| 摘要 |
A range measurement system wherein range accuracies of fractions of a meter may be obtained. Nanosecond pulses, one triggered by the transmitter trigger with an appropriate delay and the other triggered by a received echo pulse, are launched from opposite ends of a transmission line. The location on the transmission line at which the two short pulses coalesce and the delay time of the transmitter triggered short pulse establish the range to the echoing object to an accuracy determined by the short pulse, pulse width. |
