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Communication system, communication receiving device and communication terminal in the system

  • US 20060105708A1
  • Filed: 12/05/2005
  • Published: 05/18/2006
  • Est. Priority Date: 05/20/1998
  • Status: Abandoned Application
First Claim
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1. An information providing method of providing a service by transmitting:

  • a radio wave signal from plural artificial satellites and by receiving a radio wave signal at plural receiving equipment, comprising the steps of;

    locating each of said plural receiving equipment within a pre-defined service area, and receiving said radio wave within a pre-defined range of operational elevation angle by a receiving antenna thereof;

    arranging an orbit for said plural artificial satellites so that at least one of said plural artificial satellites is viewable and said plural artificial satellites are viewable in turn within a pre-defined range of operational elevation angle at an arbitrary location within said pre-defined service area;

    arranging each orbit of said plural artificial satellites on an individual orbital plane according to a designated service hour, and said individual orbit is located in a range where an orbital inclination angle is 63.4 degrees or closer to Japan; and

    providing a right ascension of a north-bound node of said individual artificial satellite which is separated approximately at regular intervals.

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