Results 61 to 70 of about 579,088 (317)
Remote SensingSpace-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
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Earth, Planets and Space, 2020 The precise orbit of the Hayabusa2 spacecraft with respect to asteroid Ryugu is dynamically determined using the data sets collected by the spacecraft’s onboard laser altimeter (LIght Detection And Ranging, LIDAR) and automated image tracking (AIT).
Keiko Yamamoto +37 more
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Performance Comparison of the Batch Filter Based on the Unscented Transformation and Other Batch Filters for Satellite Orbit Determination [PDF]
Journal of Astronomy and Space Sciences, 2009 The main purpose of the current research is to introduce the alternative algorithm of the non-recursive batch filter based on the unscented transformation in which the linearization process is unnecessary.
Eunseo Park +2 more
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Maximum a posteriori estimation through simulated annealing for binary asteroid orbit determination
, 2017 This paper considers a new method for the binary asteroid orbit determination problem. The method is based on the Bayesian approach with a global optimisation algorithm.
Emelyanov, Nikolay V. +2 more
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Comparing Analytical and Numerical Approaches to Meteoroid Orbit Determination using Hayabusa Telemetry [PDF]
, 2018 Fireball networks establish the trajectories of meteoritic material passing through Earth's atmosphere, from which they can derive pre-entry orbits. Triangulated atmospheric trajectory data requires different orbit determination methods to those applied to observational data beyond the Earth's sphere-of-influence, such as telescopic observations of ...
arxiv +1 more source
Asymptotic behaviour of orbit determination for hyperbolic maps [PDF]
, 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, Marò, Stefano
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Post-Newtonian Quasicircular Initial Orbits for Numerical Relativity [PDF]
, 2017 We use post-Newtonian (PN) approximations to determine the initial orbital and spin parameters of black hole binaries that lead to low-eccentricity inspirals when evolved with numerical relativity techniques. In particular, we seek initial configurations that lead to very small eccentricities at small separations, as is expected for astrophysical ...
arxiv +1 more source
Space-Based Optical Observations on Space Debris via Multipoint of View
International Journal of Aerospace Engineering, 2020 In this paper, the space debris catalogue in LEO is fulfilled using multipoint of view (MPOV) observations constructed by a spacecraft formation. The dual-point of view (DPOV) observation is employed because it has higher cost-benefit ratio than other ...
Zhao Li, Yidi Wang, Wei Zheng
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Phasing analysis on DRO with impulsive maneuver
Frontiers in Astronomy and Space Sciences, 2023 The cis-lunar periodic orbit exhibits some unique dynamic characteristics. Among them is the distant retrograde orbit, which has long-term stability and is one of the ideal candidate deployment orbits for cis-lunar space stations and deep-space ...
Honglan Fu +4 more
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Adaptive data association using multiple hypothesis tracker for space object tracking [PDF]
, 2022 There are thousands of objects in space with only a few sensors. Also when multiple objects are observed by a sensor, there is often an ambiguity of which measurement belongs to which object.
Richard, Thibault
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