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Interbuilding and urban canyon extension solution for global positioning systems

  • US 5,990,826 A
  • Filed: 10/07/1997
  • Issued: 11/23/1999
  • Est. Priority Date: 10/07/1997
  • Status: Expired due to Term
First Claim
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1. A receiver unit for use with a plurality of transmitters, each transmitter emitting a limited range receive position signal indicative of a position of the transmitter, the receiver unit comprising:

  • a receiver circuit for receiving the limited range receive position signal;

    a transmitter circuit; and

    a storage buffer coupled to the transmitter circuit, the storage buffer storing an identification code, the transmitter circuit transmitting a transmit position signal indicative of the limited range receive position signal and the identification code.

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