Results 21 to 30 of about 4,499,219 (309)

Probabilistic Methods for Initial Orbit Determination and Orbit Determination in Cislunar Space

open access: yesCoRR
In orbital mechanics, Gauss's method for orbit determination (OD) is a popular, minimal assumption solution for obtaining the initial state estimate of a passing resident space object (RSO). Since much of the cislunar domain relies on three-body dynamics, a key assumption of Gauss's method is rendered incompatible, creating a need for a new, minimal ...
Ishan Paranjape   +2 more
openaire   +4 more sources

Initial orbit determination methods for track-to-track association

open access: yesAdvances 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   +2 more
exaly   +2 more sources

Projective Plane Subdivision Method for Initial Orbit Determination

open access: yesComputer Algebra in Scientific Computing
17 pages, 9 ...
Ruiqi Huang   +2 more
openaire   +4 more sources

Initial Orbit Determination Solution Distribution with Gooding Algorithm and Performance Enhancement

open access: yesSpace: Science & Technology
An initial orbit determination (IOD) solution from angles-only observations of a single short orbit arc is often required for applications such as tracklet association and fast reacquisition of a newly detected space object.
Zhengyuan Zhang   +4 more
doaj   +2 more sources

Dynamic Triangulation for Cislunar Initial Orbit Determination

open access: yesThe Journal of the Astronautical Sciences
Abstract Conventional angles-only initial orbit determination algorithms assume Keplerian dynamics and are not always well-adapted to finding the orbits of objects on cislunar trajectories. We propose a solution to this problem based on the concept of dynamic triangulation, which is a type of triangulation algorithm that produces a ...
Liam Smego, John Christian
openaire   +2 more sources

Initial Orbit Determination from Only Heading Measurements

open access: yesJournal of Spacecraft and Rockets, 2023
This work introduces the problem of initial orbit determination (IOD) from only heading measurements. Such a problem occurs in practice when estimating the orbit of a spacecraft using visual odometry measurements from an optical camera. After reviewing the problem geometry, a simple solution is developed in the form of an iterative scheme on the ...
Christian, John A.
openaire   +4 more sources

Numerical behaviour of the Keplerian Integrals methods for initial orbit determination

open access: yesIcarus, 2022
We investigate the behaviour of two recent methods for the computation of preliminary orbits. These methods are based on the conservation laws of Kepler's problem, and enable the linkage of very short arcs of optical observations even when they are separated in time by a few years.
Óscar Rodríguez   +3 more
openaire   +4 more sources

Using co-located range and Doppler radars for initial orbit determination

open access: yesActa Astronautica
With debris larger than 1 cm in size estimated to be over one million, precise cataloging efforts are essential to ensure space operations' safety. Compounding this challenge is the oversubscribed problem, where the sheer volume of space objects surpasses ground-based observatories' observational capacity. This results in sparse, brief observations and
Cristina Parigini   +5 more
openaire   +4 more sources

Generalizing Trilateration: Approximate Maximum Likelihood Estimator for Initial Orbit Determination in Low Earth Orbit

open access: yesIEEE Transactions on Aerospace and Electronic Systems
With the increase in the number of active satellites and space debris in orbit, the problem of initial orbit determination (IOD) becomes increasingly important, demanding a high accuracy. Over the years, different approaches have been presented such as filtering methods (for example, Extended Kalman Filter), differential algebra or solving Lambert's ...
Ricardo Ferreira 0002   +3 more
openaire   +5 more sources

Initial Orbit Determination Based on Propagation of Orbit Sets with Differential Algebra [PDF]

open access: yes, 2017
The object of this paper is the initial orbit determination of an orbit set compatible with an observational arc by means of differential algebra. The initial estimate is retrieved as a truncated power series expanded with respect to the uncertainties in the measurements. The analysis of the region is performed with the automatic domain splitting, that
Pirovano, L.   +4 more
openaire   +2 more sources

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