-77.
• Januszewski J. (2006). GLONASS Status and Accuracy, Today and in the Future, XV International Scientific and Technical Conference, “The Role of Navigation in Support of Human Activity on the Sea”, Naval University, Gdynia.
• Revnivykh S.G. (2007) GLONASS Status, Development and Application, Second Meeting Global Navigation Satellite System, Bangladare.
• Revnivykh S.G. (2009). Status and Modernization of the Russian GLONASS System, Munich Satellite Navigation Summit, Munich.
• www.glonass-ianc.rsa.ru

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).