By Fei Long
ISBN-10: 3642543529
ISBN-13: 9783642543524
ISBN-10: 3642543537
ISBN-13: 9783642543531
ISBN-10: 7118094919
ISBN-13: 9787118094916
Satellite community strong QoS-aware Routing provides a singular routing approach for satellite tv for pc networks. This approach comes in handy for the layout of multi-layered satellite tv for pc networks because it can tremendously decrease the variety of time slots in a single method cycle. The site visitors prediction and engineering methods make the approach strong in order that the site visitors spikes will be dealt with successfully. The multi-QoS optimization routing set of rules can fulfill a variety of strength consumer necessities. transparent and adequate illustrations also are provided within the e-book. because the chapters hide the above issues independently, readers from various study backgrounds in constellation layout, multi-QoS routing, and site visitors engineering can enjoy the book.
Fei Long is a senior engineer at Beijing R&D heart of 54th study Institute of China Electronics know-how staff Corporation.
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Additional resources for Satellite Network Robust QoS-aware Routing
Example text
10. First, let us investigate the orbital plane 1 satellite coverage of E0 . Using plane xoy as the cross section, we draw a sectional view of the coverage of MEO satellite M1x over E0 as shown in Fig. 11. The MEO satellite coverage of E0 can be obtained by calculating the coverage semi-angle / of the MEO satellite over E0 As mentioned in Sect. 14 km ? 14 km. If the minimum 34 2 Satellite Network Constellation Design Fig. 11 The cross-sectional view of the MEO coverage of the LEO elevation / = 10°, we have \OLM = 90° + / = 100°.
2 can be divided into the geostationary orbit system and the non-geostationary orbit system. The altitude of a geostationary orbit is 35,800 km, so the value of RTT is large, and the transmitting power required by a ground personal terminal is relatively high. Currently, most of the satellite systems in use are in non-geostationary orbits. The non-geostationary orbit satellites can be divided into circular orbit satellites and elliptical orbit satellites according to the orbit type. An elliptical orbit satellite has good coverage of high latitude areas.
4 shows a side view of a polarorbiting constellation. Every single polar-orbiting satellite maintains four ISLs, two of which connect the adjacent satellites within the same orbit and the other two connect the adjacent satellites in two adjacent tracks. 2 Principle of Constellation Design 27 Fig. 4 Side view of a polar orbit constellation Fig. 5 Top view of an inclined orbit constellation satellites in the same orbit are permanent links. ISLs connecting the adjacent satellites in adjacent orbits will be temporarily closed when crossing the Polar Regions, for the antennas cannot track the neighboring satellites in time during the high-speed swap of satellite relative positions.