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Real-Time Precise Orbit Determination for LEO between Kinematic and Reduced-Dynamic with Ambiguity Resolution

Wang, Zhiyu and Li, Zishen and Wang, Ningbo and Hoque, Mohammed Mainul and Wang, Liang and Li, Ran and Zhang, Yang and Yuan, Hong (2022) Real-Time Precise Orbit Determination for LEO between Kinematic and Reduced-Dynamic with Ambiguity Resolution. Aerospace. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/aerospace9010025. ISSN 2226-4310.

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Official URL: https://www.mdpi.com/2226-4310/9/1/25


The real-time integer-ambiguity resolution of the carrier-phase observation is one of the most effective approaches to enhance the accuracy of real-time precise point positioning (PPP), kinematic precise orbit determination (KPOD), and reduced-dynamic precise orbit determination (RPOD) for low earth orbit (LEO) satellites. In this study, the integer phase clock (IPC) and wide-lane satellite bias (WSB) products from CNES (Centre National d’Etudes Spatiales) are used to fix ambiguity in real time. Meanwhile, the three models of real-time PPP, KPOD, and RPOD are applied to validate the contribution of ambiguity resolution. Experimental results show that (1) the average positioning accuracy of IGS stations for ambiguity-fixed solutions is improved from about 7.14 to 5.91 cm, with an improvement of around 17% compared to the real-time float PPP solutions, with enhancement in the east-west direction particularly significant, with an improvement of about 29%; (2) the average accuracy of the estimated LEO orbit with ambiguity-fixed solutions in the real-time KPOD and RPOD mode is improved by about 16% and 10%, respectively, with respect to the corresponding mode with the ambiguity-float solutions; (3) the performance of real-time LEO RPOD is better than that of the corresponding KPOD, regardless of fixed- or float-ambiguity solutions. Moreover, the average ambiguity-fixed ratio can reach more than 90% in real-time PPP, KPOD, and RPOD

Item URL in elib:https://elib.dlr.de/189042/
Document Type:Article
Title:Real-Time Precise Orbit Determination for LEO between Kinematic and Reduced-Dynamic with Ambiguity Resolution
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wang, Zhiyuwangzy (at) aircas.ac.cnUNSPECIFIED
Li, Zishenlizishen (at) aircas.ac.cnUNSPECIFIED
Wang, Ningbowangningbo (at) aoe.ac.cnUNSPECIFIED
Hoque, Mohammed MainulMainul.Hoque (at) dlr.deUNSPECIFIED
Wang, Liangwangliang (at) aircas.ac.cnUNSPECIFIED
Li, Ranliran (at) aircas.ac.cnUNSPECIFIED
Yuan, Hongyuanhong (at) aircas.ac.cnUNSPECIFIED
Journal or Publication Title:Aerospace
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:real-time; ambiguity resolution; low earth orbit; precise point positioning; kinematic precise orbit determination; reduced-dynamic precise orbit determination
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Solar-Terrestrial Physics SO
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Space Weather Observation
Deposited By: Hoque, Mohammed Mainul
Deposited On:31 Oct 2022 18:28
Last Modified:31 Oct 2022 18:28

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