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Extended angular resolution in sensor arrays using secondary echoes

  • US 9,285,468 B2
  • Filed: 09/28/2012
  • Issued: 03/15/2016
  • Est. Priority Date: 07/12/2012
  • Status: Active Grant
First Claim
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1. A method for resolving an angular direction of an object, the method comprising:

  • transmitting a signal towards an object from a transmitter at transmission time, t0;

    receiving a first echo of the signal from the object at a receiver at receipt time t2;

    directing the first echo of the signal towards the object from a reflector displaced from the receiver;

    receiving the second echo of the signal from the object at the receiver at second receipt time t5; and

    using a processor configured to triangulate an azimuthal angular direction of the object based on a delay between the times t2 and t5, the azimuthal angular direction relative to a line defined by the transmitter and the receiver.

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