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Real-time time-difference-of-arrival (TDOA) estimation via multi-input cognitive signal processor

  • US 10,720,949 B1
  • Filed: 03/07/2019
  • Issued: 07/21/2020
  • Est. Priority Date: 03/19/2015
  • Status: Active Grant
First Claim
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1. A system for estimating time-difference-of-arrival (TDOA) of incoming signals, the system comprising:

  • a multi-input cognitive signal processor (CSP) and a non-transitory computer-readable medium having executable instructions encoded thereon such that when executed, the multi-input CSP performs operations of;

    receiving a mixture of input signals from an antenna a and an antenna b;

    predicting and temporally de-noising an input signal a received from antenna a using a first input of the multi-input CSP, resulting in a de-noised state vector for input signal a;

    predicting and temporally de-noising an input signal b received from antenna b using a second input of the multi-input CSP, resulting in a de-noised state vector for input signal b;

    using the de-noised state vectors for one of input signals a and b, cross-predicting and spatially de-noising the other of the de-noised state vectors for input signals a and b; and

    estimating TDOA values of signal pulses to each of antennas a and b.

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