Method for measuring distance and position using spread spectrum signal, and an equipment using the method

Abstract

By using the delay profile created by delay profile creating sectionand the first threshold valuereceived from the first threshold value calculationthe first threshold value timing detection sectionselects only the earliest receive timing exceeding the first threshold value, from all the timing that the correlation value in the delay profile becomes a maximum. By using the receive timing and the second threshold valuereceived from the second threshold value calculation sectionreference timing calculation sectionselects the reference timing required for calculating the receive timing for the incoming wave of the minimum propagation delay time. The timing delayed by previously set timing behind said reference timing is sent from receive timing calculation sectionas the receive timingof the incoming wave of the minimum propagation delay time.