Results 51 to 60 of about 4,499,219 (309)
Importance of adding perturbations in the optimized boundary value initial orbit determination using shooting method [PDF]
, 2021 Space debris is becoming a major threat for functionalspacecraft. Since, out of thousands of tracked objects inthe Earth’s orbits, only a small percentage correspondsto the operational satellites.
Schildknecht, T. +2 more
core
Multi-objective optimisation of many-revolution, low-thrust orbit raising for Destiny mission [PDF]
, 2013 This work will present a Multi-Objective approach to the design of the initial, Low-Thrust orbit raising phase for JAXA’s proposed technology demonstrator mission DESTINY.
Kawakatsu, Yasuhiro +2 more
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AerospaceIn response to the increasing demand for high-precision navigation of satellites operating in the cislunar space, this study introduces an onboard orbit determination algorithm considering both convergence and computational efficiency, referred to as the
Yingjie Xu +5 more
doaj +1 more source
On initial orbit determination
The Astronomical Journal, 1984 The classical methods of initial orbit determination are brought together within a larger viewpoint. This new synthesis stresses that all such techniques follow one of three approaches. Either they seek to compute the orbital element set, or its equivalent, by attacking the differential equations of motion (Laplace), the first integrals of the ...
openaire +1 more source
Shooting method to allow for perturbations in the optimized boundary value initial orbit determination [PDF]
, 2020 Space debris poses threats to functional spacecraft around the Earth due to the possibility of collisions in orbit. The debris object population needs to be cataloged to monitor the space environment.
Schildknecht, Thomas +2 more
core
Journal of Astronomy and Space Sciences, 2019 The Optical Wide-field patroL-Network (OWL-Net) is a Korean optical space surveillance system used to track and monitor objects in space. In this study, the characteristics of four Initial Orbit Determination (IOD) methods were analyzed using artificial ...
Hyewon Hwang, Sang-Young Park, Eunji Lee
doaj +1 more source
Initial Orbit Determination for Distant Objects
The Astronomical Journal, 2004 Initial orbit determination for distant objects can be made a simple linear problem with explicit solutions. This is similar to stellar parallax work, with very difficult observations but simple computations. A very simple procedure for computing ephemerides for distant objects is proposed.
openaire +2 more sources
Validation of GPS Based Precise Orbits Using SLR Observations [PDF]
Journal 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
Remote 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
Best hypotheses search on iso-energy-grid for initial orbit determination and track association [PDF]
, 2013 Debris populating the geostationary orbit is mainly observed by ground-based optical telescopes. Short measurement arcs, known as tracklets, provide line-of-sight information along with the associated rates of change.
Weigel, Martin +3 more
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