Wyniki wyszukiwania - BazTech

Ograniczanie wyników

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

Powiadomienia systemowe

Sesja wygasła!

Znaleziono wyników: 4

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: Accuracy

Sortuj według:

Ogranicz wyniki do:

An Effect of Urban Development on the Accuracy of the GPS/EGNOS System

Bober R., Szewczuk T., Wolski A.

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

2008

Vol. 2, no. 3

235--238

This article presents the results of research into the accuracy of position determination by a GPS/EGNOS system in a densely built-up residential area. These results are compared with the relevant results obtained for a position in an open area.

Accuracy of Relative Navigation in Automated Systems of Data Communication

Dzunda M.

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

2008

Vol. 2, no. 2

161--163

The architecture of wide-band synchronous automated systems of data communication (ASDC) enables utilization of high accuracy measurement of the signal reception times to relative navigation in the network. In this contribution an operation analysis of such systems in the relative navigation mode is conducted. The accuracy and possibilities of the utilization of these systems were examined by modeling in air navigation.

Accuracy Analysis of the EGNOS System During Mobile Testing

Aguilar E. D., Jaworski L., Kolodziejczak M.

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

2008

Vol. 2, no. 1

37--41

The European Geostationary Navigation Overlay Service or EGNOS has been operational and broadcasting signals on PRN120 and PRN126 as of July 2006. EGNOS is designed to broadcast embedded correction signals in Europe which will provide improved performance with GPS. There are three EGNOS geostationary satellites PRN codes 120,124 and 126. The three satellites have positions 15.5 degrees west fro PRN 120, 25 degrees east and 21.5 degrees east for PRN’s 126 and 124. Satellite PRN124 is still in the test phase. The Space Research Centre has performed a mobile testing to demonstrate how EGNOS improves GPS accuracy. A mobile GPS laboratory was used to collect GPS data in the rural outskirts of Warsaw. Two receivers and one antenna were used to collect kinematic and navigation data. Post-processed GPS position and height deviations are compared to the solution given when GPS is augmented with EGNOS. The summarized results in this paper show that GPS augmented with EGNOS greatly improves position accuracy.

The Use of Estimation of Position Coordinates with Constraints in Navigation

Banachowicz A., Banachowicz G.

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

2007

Vol. 1, no. 1

89--92

This article presents method of estimation of position coordinates with the use of conditions imposed on measurements. The application of two (or more) systems used to define position and taking into account the way they are related, makes it possible to improve both accuracy and reliability of the measured navigational parameters. The method of estimation with constraints is based on the method of determining extremes with constraints of many variables. In geodesy, this method is known as adjustment by conditions.