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Method and system for calibrating a location system

  • US 6,784,842 B2
  • Filed: 01/22/2003
  • Issued: 08/31/2004
  • Est. Priority Date: 01/22/2003
  • Status: Expired due to Term
First Claim
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1. A method for calibrating a location system based on RF signals at a facility, comprising:

  • placing one or more identification devices at selected locations in said facility;

    reading information from said one or more identification devices, said reading performed by a portable device;

    sampling the RF environment at a plurality of said selected locations in said facility, said sampling step performed by said portable device;

    signaling data representing said sampled RF environment and corresponding selected location in said facility to a computer;

    maintaining a database in said computer correlating said RF environment data and said information and said selected locations; and

    using said database to calibrate said location system.

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