Results 121 to 130 of about 169 (164)

Initial orbit determination using multiple observations

Celestial Mechanics and Dynamical Astronomy, 2010
A novel approach for initial orbit determination based on multiple angles-only observations is presented. The proposed technique is iterative and uses Lagrangian coefficients, f and g. The proposed method does not show singularity for the coplanar cases.
Daniele Mortari, Mortari Daniele
exaly   +2 more sources

Initial Orbit Determination Utilizing Solution Group Optimization

IEEE Transactions on Aerospace and Electronic Systems, 2020
This paper investigates the use of space-based tracking data to determine the initial orbit of low-earth orbit (LEO) target satellites. A series of tracking data without distance information of a LEO target satellite can be provided by a space-based imaging observer and a target detection process. First, Gauss’ method is applied to a series of a target
Jing Hu, Binzhe Li, Jun Li 0125
openaire   +1 more source

Initial Orbit Determination Using Simplex Fusion

2020 IEEE Aerospace Conference, 2020
A new Initial Orbit Determination (IOD) method for angles-only observations is presented. This method is based on an adaptive Nelder-Mead simplex optimization technique for fusion of multiple observations from one or more acquisition satellites. The resulting solution characterizes the target orbit as a standard state vector.
Patrick M. Handley, Susan P. Hagerty
openaire   +1 more source

Statistical initial orbit determination

Journal of Spacecraft and Rockets, 1992
For the ballistic missile initial orbit determination problem in particular, the concept of 'launch folders' is extended. This allows to decouple the observational data from the initial orbit determination problem per se. The observational data is only used to select among the possible orbital element sets in the group of folders.
L. G. Taff, B. Belkin, G. A. Schweiter, K. Sommar   +3 more
openaire   +1 more source

A new method of initial orbit determination

Celestial Mechanics, 1986
We present a new method of initial orbit determination for angles-only data. The technique is applicable with only three data sets but the formalism can incorporate arbitrarily large amounts of data. The algorithm rests on the fact that the orbital plane is usually very well determined, as a consequence of the central nature of the gravitational force,
B. G. Morton, L. G. Taff
openaire   +1 more source

A Method of Initial Orbit Determination for Space Group Targets

2019 International Conference on Control, Automation and Information Sciences (ICCAIS), 2019
Generally the initial orbit determination algorithm handles a single space target and little attention has been paid to that for group targets. Since the association problem in an extended dense space group is usually difficult, we propose an initial orbit determination method to directly estimate the mean orbital elements of the group targets. Firstly,
Zhengtao Zhang, Huang Qiang, Zhang Zhi
openaire   +1 more source

Initial orbit determination using camera array

2017 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 2018
Optical measuring angle data can be used in initial orbit determination. However, optical system has its magnitude limit, the initial orbits can not be determined when targets’ magnitudes are above the limited magnitude or the relative size of the target can not meet the resolution requirements. In order to expand the observable range of optical system
RunFeng Wang, HaiRui Zeng, TingHua Zhang, YingChun LI, Biao Yang   +4 more
openaire   +1 more source

Bearings-Only Initial Relative Orbit Determination

Journal of Guidance, Control, and Dynamics, 2015
A method for performing bearings-only initial relative orbit determination of a nearby space object in the absence of any information regarding the space object’s geometry and relative orbit is presented. To resolve the range ambiguity characteristic of a single optical sensor system, a second optical sensor is included at a known baseline distance on ...
Keith A. LeGrand, Kyle J. DeMars, Henry J. Pernicka   +2 more
openaire   +1 more source

Probabilistic Initial Orbit Determination [PDF]

, 2016
Future space surveillance requires dealing with uncertainties directly in the initial orbit determination phase. We propose an approach based on Taylor differential algebra to both solve the initial orbit determination (IOD) problem and to map uncertainties from the observables space into the orbital elements space. This is achieved by approximating in
ARMELLIN, ROBERTO, DI LIZIA, PIERLUIGI
openaire   +1 more source

Correlation of Optical Observations of Earth-Orbiting Objects and Initial Orbit Determination

Journal of Guidance, Control, and Dynamics, 2012
For optical observations of Earth-orbiting objects, multiple observationsmust be combined to determine the orbit of the observed object.Whether two arbitrary tracks are of the same object, however, is generally unknown a priori, and solving this problem with traditional approaches requires iterative procedures that do not guarantee convergence.
K. Fujimoto, D. J. Scheeres
openaire   +1 more source