Radar interference mitigation
First Claim
Patent Images
1. A method comprising:
- receiving time domain signals from a radar device, wherein each of the time domain signals is obtained during a sweep of the radar device;
transforming, using a processor, the time domain signals to time-frequency domain signals;
comparing, using the processor, each time-frequency domain signal with one or more previous or subsequent time-frequency domain signals to determine which of the time-frequency domain signals have interference;
repairing, using the processor, the time-frequency domain signals having interference by;
determining a median magnitude of cell values for multiple sweeps of the radar device,determining an average vector difference between the multiple sweeps, andreplacing a magnitude for each sweep having interference with an interpolated magnitude based on the median magnitude of cell values and the average vector difference; and
detecting, using the processor, a target using the repaired time-frequency domain signals.
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Abstract
Various implementations described herein are directed to a method for mitigating radar interference. The method may include receiving time domain signals from a radar device and transforming the time domain signals to time-frequency domain signals. The method may include comparing each time-frequency domain signal with one or more surrounding time-frequency domain signals to determine which of the time-frequency domain signals have interference. The method may include repairing the time-frequency domain signals having interference.
56 Citations
16 Claims
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1. A method comprising:
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receiving time domain signals from a radar device, wherein each of the time domain signals is obtained during a sweep of the radar device; transforming, using a processor, the time domain signals to time-frequency domain signals; comparing, using the processor, each time-frequency domain signal with one or more previous or subsequent time-frequency domain signals to determine which of the time-frequency domain signals have interference; repairing, using the processor, the time-frequency domain signals having interference by; determining a median magnitude of cell values for multiple sweeps of the radar device, determining an average vector difference between the multiple sweeps, and replacing a magnitude for each sweep having interference with an interpolated magnitude based on the median magnitude of cell values and the average vector difference; and detecting, using the processor, a target using the repaired time-frequency domain signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A non-transitory computer-readable medium having stored thereon a plurality of computer-executable instructions which, when executed by a computer, cause the computer to:
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receive time domain waveforms for multiple sweeps of a radar device, wherein each of the time domain waveforms is obtained during a sweep of the radar device; transform the time domain waveforms for the multiple sweeps to time-frequency domain waveforms for the multiple sweeps; determine which of the time-frequency domain waveforms have interference by comparing a magnitude of cell values of each time-frequency domain waveform for each sweep to a first pre-determined magnitude calculated based on magnitudes of cell values of previous or subsequent time-frequency domain waveforms of previous or subsequent sweeps; and repairing, using the processor, the time-frequency domain signals having interference by; determining a median magnitude of cell values for multiple sweeps of the radar device, determining an average vector difference between the multiple sweeps, and replacing a magnitude for each sweep having interference with an interpolated magnitude based on the median magnitude of cell values and the average vector difference. - View Dependent Claims (11, 12, 13)
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14. A method comprising:
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receiving signals in time domain for multiple sweeps of a radar device, wherein each of the time domain signals is obtained during a sweep of the radar device; performing, using a processor, a time-frequency transform on the received signals; examining, using the processor, each signal for each sweep in comparison with previous or subsequent signals for previous or subsequent sweeps to determine which of the signals have interference; repairing, using the processor, the signals in time-frequency domain having interference by; determining a median magnitude of cell values for multiple sweeps of the radar device, determining an average vector difference between the multiple sweeps, and replacing a magnitude for each sweep having interference with an interpolated magnitude based on the median magnitude of cell values and the average vector difference; performing, using the processor, a reverse time-frequency transform on each of the signals in time-frequency domain including the repaired signals in time-frequency domain, thereby providing repaired time domain signals, and detecting, using a processor, a target based on the repaired time domain signals. - View Dependent Claims (15, 16)
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Specification