| 摘要 |
Provided is a terrestrial communication system, facilitating one- and/or two-way audio, video or data communication for users within a local geographical area with use of frequencies within the microwave range and a relatively low power output, comprises at least two terrestrial satellites (LTS), each (LTS) having high frequency communication equipment substantially corresponding to a conventional geostationary satellite utilizing digital transmission techniques. The antenna system of each (LTS) is located spaced from remaining (LTS) serving the geographical area to be covered. The antenna systems are preferably omnidirectional and arranged for transmission in a substantially horizontal plane. Users of the system having directional antenna installations are able to select desired (LTS) by a change of the directional antenna in a horizontal (rotary) or vertical plane (plane of inclination) thus facilitating those frequencies used by one (LTS) of the system also being used by any other (LTS) included in the system for similar or different communication purposes. The number of communication channels available within a given frequency segment is increased to a substantially unlimited number of channels by inclusion of further (LTS) covering the intended geographical area. The antenna systems of at least two adjacently located local terrestrial satellites (LTS) may be supported spaced from each other at different heights in a mast or any other supporting structure - sufficiently spaced from each other to facilitate transmission and/or reception of signals at any channel frequency.
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