Method and device for rangefinding using weak laser light pulses

摘要

A method and a device are specified for rangefinding using weak laser light pulses, using which method rangefinding can be carried out using very low energy and with very little beam diversion, over long ranges, using diode lasers. In this case, the light reflected from an object and received is converted into an electrical signal and is amplified. The amplified signal is, of course, subject to noise. The time sequence of the analog output signal from the amplifier is stored, averaged and investigated for the presence of signals.