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System for positioning a terrestrial user

  • US 8,106,815 B2
  • Filed: 06/19/2008
  • Issued: 01/31/2012
  • Est. Priority Date: 07/10/2007
  • Status: Expired due to Fees
First Claim
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1. A system for positioning a terrestrial user, said system comprising:

  • a first plurality of navigation satellites placed in medium altitude orbits; and

    a second plurality of management satellites placed in high orbits, able to at least partially manage said navigation satellites and to communicate with the Earth, wherein;

    said second plurality comprises a set of at least three management satellites each placed in a high orbit, whose plane is inclined with respect to the plane of the terrestrial equator and cuts the latter along a diametral straight intersection line with respect to the Earth; and

    the two external diametral straight intersection lines make between themselves an angle of longitude at least equal to 90°

    .

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