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System and method for the mitigation of multipath and the improvement of signal-to-noise ratios in time division multiple access(tdma) location networks

  • US 20060012521A1
  • Filed: 09/19/2003
  • Published: 01/19/2006
  • Est. Priority Date: 09/20/2002
  • Status: Active Grant
First Claim
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1. A method for mitigating multipath and improving received signal-to-noise ratios in a Time Division Multiple Access location network, the method comprising:

  • a) deploying a plurality of chronologically synchronized positioning-unit devices, positioned at known locations, and transmitting positioning signals in a predetermined Time Division Multiple Access sequence, such that each said positioning-unit device transmits a unique positioning signal in a unique transmission time slot;

    b) deploying a position receiver configured with a directionally agile beam antenna;

    c) receiving and interpreting said unique positioning signals to determine directionally agile beam antenna circumstance;

    d) consecutively steering said directionally agile beam antenna, based on said determined directionally agile beam antenna circumstance, in spatial synchronization with said Time Division Multiple Access positioning-unit device positioning signal transmissions, such that said directionally agile beam antenna directional gain pattern remains oriented toward the currently transmitting positioning-unit device, or remains oriented toward the origin of the currently received positioning-unit device positioning signal.

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