Results 21 to 30 of about 125,939 (188)

Investigation on the Use of Small Aperture Telescopes for LEO Satellite Orbit Determination [PDF]

open access: yes, 2020
The following thesis regards the use of small aperture telescopes for space domain awareness efforts. The rapidly populating space domain was motivation for the development of a new operation scheme to conduct space domain awareness feasibility studies ...
Curiel, Luis R, III
core   +1 more source

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

open access: yesInternational 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   +3 more
doaj   +1 more source

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

open access: yesRemote 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   +7 more
doaj   +1 more source

Validation of GPS Based Precise Orbits Using SLR Observations [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
In this study, the YLPODS (Yonsei Laser-ranging Precision Orbit Determination System) is developed for POD using SLR (Satellite Laser Ranging) NP (Normal Point) observations. The performance of YLPODS is tested using SLR NP observations of TOPEX/POSEIDON
Young-Rok Kim   +7 more
doaj   +1 more source

Simulation of the Use of Variance Component Estimation in Relative Weighting of Inter-Satellite Links and GNSS Measurements

open access: yesRemote Sensing, 2022
Inter-satellite links (ISLs) can improve the performance of the Global Navigation Satellite System (GNSS) in terms of precise orbit determination, communication, and data-exchange capabilities.
Tomasz Kur, Tomasz Liwosz
doaj   +1 more source

Asymptotic behaviour of orbit determination for hyperbolic maps [PDF]

open access: yes, 2020
We deal with the orbit determination problem for hyperbolic maps. The problem consists in determining the initial conditions of an orbit and, eventually, other parameters of the model from some observations. We study the behavior of the confidence region
Bonanno, Claudio, MarĂ², Stefano
core   +3 more sources

A Study on the Strategies of the Positioning of a Satellite on Observed Images by the Astronomical Telescope and the Observation and Initial Orbit Determination of Unidentified Space Objects [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2011
An optical tracking system has advantages for observing geostationary earth orbit (GEO) satellites relatively over other types of observation system.
Jin Choi   +8 more
doaj   +1 more source

A New Triangulation Algorithm for Positioning Space Debris

open access: yesRemote Sensing, 2021
A single electro-optical (EO) sensor used in space debris observation provides angle-only information. However, space debris position can be derived using simultaneous optical measurements obtained from two EO sensors located at two separate observation ...
Long Chen   +3 more
doaj   +1 more source

Shadowing Lemma and Chaotic Orbit Determination

open access: yes, 2015
Orbit determination is possible for a chaotic orbit of a dynamical system, given a finite set of observations, provided the initial conditions are at the central time.
Milani, Andrea, Spoto, Federica
core   +1 more source

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

open access: yesRemote 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

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