Results 31 to 40 of about 6,687 (290)

GSTAR: an innovative software platform for processing space geodetic data at the observation level

open access: yesSatellite Navigation, 2023
To meet the demands for the data combination with multiple space geodetic techniques at the observation level, we developed a new software platform with high extensibility and computation efficiency, named space Geodetic SpatioTemporal data Analysis and ...
Chuang Shi   +11 more
doaj   +1 more source

BDS Orbit Maneuver Detection Based on Epoch-Updated Orbits Estimated by SRIF

open access: yesRemote Sensing, 2023
The orbit maneuver detection is crucial in Global Navigation Satellite System (GNSS) precise orbit determination, which is necessary for adjusting data processing strategies.
Zhiwei Qin   +5 more
doaj   +1 more source

Relative Navigation to Non-Cooperative Targets in LEO: Achievable Accuracy from Radar Tracking Measurements [PDF]

open access: yes, 2013
Any future space debris removal or on-orbit servicing mission faces the problem of the initial relative orbit determination of the servicing satellite to the non-cooperative target.
Letsch, Klemens   +5 more
core   +1 more source

LEO Enhanced Global Navigation Satellite System (LeGNSS): progress, opportunities, and challenges

open access: yesGeo-spatial Information Science, 2021
With the completion of Chinese BeiDou Navigation Satellite System (BDS), the world has begun to enjoy the Positioning, Navigation, and Timing (PNT) services of four Global Navigation Satellite Systems (GNSS).
Haibo Ge   +8 more
doaj   +1 more source

Satellite Positioning and Orbit Determination System (SPODS): Introduction and Evaluation [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2018
The Satellite Positioning and Orbit Determination System (SPODS) is a software package for GNSS positioning/orbit determination, developed by the Xi’an Research Institute of Surveying and Mapping.
Ziqing WEI,Rengui RUAN,Xiaolin JIA,Xianbing WU,Xiaoyong SONG,Yue MAO,Laiping FENG,Yongxing ZHU
doaj  

GNSS-based precise orbit determination for maneuvering LEO satellites [PDF]

open access: yes, 2023
Maneuverability is essential for low Earth orbit (LEO) satellites to fulfill various operational objectives. However, the pre- cise orbit determination (POD) process might deteriorate due to imperfect satellite orbital dynamics modeling.
Arnold, Daniel   +9 more
core   +1 more source

Precise Orbit Determination of GPS-36 Satellite Using Satellite Laser Ranging [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2002
Satellite laser ranging is a technique for precisely measuring the range between a laser station and a satellite that is equipped with retro-reflectors. SLR technique was first used for Beacon-B satellite in 1964 with the ranging accuracy of meter level.
Hyung-Chul Lim   +4 more
doaj   +1 more source

LEO-Constellation-Augmented BDS Precise Orbit Determination Considering Spaceborne Observational Errors

open access: yesRemote Sensing, 2021
The precise orbit determination (POD) accuracy of the Chinese BeiDou Navigation Satellite System (BDS) is still not comparable to that of the Global Positioning System because of the unfavorable geometry of the BDS and the uneven distribution of BDS ...
Min Li   +6 more
doaj   +1 more source

LEO Satellite Clock Modeling and Its Benefits for LEO Kinematic POD

open access: yesRemote Sensing, 2023
High-accuracy Low Earth Orbit (LEO) satellite clock and orbital products are preconditions to realize LEO augmentation for high-accuracy GNSS-based positioning on the ground.
Kan Wang, Ahmed El-Mowafy, Xuhai Yang
doaj   +1 more source

Zero-difference and single-difference precise orbit determination for LEO using GPS [PDF]

open access: yes, 2007
Various methods for precise orbit determination (POD) of low earth orbiters (LEO) are briefly introduced in this paper. Based on the software named SHORD-III developed by our institute, single-difference (SD) and zero-difference (ZD) dynamic POD based on
Wu Bin, Peng DongJu
core   +1 more source

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