Gesture recognition using frequency modulated continuous wave (FMCW) radar with low angle resolution
First Claim
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1. A method for operating a frequency modulated continuous wave (FMCW) radar system, the method comprising:
- generating digital intermediate frequency (IF) signals from radio frequency signals received by a small receive antenna array in the FMCW radar system;
computing a sequence of weighted velocities based on the digital IF signals;
detecting at least one peak in the sequence of weighted velocities; and
performing gesture classification based on parameters of the at least one peak to determine whether or not the at least one peak is indicative of a gesture.
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Abstract
A method for operating a frequency modulated continuous wave (FMCW) radar system is provided that includes generating digital intermediate frequency (IF) signals from radio frequency signals received by a small receive antenna array in the FMCW radar system and processing the digital IF signals to determine whether or not a gesture was performed.
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Citations
20 Claims
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1. A method for operating a frequency modulated continuous wave (FMCW) radar system, the method comprising:
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generating digital intermediate frequency (IF) signals from radio frequency signals received by a small receive antenna array in the FMCW radar system; computing a sequence of weighted velocities based on the digital IF signals; detecting at least one peak in the sequence of weighted velocities; and performing gesture classification based on parameters of the at least one peak to determine whether or not the at least one peak is indicative of a gesture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A frequency modulated continuous wave (FMCW) radar system comprising:
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a small receive antenna array; a receive channel for each receive antenna in the receive antenna array, each receive channel coupled to a respective receive antenna to generate a digital intermediate frequency (IF) signal from a radio frequency signal received by the receive antenna array; a digital front end coupled to receive the digital IF signals and produce digital baseband signals; and a processor coupled to each receive channel to process the digital baseband signals, compute a sequence of weighted velocities from the baseband signals, and detect at least one peak in the sequence of weighted velocities to determine whether or not a gesture was performed. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for operating a frequency modulated continuous wave (FMCW) radar system, the method comprising:
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generating digital baseband signals from radio frequency signals received by an antenna array of the FMCW radar system; computing a sequence of weighted velocities from the digital baseband signals; detecting at least one peak in the sequence of weighted velocities; and performing gesture classification based on parameters of the at least one peak to determine whether or not the at least one peak is indicative of a gesture. - View Dependent Claims (20)
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Specification