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System and method for fast initialization of navigational satellite signal receivers

  • US 7,324,045 B2
  • Filed: 05/06/2005
  • Issued: 01/29/2008
  • Est. Priority Date: 05/06/2005
  • Status: Expired due to Fees
First Claim
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1. A method of reducing initialization time of a satellite signal receiver, comprising the steps of:

  • dividing navigational satellites of a positioning system into a plurality of groups such that each group has a fixed number of said navigational satellites uniformly distributed over entire surface of Earth; and

    configuring said receiver such that said receiver searches for navigational satellite signals per group in an assigned order to acquire a first satellite signal;

    generating a two-dimensional (2D) matrix based on slot and plane of each of said navigational satellites;

    whereineach row of said matrix contains unique identifiers of said navigational satellites;

    wherein each row has a target satellite; and

    whereineach row is sorted by distance or proximity of each remaining navigational satellite in relation to said target satellite;

    acquiring additional navigation satellite signals;

    computing receiver position using the acquired first and additional satellite signals; and

    displaying the computed receiver position.

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