Artificial satellite orbit computations

1966 ◽  
Vol 25 ◽  
pp. 363-371
Author(s):  
P. Sconzo
Keyword(s):  
Artificial Satellite ◽  
Satellite Orbit ◽  
Artificial Satellites ◽  
Orbital Elements ◽  
Differential Correction ◽  
Gravitational Effects ◽  
Short Intervals ◽  
The Subject ◽  
Introductory Discussion ◽  
Orbit Computation

In this paper an orbit computation program for artificial satellites is presented. This program is operational and it has already been used to compute the orbits of several satellites.After an introductory discussion on the subject of artificial satellite orbit computations, the features of this program are thoroughly explained. In order to achieve the representation of the orbital elements over short intervals of time a drag-free perturbation theory coupled with a differential correction procedure is used, while the long range behavior is obtained empirically. The empirical treatment of the non-gravitational effects upon the satellite motion seems to be very satisfactory. Numerical analysis procedures supporting this treatment and experience gained in using our program are also objects of discussion.

scholarly journals Effects of radiation pressure and earth’s oblatness on high altitude artificial satellite orbit

10.4081/708 ◽  
2011 ◽  
Vol 1 (1) ◽  
pp. e2
Author(s):  
Khalil I. Khalil ◽  
Mohamed N.S. Ismail
Keyword(s):  
High Altitude ◽  
Radiation Pressure ◽  
Artificial Satellite ◽  
Equations Of Motion ◽  
Satellite Orbit ◽  
Artificial Satellites ◽  
Runge Kutta Method ◽  
Ks Variables ◽  
Effects Of Radiation ◽  
Earth’S Oblateness

This paper is devoted to study the effects of radiation pressure together with tesseral and zonal harmonics on the high altitude artificial satellites orbits. The equations of motion were regularized by using the KS variables and the problem was solved numerically using the fourth order of Runge Kutta method. A numerical testing was performed on Lageos-1 satellite in order to analyze its orbital changes due to effects of both radiation pressure and Earth's oblateness.

scholarly journals Effects of radiation pressure and earth’s oblatness on high altitude artificial satellite orbit

2011 ◽  
Vol 1 (1) ◽  
pp. 2
Author(s):  
Khalil I. Khalil ◽  
Mohamed N.S. Ismail
Keyword(s):  
High Altitude ◽  
Radiation Pressure ◽  
Artificial Satellite ◽  
Equations Of Motion ◽  
Satellite Orbit ◽  
Artificial Satellites ◽  
Runge Kutta Method ◽  
Ks Variables ◽  
Effects Of Radiation ◽  
Earth’S Oblateness

This paper is devoted to study the effects of radiation pressure together with tesseral and zonal harmonics on the high altitude artificial satellites orbits. The equations of motion were regularized by using the KS variables and the problem was solved numerically using the fourth order of Runge Kutta method. A numerical testing was performed on Lageos-1 satellite in order to analyze its orbital changes due to effects of both radiation pressure and Earth's oblateness.

scholarly journals Satellite orbit under influence of a drag - analytical approach

2017 ◽  
pp. 53-58 ◽  
Author(s):  
M.M. Martinovic ◽  
S.D. Segan
Keyword(s):  
Computer Algebra ◽  
Computer Algebra System ◽  
Analytical Approach ◽  
Satellite Orbit ◽  
Numerical Approach ◽  
Artificial Satellites ◽  
Atmospheric Drag ◽  
Orbital Elements ◽  
Air Density ◽  
Good Agreement

The report studies some changes in orbital elements of the artificial satellites of Earth under influence of atmospheric drag. In order to develop possibilities of applying the results in many future cases, an analytical interpretation of the orbital element perturbations is given via useful, but very long expressions. The development is based on the TD88 air density model, recently upgraded with some additional terms. Some expressions and formulae were developed by the computer algebra system Mathematica and tested in some hypothetical cases. The results have good agreement with iterative (numerical) approach.

scholarly journals Effects of radiation pressure and earth’s oblatness on high altitude artificial satellite orbit

2011 ◽  
Vol 1 (1) ◽  
pp. e2
Author(s):  
Khalil I. Khalil ◽  
Mohamed N.S. Ismail
Keyword(s):  
High Altitude ◽  
Radiation Pressure ◽  
Artificial Satellite ◽  
Equations Of Motion ◽  
Satellite Orbit ◽  
Artificial Satellites ◽  
Runge Kutta Method ◽  
Ks Variables ◽  
Effects Of Radiation ◽  
Earth’S Oblateness

This paper is devoted to study the effects of radiation pressure together with tesseral and zonal harmonics on the high altitude artificial satellites orbits. The equations of motion were regularized by using the KS variables and the problem was solved numerically using the fourth order of Runge Kutta method. A numerical testing was performed on Lageos-1 satellite in order to analyze its orbital changes due to effects of both radiation pressure and Earth's oblateness.

scholarly journals Dynamics of Artificial Satellites around Europa

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Jean Paulo dos Santos Carvalho ◽  
Rodolpho Vilhena de Moraes ◽  
Antônio Fernando Bertachini de Almeida Prado
Keyword(s):  
Closed Form ◽  
Artificial Satellite ◽  
Equations Of Motion ◽  
Maintenance Cost ◽  
Artificial Satellites ◽  
Present Moment ◽  
Orbital Elements ◽  
Disturbing Potential ◽  
Planetary Satellite ◽  
Nonspherical Shape

A planetary satellite of interest at the present moment for the scientific community is Europa, one of the four largest moons of Jupiter. There are some missions planned to visit Europa in the next years, for example, Jupiter Europa Orbiter (JEO, NASA) and Jupiter Icy Moon Explorer (JUICE, ESA). In this paper, we search for orbits around Europa with long lifetimes. Here, we develop the disturbing potential in closed form up to the second order to analyze the effects caused on the orbital elements of an artificial satellite around Europa. The equations of motion are developed in closed form to avoid expansions in power series of the eccentricity and inclination. We found polar orbits with long lifetimes. This type of orbits reduces considerably the maintenance cost of the orbit. We show a formula to calculate the critical inclination of orbits around Europa taking into account the disturbing potential due to the nonspherical shape of the central body and the perturbation of the third body.

Perturbative effects of antenna radiation reaction on artificial satellite orbit

2012 ◽  
Vol 23 (1) ◽  
pp. 352-357 ◽  
Author(s):  
A. Heilmann ◽  
Luiz Danilo Damasceno Ferreira ◽  
C.A. Dartora ◽  
K.Z. Nobrega
Keyword(s):  
Artificial Satellite ◽  
Satellite Orbit ◽  
Radiation Reaction ◽  
Antenna Radiation

The Effect of Knowledge of Results on Learning and Performance IV. The Direction of the Error in Very Simple Skills

1951 ◽  
Vol 3 (1) ◽  
pp. 36-42 ◽  
Author(s):  
Valerie Dees ◽  
G. C. Grindley
Keyword(s):  
Short Interval ◽  
The Other ◽  
Time Interval ◽  
Knowledge Of Results ◽  
Short Intervals ◽  
Visual Knowledge ◽  
Other Hand ◽  
The Subject ◽  
And Performance ◽  
Learning And Performance

Re-examination of the data discussed in previous papers of this series shows a greater tendency toward “overshooting” when the time interval between trials, in some of the experiments, is short than when it is longer. The subject tends to make a bigger movement or exert more pressure with short intervals. This seems to be true with or without visual knowledge of results. On the other hand, with the experiments in which the task was to press a key for a given short interval, the effect was not conclusively shown. A hypothesis is put forward to explain these results in terms of proprioceptive adaptation.

Paper 4: An Introduction to Design Calculations on a Digital Computer

1967 ◽  
Vol 182 (12) ◽  
pp. 28-39
Author(s):  
A. J. Edwards ◽  
B. L. Mead
Keyword(s):  
Systems Analysis ◽  
Digital Computer ◽  
Short Discussion ◽  
Fortran Language ◽  
The Subject ◽  
Design Calculations ◽  
Introductory Discussion

The paper is of a purely introductory nature and is an attempt to provide a brief introduction to performing design calculations on a computer for engineers with no experience of computer techniques. The paper comments, with a brief description, on a typical computer installation (i.e. I.C.T. 1909); this is followed by a short discussion of problem systems analysis and flow diagramming then a short introductory discussion of the FORTRAN language. In view of the introductory nature of the paper the problems discussed are kept as simple as is compatible with the subject. It will be realized that more sophisticated approaches could be made to the problems but in order to maintain the paper at an introductory level as a guide to those engineers with no experience of using a digital computer, such solutions are deemed to be beyond the scope of the paper.

scholarly journals Analytical and Semi-Analytical Treatment of the Satellite Motion in a Resisting Medium

2012 ◽  
Vol 2012 ◽  
pp. 1-18 ◽  
Author(s):  
S. E. Abd El-Bar ◽  
F. A. Abd El-Salam
Keyword(s):  
Fourth Order ◽  
Artificial Satellite ◽  
Equations Of Motion ◽  
Orbital Dynamics ◽  
Atmospheric Drag ◽  
Satellite Motion ◽  
Orbital Elements ◽  
Analytical Treatment ◽  
First Order ◽  
Resisting Medium

The orbital dynamics of an artificial satellite in the Earth's atmosphere is considered. An analytic first-order atmospheric drag theory is developed using Lagrange's planetary equations. The short periodic perturbations due to the geopotential of all orbital elements are evaluated. And to construct a second-order analytical theory, the equations of motion become very complicated to be integrated analytically; thus we are forced to integrate them numerically using the method of Runge-Kutta of fourth order. The validity of the theory is checked on the already decayed Indian satellite ROHINI where its data are available.

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