Results 41 to 50 of about 4,499,219 (309)

A More Reliable Orbit Initialization Method for LEO Precise Orbit Determination Using GNSS [PDF]

Remote Sensing, 2020
Precise orbit determination (POD) using GNSS has been rapidly developed and is the mainstream technology for the navigation of low Earth orbit (LEO) satellites. The initialization of orbit parameters is a key prerequisite for LEO POD processing. For a LEO satellite equipped with a GNSS receiver, sufficient discrete kinematic positions can be obtained ...
Xuewen Gong, Jizhang Sang, Fuhong Wang, Xingxing Li   +3 more
openaire   +3 more sources

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

, 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, Spiridonova, Sofya, Weigel, Martin, Kirschner, Michael, Kahr, Erin, Kahle, Ralph   +5 more
core   +1 more source

Bistatic Radar Observations Correlation of LEO Satellites Considering J₂ Perturbation

Mathematics, 2022
Space debris near Earth severely interferes with the development of space, and cataloging space objects is increasingly important. Since optical telescopes and radars used to detect space debris only provide short-arc observations, mathematical ...
Zongbo Huyan, Yu Jiang, Hengnian Li, Pengbin Ma, Dapeng Zhang   +4 more
doaj   +1 more source

Geostationary Orbit Surveillance Using the Unscented Kalman Filter and the Analytical Orbit Model [PDF]

Journal of Astronomy and Space Sciences, 2011
A strategy for geostationary orbit (or geostationary earth orbit [GEO]) surveillance based on optical angular observations is presented in this study. For the dynamic model, precise analytical orbit model developed by Lee et al.
Kyoung-Min Roh, Eun-Seo Park, Byung-Kyu Choi   +2 more
doaj   +1 more source

Short-Arc Association and Orbit Determination for New GEO Objects with Space-Based Optical Surveillance

Aerospace, 2021
For Geosynchronous Earth Orbit (GEO) objects, space-based optical surveillance has advantages over regional ground surveillance in terms of both the timeliness and space coverage.
Jian Huang, Xiangxu Lei, Guangyu Zhao, Lei Liu, Zhenwei Li, Hao Luo, Jizhang Sang   +6 more
doaj   +1 more source

Research on the Effectiveness of Different Estimation Algorithm on the Autonomous Orbit Determination of Lagrangian Navigation Constellation

International Journal of Aerospace Engineering, 2016
The accuracy of autonomous orbit determination of Lagrangian navigation constellation will affect the navigation accuracy for the deep space probes. Because of the special dynamical characteristics of Lagrangian navigation satellite, the error caused by ...
Youtao Gao, Junkang Chen, Bo Xu, Jianhua Zhou   +3 more
doaj   +1 more source

Prototype of automatic satellite streak detection, identification and initial orbit determination pipeline from optical observation

Journal of Physics, Conference Series, 2022
We present a working prototype of automatic satellite streak detection, identification and initial orbit determination pipeline from optical telescope images based on python.
M. D. Danarianto, A. M. Maharani, B. M. Falah, F. Rohmah   +3 more
semanticscholar   +1 more source

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   +1 more source

Precise Orbit Determination for BeiDou GEO/IGSO Satellites during Orbit Maneuvering with Pseudo-Stochastic Pulses

Remote Sensing, 2019
In order to provide better service for the Asia-Pacific region, the BeiDou navigation satellite system (BDS) is designed as a constellation containing medium earth orbit (MEO), geostationary earth orbit (GEO), and inclined geosynchronous orbit (IGSO ...
Zhiwei Qin, Guanwen Huang, Qin Zhang, Le Wang, Xingyuan Yan, Shichao Xie, Yu Cao, Xiaolei Wang   +7 more
doaj   +1 more source

Role of Topocentric Parallax in Near-Earth Object Initial Orbit Determination

Publications of the Astronomical Society of the Pacific, 2022
Near-Earth Object (NEO) initial orbit determination typically uses astrometric measurements during a close approach over a time window much shorter than the orbital period of the NEO.
C. Zhai, M. Shao, N. Saini, P. Choi, R. Trahan, Kutay Nazli, Max Zhan, N. Evans   +7 more
semanticscholar   +1 more source