Results 11 to 20 of about 20,633,503 (274)

Zero-Reconvergence PPP for Real-Time Low-Earth Satellite Orbit Determination in Case of Data Interruption

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
With the fast development of low earth orbit (LEO) enhanced global navigation satellite system (LeGNSS), there is huge demand in LEO real-time precise orbit determination.
Haibo Ge, Guanlong Meng, Bofeng Li
doaj   +4 more sources

Real-Time Orbit Determination of Korean Navigation Satellite System based on Multi-GNSS Precise Point Positioning [PDF]

E3S Web of Conferences, 2019
This study proposes real-time orbit/clock determination of Korean Navigation Satellite System (KNSS), which employs the kinematic precise point positioning (PPP) solutions of multiple Global Navigation Satellite System (multi-GNSS) to compensate for ...
Kim Gimin, Oh Hyungjik, Park Chandeok, Seo Seungmo   +3 more
doaj   +4 more sources

Adaptive Kalman Filter for Real-Time Precise Orbit Determination of Low Earth Orbit Satellites Based on Pseudorange and Epoch-Differenced Carrier-Phase Measurements

Remote Sensing, 2022
Real-time precise orbit determination (POD) of low earth orbiters (LEOs) is crucial for orbit maintenance as well as autonomous operation for space missions.
Min Li, Tianhe Xu, Yali Shi, Kai Wei, Xianming Fei, Dixing Wang   +5 more
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TerraSAR-X precise orbit determination with real-time GPS ephemerides [PDF]

Advances in Space Research, 2012
Abstract For active and future Earth observation missions, the availability of near real-time precise orbit information is becoming more and more important. The latency and quality of precise orbit determination results is mainly driven by the availability of precise GPS ephemerides and clocks. In order to have high-quality GPS ephemerides and clocks
Wermuth, Martin, Hauschild, André, Montenbruck, Oliver, Kahle, Ralph   +3 more
openaire   +4 more sources

Real-Time On-Orbit Estimation Method for Microthruster Thrust Based on High-Precision Orbit Determination

International Journal of Aerospace Engineering, 2021
In order to enable the micro-nanosatellites equipped with microthrusters to better complete various space applications, it is necessary to estimate the thrust performance of the microthrusters in real-time on orbit. This paper proposes a real-time on-orbit estimation method for microthrust based on high-precision orbit determination.
Qinglin Yang, Weijing Zhou, Hao Chang
openaire   +3 more sources

Real-Time LEO Satellite Orbits Based on Batch Least-Squares Orbit Determination with Short-Term Orbit Prediction [PDF]

Remote Sensing, 2022
The augmentation of the Global Navigation Satellite System (GNSS) by Low Earth Orbit (LEO) satellites is proposed as an effective method to improve the precision and shorten the convergence time of Precise Point Positioning (PPP).
Kan Wang, Jiawei Liu, Hang Su, Ahmed El-Mowafy, Xuhai Yang   +4 more
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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

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, Yunbin Yuan, Baocheng Zhang, Bingfeng Tan, Jikun Ou   +4 more
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Real‐time precise orbit determination for FY‐3C and FY‐3D based on BDS and GPS onboard observation

IET Radar, Sonar & Navigation, 2023
Abstract The code multipath error associated with elevation in BDS‐2 is one of the main factors whose impact on the precision of real‐time reduced‐dynamic precise orbit determination (POD) using spaceborne multi‐global navigation satellite systems (GNSS) observation data for FengYun‐3C (FY‐3C) and FengYun‐3D (FY‐3D) satellites.
Zhiyu Wang, Liang Wang, Zishen Li, Mainul Hoque, Ningbo Wang, Dongyan Wei, Hong Yuan   +6 more
openaire   +3 more sources

GRACE-FO Real-Time Precise Orbit Determination Using Onboard GPS and Inter-Satellite Ranging Measurements with Quality Control Strategy

Remote Sensing
Real-Time Precise Orbit Determination (RTPOD) of Low Earth Orbit (LEO) satellites relies primarily on onboard GNSS observations and may suffer from degraded performance when observation geometry weakens or tracking conditions deteriorate within satellite
Shengjian Zhong, Xiaoya Wang, Min Li, Jungang Wang, Peng Luo, Yabo Li, Houxiang Zhou   +6 more
doaj   +2 more sources

Multi-GNSS products and services at iGMAS Wuhan Innovation Application Center: strategy and evaluation

Satellite Navigation, 2022
Over the past years the International Global Navigation Satellite System (GNSS) Monitoring and Assessment System (iGMAS) Wuhan Innovation Application Center (IAC) dedicated to exploring the potential of multi-GNSS signals and providing a set of products ...
Xingxing Li, Qingyun Wang, Jiaqi Wu, Yongqiang Yuan, Yun Xiong, Xuewen Gong, Zhilu Wu   +6 more
doaj   +1 more source