منابع مشابه
Martian satellite orbits and ephemerides
We discuss the general characteristics of the orbits of the Martian satellites, Phobos and Deimos. We provide a concise review of the various descriptions of the orbits by both analytical theories and direct numerical integrations of their equations of motion. After summarizing the observational data used to determine the orbits, we discuss the results of our latest orbits obtained from a least...
متن کاملSatellite Orbits Based Sky Search
The fast evolution of GNSS based applications makes it necessary the development of accurate and efficient navigation systems. The GPS usually adopts a two level strategy for position estimation: Coarse Acquisition of the PRN code, and fine tracking. In the so called “cold start” state, i.e. initialization without almanac data, coarse acquisition is a three dimensional search process of code, c...
متن کاملResults of Long-Duration Simulation of Distant Retrograde Orbits
Distant Retrograde Orbits in the Earth-Moon system are gaining in popularity as stable ‘parking’ orbits for various conceptual missions. To investigate the stability of potential Distant Retrograde Orbits, simulations were executed, with propagation running over a thirty-year period. Initial conditions for the vehicle state were limited such that the position and velocity vectors were in the Ea...
متن کاملarchitecture and performance of satellite configurations in different orbits
in this paper, new features of satellite configuration, such as ip network based infrastructure and separated signaling and media are considered to propose a variety of satellite configurations in different orbits. because of their different altitude in space such as low earth orbit(leo) and geostationary orbit (geo). a test bed used to test call setup delay in a one space link to process th...
متن کاملSpatial Distribution of Satellite Constellations on Circular Orbits
This paper addresses the problem of equal distribution of a satellite constellation on a circular target orbit. The control goal is to make a satellite constellation converge to a circular target orbit, while spatially distributing the satellites. The solution is defined in the port-Hamiltonian framework, which provides a clear physical interpretation of the control laws. The controller consist...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1913
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/74.2.62