A long‐term broadcast ephemeris model for extended operation of GNSS satellites [PDF]
NAVIGATION, 2020 GNSS positioning relies on orbit and clock information, which is predicted on ground and transmitted by the individual satellites as part of their broadcast navigation message. The predictions are typically refreshed at least once per day and partitioned into short-arc ephemeris data sets covering a representative validity period of 0.5-4 h.
Oliver Montenbruck +2 more
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A Smart Realtime Service to Broadcast the Precise Orbits of GPS Satellite and Its Performance on Precise Point Positioning [PDF]
Sensors, 2020 At present, Global Position System (GPS) navigation ephemeris mainly broadcasts satellite orbits with meter-level precision for standard point positioning and precise relative positioning. With the rapid development of real-time precise point positioning
Dehai Li +5 more
doaj +2 more sources
IRNSS Orbit Determination and Broadcast Ephemeris Assessment [PDF]
, 2015 The Indian Regional Navigation Satellite System (IRNSS) is an emerging satellite based navigation system offering an independent positioning and timing service over India and neighboring regions. Based on satellite laser ranging data collected by selected stations of the International Laser Ranging Service (ILRS) precise orbits have been determined for
Oliver Montenbruck +2 more
openalex +3 more sources
Analysis and Assessment of BDS-2 and BDS-3 Broadcast Ephemeris: Accuracy, the Datum of Broadcast Clocks and Its Impact on Single Point Positioning [PDF]
Remote Sensing, 2020 For the global ordinary users, the broadcast ephemeris plays important roles in positioning, navigation and timing (PNT) services. With the construction of a new generation of the BeiDou navigation satellite system (BDS), the development of BDS has ...
Guoqiang Jiao +5 more
doaj +2 more sources
Estimating Satellite Navigation Broadcast Ephemeris via Inter-Satellite and Ground-to-Satellite Ranging [PDF]
Engineering Proceedings, 2023 This paper investigates the potential of performing orbit determination directly in the Earth-fixed frame based on Inter-Satellite Ranging (ISR) measurements as primary observables, combined with Ground-to-Satellite Ranging (GSR) measurements from a ...
Andrea Testa +4 more
doaj +2 more sources
Study on the Design of Broadcast Ephemeris Parameters for Low Earth Orbit Satellites [PDF]
Remote SensingThe integration of low Earth orbit (LEO) satellite constellations into the Global Navigation Satellite System (GNSS) has emerged as a prominent research focus, as LEO satellites can significantly enhance the precision of GNSS positioning, navigation, and
Dongzhu Liu +4 more
doaj +2 more sources
Real-Time Detection of Orbital Maneuvers Using Epoch-Differenced Carrier Phase Observations and Broadcast Ephemeris Data: A Case Study of the BDS Dataset. [PDF]
Sensors (Basel), 2020 Tu R +5 more
europepmc +3 more sources
Analysis of Post-Processed Pseudorange-Based Point Positioning with Different Data Sources for the Current Galileo Constellations [PDF]
SensorsThe Galileo satellite navigation system now provides initial services. With further satellite launches, the performance of Galileo will gradually improve, and new services will be introduced. This study aims to provide a comprehensive analysis of Galileo
Jiantao Zhang, Weiwei Li
doaj +2 more sources
Accuracy Evaluation of Broadcast Ephemeris for BDS-2 and BDS-3 [PDF]
, 2021 Abstract The BDS-3 system was completed in July 2020 and began to provide services to users around the world. The inspection of its operation, especially the detailed evaluation of the orbit, clock error, TGD and other indicators, plays an important role in the subsequent positioning.
Hao Jun Jian, Yishi Wang, Shoujian Zhang
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A Three-Step Method for Determining Unhealthy Time Period of GPS Satellite Orbit in Broadcast Ephemeris and Its Preliminary Applications for Precise Orbit Determination [PDF]
Remote Sensing, 2019 Abnormal information of satellite orbits inevitably appears in the broadcast ephemeris. Failure to obtain unhealthy information on GPS satellite orbits in precise orbit determination (POD) degrades GPS service performance.
Fei Ye +4 more
doaj +2 more sources