Radar apparatus and target object detection method
AssigneePanasonic Corporation
InventorsWeijie Liu, Yoichi Nakagawa
Life of this patent
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Abstract
Frequency analysis of each of a plurality of reception antennas and each of reception signals received by the plurality of reception antennas is performed, a power spectrum is calculated for each of the reception antennas, a standard deviation indicating a degree of conformity in a peak of the power spectrum among the plurality of reception antennas is calculated, the power spectra are corrected with use of the standard deviation, a peak is detected based on the corrected power spectra, and a target object is detected based on the detected peak.
Claims8
A radar apparatus comprising:
- a plurality of reception antennas, which in operation, receives one or more reflected waves resulting from reflection of one or more radar transmission signals by one or more objects to output a plurality of reception signals;
- a plurality of frequency analysis processing circuitry, which in operation, performs frequency analysis of the plurality of reception signals to acquire a plurality of frequency characteristics of the plurality of reception antennas;
- conformity calculation circuitry, which in operation, calculates a conformity indication value based on the plurality of frequency characteristics, the conformity indication value indicating how closely waveforms adjacent to a peak of each of the plurality of frequency characteristics match each other;
- a plurality of peak detection circuitry, which in operation, corrects the plurality of frequency characteristics with use of the conformity indication value, and detect a peak value that exceeds a certain threshold from the corrected plurality of frequency characteristics;
- and
- object detection circuitry, which in operation, detects a target object from among the one or more objects based on the detected peak value.
A target object detection method by a radar apparatus, the target object detection method comprising:
- receiving, by a plurality of reception antennas, one or more reflected waves resulting from reflection of one or more radar transmission signals by one or more objects to output a plurality of reception signals;
- performing, by a plurality of frequency analysis processing circuitry, frequency analysis of the plurality of reception signals to acquire a plurality of frequency characteristics of the plurality of reception antennas;
- calculating, by conformity calculation circuitry, a conformity indication value based on the plurality of frequency characteristics, the conformity indication value indicating how closely waveforms adjacent to a peak of each of the plurality of frequency characteristics match each other;
- correcting, by a plurality of peak detection circuitry, the plurality of frequency characteristics with use of the conformity indication value;
- detecting, by the plurality of peak detection circuitry, a peak value that exceeds a certain threshold from the corrected plurality of frequency characteristics;
- and
- detecting, by object detection circuitry, a target object from among the one or more objects based on the detected peak value.
Dependencies are inferred from the claim text.