RANGE FINDING METHOD AND RANGE FINDING RADIO TRANSMITTER RECEIVER

摘要

PURPOSE:To accurately measure a distance by requesting a stop of counting of a non-modulated wave simultaneously upon starting of counting of a wave number of the non-modulated wave during receiving, and calculating the distance from a counted value from the start to the top of the counting and a predetermined frequency. CONSTITUTION:When a mode changeover switch SW3 is closed, a range finding controller 2 closes a switch SW4, and a non-modulated wave is transmitted from a non-modulated wave generator 11 to a counterpart station via a transmitting amplifier. A receiving amplifier 61 applies the wave from a counterpart station to a range finding receiver 32. The wave of the receiver 32 is applied to a mixer via an amplifier. An output of a voltage controlled oscillator is also applied to the mixer, and a regenerated non-modulated wave is output. The regenerated wave is converted into a pulse at a waveform-shaped part via the amplifier, and applied to a counter 33 via a switch of ON state, The counter 33 obtains a distance by using a counted number and a wavelength of the received frequency, and the distance is displayed on a display unit.