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Target localization using TDOA distributed antenna

  • US 7,170,441 B2
  • Filed: 08/09/2004
  • Issued: 01/30/2007
  • Est. Priority Date: 08/14/2003
  • Status: Active Grant
First Claim
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1. A method of locating a target, comprising the steps of:

  • transmitting a signal from a single transmitter to a target;

    receiving a return signal from the target using at least one receiver;

    calculating the round trip delay (RTD) from the transmitter to the target to said at least one receiver;

    receiving a signal from the target using at least three receivers;

    determining the Time of Arrival (TOA) of the signals at each receiver;

    calculating a measured Time Differential of Arrival (TDOA) using the TOA from each receiver; and

    using the measured TDOA and the RTD data to calculate at least a position estimate of the target.

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