Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: tropospheric correction

Sortuj według:

Ogranicz wyniki do:

The impact of troposphere correction for designation of the ellipsoidal height of aircraft at approach to landing procedure

100%

Krasuski K. , Savchuk S.

Acta Mechanica et Automatica

2019

tom Vol. 13, no. 4

233--237

The paper reports on research into the effect of the troposphere correction on the accuracy of the vertical component determination of an aircraft's flight as it approaches landing at Deblin Airport. The article presents ellipsoidal height value of the aircraft when the troposphere correction is considered in navigational calculations and when it is not taken into account. Accuracy of the aircraft positioning in the vertical plane using the SPP method is determined. The study shows that application of the troposphere correction in navigational calculations increases the accuracy of the vertical component determination by 25%–32%. The article and the study may serve as a valuable source of information for pilots, flight instructors and aircraft crews during training in operation and implementation of GNSS in aviation.

Analysis of tropospheric contribution to GPS positioning error during tropospheric cyclone Marcus in 2018

63%

Sikirica N. , Horvat M. , Špoljar D. , Rumora I.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2020

tom Vol. 14, no. 2

343--348

GNSS positioning performance assessment is essential for sustainable development of a growing number of GNSS-based technology and socio-economic applications. Case-studies of GNSS positioning performance in critical environments and applications scenarios reveals vulnerabilities of the GNSS Positioning, Navigation, and Timing (PNT) services, and suggest mitigation techniques and GNSS application risk containment. Here we address the case of GPS positioning performance during a devastating tropical cyclone Marcus that hit the greater area of the city of Darwin, Australia in 2018. We identified specific statistical properties of time series of tropospheric contribution to GPS northing, easting, and vertical positioning error that may contribute to understanding of tropospheric effects on GPS positioning performance during a massive weather deterioration in maritime and coastal areas, and analysed their adversarial effects on GNSS-based maritime applications.

Propagacja fal radiowych w naziemnych i satelitarnych systemach nawigacyjnych

51%

Januszewski J.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

2012

tom nr 1

3-9

Sygnały emitowane przez satelity systemów nawigacyjnych (SSN) i systemów wspomagających (SBAS) na swej drodze do odbiornika użytkownika napotykają dwie warstwy atmosfery ziemskiej - jonosferę i troposferę. Omówiono wpływ tych warstw na określanie pozycji użytkownika i jej dokładność oraz podano szczegółowe informacje o poprawkach dotyczących jonosfery, które są przekazywane w depeszy nawigacyjnej satelitów systemów GPS, GLO-NASS, Galileo, OZSS i SBAS. Scharakteryzowano też sposoby propagacji sygnałów emitowanych przez stacje naziemnych systemów radionawigacyjnych, takich jak system Loran C.

The signals transmitted from the satellites of navigation systems (SNS) and augmentation systems (SBAS) on the way to the user's receiver propagate through the two Earth's atmosphere layers - ionosphere and troposphere. The influence of these layers on determination of the user's position and its accuracy and the detailed Information about corrections concerning ionosphere transmitted in the navigation message of GPS, GLONASS, Galileo, OZSS and SBAS satellites are presented in this paper. Additionally the ways of propagation of the signals transmitted from the stations of terrestrial radionavigation systems, as Loran C, are showed also.