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Navigation system using GPS data

  • US 5,948,043 A
  • Filed: 11/08/1996
  • Issued: 09/07/1999
  • Est. Priority Date: 11/08/1996
  • Status: Expired due to Term
First Claim
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1. A method for tracking an object using an electronic map and GPS data, comprising the steps of:

  • determining whether said GPS data is reliable;

    updating said object'"'"'s position based on said GPS data if said GPS data is determined to be reliable; and

    matching said object'"'"'s updated position to said electronic map if said GPS data is determined to be reliable, said step of matching is performed without using data from navigation sensors other than one or more GPS sensors.

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