| 摘要 |
<P>PROBLEM TO BE SOLVED: To inexpensively realize a distance measurement device and distance correction means which can perform intercommunication between first transmission/reception means and second transmission/reception means in a time division manner by using a single wireless frequency to measure distance between the first transmission/reception means and the second transmission/reception means with high accuracy. <P>SOLUTION: First transmission/reception means intermittently transmits wireless signals including at least a starting point signal. When second transmission/reception means receives the wireless signals, the second transmission/reception means demodulates the starting point signal from the received wireless signals, and also detects and corrects a transmission phase error or a transmission delay error to transmit wireless signals including a distance measurement signal synchronized with the corrected starting point signal at a time division timing in return. The first transmission/reception means demodulates the distance measurement signal received from the second transmission/reception means, and also detects and corrects a transmission phase error or a transmission delay error, then measures a transmission phase or transmission delay of the corrected distance measurement signal based on the starting signal generated by the means itself to calculate a distance between the means and the second transmission/reception means with high accuracy. <P>COPYRIGHT: (C)2012,JPO&INPIT |
