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A method to more accurately measure the sound wave arrival time and position the distance using the Chirp signal in a vehicle opening/closing system using sound wave communication.
A method to more accurately measure the sound wave arrival time and position the distance using the Chirp signal in a vehicle opening/closing system using sound wave communication.
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机译:一种更精确地测量声波到达时间的方法,使用声波通信使用车辆打开/关闭系统中的啁啾信号定位距离。
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摘要
A method of accurately measuring the arrival time of sound waves and locating the distance is disclosed. The arrival time is measured by calculating the correlation value for each channel, but reliability can be improved by removing the influence of the reflected wave and verifying it.
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