Wide-field radar-based gesture recognition

  • US 10,664,061 B2
  • Filed: 10/05/2018
  • Issued: 05/26/2020
  • Est. Priority Date: 04/30/2015
  • Status: Active Grant
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First Claim
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1. A computer-implemented method comprising:

  • providing, by an emitter of a radar system, a radar field, the radar field comprising a contiguous radar field;

    receiving, at a receiver of the radar system, a first set of reflection signals caused by a first interaction within the contiguous radar field, the first interaction comprising performing a gesture, the first set of reflection signals corresponding to a first time period during which the gesture is performed within the contiguous radar field;

    receiving, at the receiver of the radar system, a second set of reflection signals caused by a second interaction within the contiguous radar field or another contiguous radar field, the second interaction comprising performing the gesture, the second set of reflection signals corresponding to a second time period during which the gesture is performed within the contiguous radar field or the other contiguous radar field;

    analyzing the first and second sets of reflection signals to determine a signal element common to the first and second sets of reflection signals, the analyzing comprising breaking the first and second sets of reflection signals into many signal elements and determining which of the many signal elements corresponds to both the first interaction performing the gesture and the second interaction performing the gesture, the determined signal element corresponding to the gesture; and

    associating the determined signal element with the gesture effective to enable a later received reflection signal including the determined signal element caused by another interaction within the contiguous radar field or the other contiguous radar field to be associated with the gesture.

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