| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of measuring distance based on cross-correlation value computation, which offers superior distance measurement accuracy by transmitting an ultrasonic wave having a waveform which tends to make differences more apparent in cross-correlation values at cross-correlation.SOLUTION: A method of measuring distance based on cross-correlation value computation using a distance measurement system 1 having a transmitter 2, a receiver 3, a signal processor 4, and a distance measurement device 5 is provided, where a reference wave and a measurement wave are generated by successively sending normal phase waveform data, reverse phase waveform data, and then normal phase waveform data to the transmitter 2 to produce a waveform having definite amplitude variation. |
