Results 1 to 10 of about 3,365,879 (300)

Uncertainty Analysis of the Short-Arc Initial Orbit Determination

IEEE Access, 2020
The solution of the short-arc angles-only orbit determination problem has large uncertainty because the topocentric range is not observable. For a certain angular observation tracklet with measurement noise, there exist numerous potential orbits, all of ...
Xuefeng Tao, Zhi Li, Qiuwu Gong, Yasheng Zhang, Ping Jiang   +4 more
doaj   +4 more sources

Precise Orbit Determination of MEX Flyby Phobos Using Simulated Radiometric and Image Data [PDF]

Sensors, 2021
A navigation camera or topography camera is a standard payload for deep space missions and the image data are normally used for auto-navigation. In this work, we study the potential contribution of image data in precise orbit determination for deep space
Xinbo Zhu, Lu Liu, Suyan Liu, Pan Xie, Wutong Gao, Jianguo Yan   +5 more
doaj   +2 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

Unidirectional Orbit Determination for Extended Users Based on Navigation Ka-Band Inter-Satellite Links [PDF]

Sensors
Traditional spacecraft orbit determination primarily employs two methodologies: ground station/survey ship-based orbit determination and global navigation satellite system (GNSS)-based orbit determination.
Yong Shangguan, Hua Zhang, Yong Yu, Wenjin Wang, Bin Liu, Haihan Li, Rong Ma   +6 more
doaj   +2 more sources

Precise Orbit Determination of LEO Satellites Based on Undifferenced GNSS Observations

Journal of Surveying Engineering, - ASCE, 2022
Precise orbit determination (POD) is the procedure for determining the orbit of a satellite with high accuracy.
Kan Wang, Ahmed El-Mowafy, Amir Allahvirdi-Zadeh   +2 more
exaly   +2 more sources

High-precision GPS orbit determination by integrating the measurements from regional ground stations and LEO onboard receivers

Satellite Navigation
High-precision Global Navigation Satellite System (GNSS) orbit and clock products are crucial for precise applications. An evenly distributed global network enables continuous tracking for GNSS satellites, while a regional network may result in tracking ...
Kai Li, Chengpan Tang, Shanshi Zhou, Xiaogong Hu, Xuhua Zhou   +4 more
doaj   +2 more sources

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, Xiaolei Dai, Xiaopeng Gong, Chenglong Li, Yun Qing, Yang Liu, Yaquan Peng, Shengfeng Gu   +7 more
doaj   +2 more sources

Initial Orbit Determination Methods for Track-to-Track Association

Advances in Space Research, 2021
The detection and identification of Resident Space Objects (RSOs) from survey tracks requires robust and efficient orbit determination methods for the association of observations of the same RSO.
Manuel Sanjurjo-Rivo, Alejandro Pastor, Diego Escobar   +2 more
exaly   +2 more sources

Non-Cooperative LEO Satellite Orbit Determination Using Single Station for Space-Based Opportunistic Positioning

Remote Sensing
Space-based opportunistic positioning is a crucial component of resilient positioning, navigation, and timing (PNT) systems, and it requires the acquisition of orbit information for non-cooperative low Earth orbit (LEO) satellites.
Ruofan Deng, Honglei Qin, Yu Zhang
doaj   +3 more sources

Real-Time Orbit Determination of Micro–Nano Satellite Using Robust Adaptive Filtering [PDF]

Sensors
Low-performing GPS receivers, often used in challenging scenarios such as attitude maneuver and attitude rotation, are frequently encountered for micro–nano satellites.
Jing Chen, Xiaojun Jin, Cong Hou, Likai Zhu, Zhaobin Xu, Zhonghe Jin   +5 more
doaj   +2 more sources