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    Direct Satellite Communications

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    Name:
    1985_Hills_Direct Satellite ...
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    Author
    Hills, Alex
    Keyword
    Satellite communications
    Metadata
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    URI
    http://hdl.handle.net/11122/10266
    Abstract
    Mobile radio communications in Alaska are not always effective along our highways, marine system, and remote field sites. This ineffective mobile radio communications coverage is due in part to the lack of repeaters in appropriate locations and an excess of users on certain frequencies. Lower frequencies can propogate over hilly areas whereas higher frequencies tend to travel in straight lines and are shielded by hills, ridges, and tall buildings. A new communications system called Mobile Satellite Service (MSS) may be available for use in the State in three or four years. The MSS system utilizes a satellite link between the transmitting station to the receiving station. The system is best suited for areas with few path obstructions therefore use in remote, rural areas where other forms of communication are unavailable or unreliable is very appropriate. This interim report identifies candidate applications in the state and determines coverage which will be provided in Alaska by each of the proposed satellites. The final report will give specific recommendations for feasible applications and include a technical and economical analysis of mobile satellite operations in Alaska, specifying technical requirements and defining potential operating difficulties.
    Table of Contents
    Introduction - 1 System Structure - 2 Candidate Applications - 3 Vehicles on the Highway System - 3 Remote Locations - 4 Other - 5 Proposed Satellites - 5 Shadow Analysis - 11 Graphical Analysis - 13 Conclusion - 16
    Date
    1985-06
    Type
    Technical Report
    Collections
    INE Project Reports

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