Satellite communications dennis roddy
[...]... 107.5°E.L Morning Star Satellite Company, L.L.C PanAmSat Licensee Corporation Echostar Satellite Corporation Loral Space & Communications, Ltd VisionStar, Inc KaStar Satellite Communications Corp GE American Communications, Inc PanAmSat Corporation Hughes Communications Galaxy, Inc Hughes Communications Galaxy, Inc Lockheed Martin Corporation NetSat 28 Company, L.L.C Loral Space & Communications, Ltd... Anik-E1 satellite (in 1994 Canadian dollars) was $281.2 million, and that of the Anik-E2, $290.5 million The combined launch insurance for both satellites was $95.5 million A feature of any satellite system is that the cost is distance insensitive, meaning that it costs about the same to provide a satellite communications link over a short distance as it does over a large distance Thus a satellite communications. .. these regions, frequency bands are allocated to various satellite services, although a given service may be allocated different frequency bands in different regions Some of the services provided by satellites are: Fixed satellite service (FSS) Broadcasting satellite service (BSS) Mobile satellite services Navigational satellite services Meteorological satellite services There are many subdivisions within... of communications Because very large areas of the earth are visible from a satellite, the satellite can form the star point of a communications net, simultaneously linking many users who may be widely separated geographically The same feature enables satellites to provide communications links to remote communities in sparsely populated areas that are difficult to access by other means Of course, satellite. .. American Communications, Inc Echostar Satellite Corporation Orion Network Systems Comm, Inc Comm, Inc KaStar Satellite Corporation [under consideration] Morning Star Satellite Company, L.L.C PanAmSat Corporation Hughes Communications Galaxy, Inc Orion Atlantic, L.P Lockheed Martin Corporation GE American Communications, Inc Lockheed Martin Corporation Hughes Communication Galaxy, Inc Morning Star Satellite. .. use of satellites in communications systems is very much a fact of everyday life, as is evidenced by the many homes equipped with antennas, or “dishes,” used for reception of satellite television What may not be so well known is that satellites form an essential part of telecommunications systems worldwide, carrying large amounts of data and telephone traffic in addition to television signals Satellites... Satellite Company, L.L.C PanAmSat Corporation PanAmSat Corporation PanAmSat Corporation Hughes Communications Galaxy, Inc GE American Communications, Inc Orion Network Systems, Inc Hughes Communications Galaxy, Inc Loral Space & Communications, Ltd Morning Star Satellite Company, L.L.C NOTES: FCC—Federal Communications Commission; W.L.—West Longitude; E.L.—East Longitude ∗ VisionStar will operate at... provide a transoceanic telecommunications route For example, INTELSAT satellite 905 is positioned at 335.5° east longitude The footprints for the C-band antennas are shown in Fig 1.2a, and for the Kuband spot beam antennas in Figs 1.2b and c 5 Figure 1.1 Evolution of INTELSAT satellites (From Colino 1985; courtesy of ITU Telecommunications Journal.) 6 Chapter One 10° 5° 0° INTELSAT satellite 905 is positioned... Overview of Satellite Systems TABLE 1.4 11 Defining Characteristics of Three Categories of United States DBS Systems High power Band Downlink frequency allocation GHz Uplink frequency allocation GHz Space service Primary intended use Allowed additional use Terrestrial interference possible Satellite spacing degrees Satellite spacing determined by Adjacent satellite interference possible? Satellite EIRP... the satellite in the 14-GHz band The satellite retransmits the television signal in a wide beam in the 12-GHz frequency band Individual receivers within the beam coverage area will receive the satellite signal 12 Chapter One Figure 1.5 Components of a direct broadcasting satellite system (From Government of Canada, 1983, with permission.) Table 1.5 shows the orbital assignments for domestic fixed satellites .