Results 11 to 20 of about 3,183,096 (399)
A review of real-time multi-GNSS precise orbit determination based on the filter method
Satellite Navigation, 2022 Stable and reliable high-precision satellite orbit products are the prerequisites for the positioning services with high performance. In general, the positioning accuracy depends strongly on the quality of satellite orbit and clock products, especially ...
Yidong Lou +7 more
doaj +2 more sources
Perturbed initial orbit determination [PDF]
Astrodynamics, 2023 An algorithm for robust initial orbit determination (IOD) under perturbed orbital dynamics is presented. By leveraging map inversion techniques defined in the algebra of Taylor polynomials, this tool returns a highly accurate solution to the IOD problem and estimates a range centered on the aforementioned solution in which the true orbit should lie. To
Fossà, Alberto +2 more
openaire +3 more sources
Adaptive and Dynamically Constrained Process Noise Estimation for Orbit Determination. [PDF]
IEEE Trans Aerosp Electron Syst, 2021 This article introduces two new algorithms to accurately estimate the process noise covariance of a discrete-time Kalman filter online for robust orbit determination in the presence of dynamics model uncertainties.
Stacey N, D'Amico S.
europepmc +3 more sources
Precise orbit determination of LEO satellites: a systematic review
GPS Solutions, 2023 The need for precise orbit determination (POD) has grown significantly due to the increased amount of space-based activities taking place at an accelerating pace.
K. Selvan +5 more
semanticscholar +1 more source
Precise orbit determination for BDS satellites
Satellite Navigation, 2022 Since the first pair of BeiDou satellites was deployed in 2000, China has made continuous efforts to establish its own independent BeiDou Navigation Satellite System (BDS) to provide the regional radio determination satellite service as well as regional ...
Qile Zhao +6 more
semanticscholar +1 more source
Orbit determination of Sentinel-6A using the Galileo high accuracy service test signal
GPS Solutions, 2022 The High Accuracy Service (HAS) is an upcoming addition to the Galileo service portfolio that offers free correction data for precise point positioning in real-time.
A. Hauschild +4 more
semanticscholar +1 more source
Sentinel-6A precise orbit determination using a combined GPS/Galileo receiver
Journal of Geodesy, 2021 The Sentinel-6 (or Jason-CS) altimetry mission provides a long-term extension of the Topex and Jason-1/2/3 missions for ocean surface topography monitoring.
O. Montenbruck +3 more
semanticscholar +1 more source
Precise Orbit Determination of LEO Satellites Based on Undifferenced GNSS Observations
Journal of Surveying Engineering, 2022 Precise orbit determination (POD) is the procedure for determining the orbit of a satellite with high accuracy.
A. Allahvirdi-Zadeh +2 more
semanticscholar +1 more source
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 +4 more
semanticscholar +1 more source
Analysis of the Impact of Atmospheric Models on the Orbit Prediction of Space Debris
Sensors, 2023 Atmospheric drag is an important influencing factor in precise orbit determination and the prediction of low-orbit space debris. It has received widespread attention.
Yigao Ding +6 more
doaj +1 more source