Relative Semimajor Axis Uncertainty in High Earth Orbits

2007 ◽  
Vol 30 (6) ◽  
pp. 1835-1839 ◽  
Author(s):  
Christopher Lane ◽  
Penina Axelrad
Keyword(s):  
Semimajor Axis ◽  
High Earth Orbits ◽  
Earth Orbits

X-ray pulsar-based GNC system for formation flying in high Earth orbits

2020 ◽  
Vol 170 ◽  
pp. 701-711
Author(s):  
Jianing Song ◽  
Camille Pirat ◽  
Volker Gass ◽  
Guodong Xu ◽  
Zhaoxiang Zhang ◽  
...  
Keyword(s):  
Formation Flying ◽  
X Ray ◽  
High Earth Orbits ◽  
Earth Orbits

scholarly journals Resonant Orbital Dynamics in LEO Region: Space Debris in Focus

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
J. C. Sampaio ◽  
E. Wnuk ◽  
R. Vilhena de Moraes ◽  
S. S. Fernandes
Keyword(s):  
Collision Avoidance ◽  
Frequency Analysis ◽  
Space Debris ◽  
Semimajor Axis ◽  
Orbital Dynamics ◽  
Accurate Information ◽  
The Earth ◽  
Low Earth Orbits ◽  
Line Elements ◽  
Earth Orbits

The increasing number of objects orbiting the earth justifies the great attention and interest in the observation, spacecraft protection, and collision avoidance. These studies involve different disturbances and resonances in the orbital motions of these objects distributed by the distinct altitudes. In this work, objects in resonant orbital motions are studied in low earth orbits. Using the two-line elements (TLE) of the NORAD, resonant angles and resonant periods associated with real motions are described, providing more accurate information to develop an analytical model that describes a certain resonance. The time behaviors of the semimajor axis, eccentricity, and inclination of some space debris are studied. Possible irregular motions are observed by the frequency analysis and by the presence of different resonant angles describing the orbital dynamics of these objects.

Analysis of relative navigation in high earth orbits

2007 ◽  
Vol 55 (1) ◽  
pp. 23-52 ◽  
Author(s):  
Christopher Lane ◽  
Penina Axelrad
Keyword(s):  
Relative Navigation ◽  
High Earth Orbits ◽  
Earth Orbits

scholarly journals Surveillance of medium and high Earth orbits using large baseline stereovision

2014 ◽  
Author(s):  
Radu Danescu ◽  
Anca Ciurte ◽  
Florin Oniga ◽  
Octavian Cristea ◽  
Paul Dolea ◽  
...  
Keyword(s):  
High Earth Orbits ◽  
Earth Orbits

Study of a population of space debris objects with a high area-to-mass ratio in high Earth orbits

2020 ◽  
Author(s):  
V.M. Agapov ◽  
I.E. Molotov ◽  
G.K. Borovin ◽  
A.I. Streltsov
Keyword(s):  
Space Debris ◽  
Orbital Motion ◽  
Center Of Mass ◽  
Light Curves ◽  
Mass Ratio ◽  
High Area ◽  
Motion Parameters ◽  
High Earth Orbits ◽  
Earth Orbits

The data on 498 space debris objects with a high area-to-mass ratio (HAMR) detected in 2016–2017 were analyzed to identify possible candidates for the role of "parent objects". As a result, the origin of several HAMR fragments was determined. These fragments separated from three different large objects in the geostationary orbit (GEO) region, including two functioning spacecraft and one rocket launcher stage. Observations of these three objects showed that there were no noticeable differences in their light curves, which indicates the absence of significant changes in the geometric shape, reflective characteristics and motion parameters relative to the center of mass. At least, both spacecraft continued to perform retention maneuvers in their positions on the GEO, and no unpredictable changes were detected in the orbital motion and in the stage light curve. Therefore, the formation of newly discovered fragments cannot be associated with the catastrophic destruction of the “parent objects”.

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