Results 11 to 20 of about 163,832 (185)
COMPARISON OF GPS SATELLITE COORDINATES COMPUTED FROM BROADCAST AND IGS FINAL EPHEMERIDES
International Journal of Engineering and Geosciences, 2017 There are mainly two different orbital information, namely broadcast ephemerides and IGS final ephemerides (IGS rapid, ultra rapid, predicted and final ephemerides) used in the GPS positioning. The broadcast ephemerides used in practice and real time are obtained through assessments derived from the observations from the USA GPS reference stations ...
Ekrem Tuşat, Fethi Ozyuksel
semanticscholar +5 more sources
Computer Modeling in Engineering & Sciences, 2019 Abnormal effects in GPS broadcast ephemerides can have a significant effect on real-time navigation and positioning solutions that use the orbit and clock error data provided by GPS broadcast ephemerides. This paper describes three types of non-integer-hour navigation data in GPS broadcast ephemeris data.
Zhangzhen Sun +4 more
semanticscholar +3 more sources
ASSESSING EFFICIENCY OF GPS EPHEMERIDES IN DIFFERENT REGION USING PRECISE POINT POSITIONING [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 Precise Point Positioning (PPP) is a technique that process Global Positioning System (GPS) observation that can achieve sub-decimetre accuracy. Precise ephemerides that contain satellite clock and position plays a vital role in minimising orbital and ...
H. S. Lee +3 more
doaj +2 more sources
Effect of using different satellite ephemerides on GPS PPP and post processing techniques
Geodesy and Cartography, 2021 The orbital error is one of the errors in GPS which affect the accuracy of GPS positioning. In this research GPS broadcast, ultra-rapid, rapid and precise satellite ephemerides are used for processing different baseline lengths among some CORS stations ...
Khaled Mahmoud Abdel Aziz +1 more
doaj +2 more sources
Space State Representation Product Evaluation in Satellite Position and Receiver Position Domain [PDF]
Sensors, 2020 In Global Navigation Satellite Systems (GNSS) positioning, important terms in error budget are satellite orbits and satellite clocks correction errors. International services are developing and providing models and correction to minimize the influence of
Renata Pelc-Mieczkowska +1 more
doaj +2 more sources
Satellite Navigation, 2023 Previous studies have not evaluated the systematic errors implied in the third generation of BeiDou-3 Navigation Satellite System (BDS-3) broadcast ephemeris.
Min Li +4 more
doaj +2 more sources
Precise Positioning with Broadcast Ephemerides [PDF]
, 2021 Oliver Montenbruck +2 more
openalex +2 more sources
Satellite NavigationBy leveraging the high-precision spatial reference established with Global Navigation Satellite System (GNSS), we propose a low-ground-dependency and low-latency Precise Orbit Determination (POD) method employing onboard GNSS, Inter-Satellite Link (ISL ...
Geer Qin +8 more
doaj +2 more sources
Remote SensingThe performance of Precise Point Positioning (PPP) using different Global Navigation Satellite System (GNSS) product sets, including broadcast ephemerides, International GNSS Service Real-Time Service (IGS-RTS) corrections, Galileo High Accuracy Service (
Damian Kiliszek
doaj +2 more sources
Mobile laser scanning elevation data accuracy in closed and partially open sky area
Geodesy and Cartography, 2021 Mobile laser scanning is being used more often in Estonia and abroad to obtain geospatial information. As the system is still new and being upgraded, different methods are being used to find out how accurately the mobile laser scanner can measure in ...
Gerly Annok, Valdar Tammin, Natalja Liba
doaj +1 more source