The invention relates to an
optical fiber laser chaos
laser ranging device and relative method. It is characterized in that: the chaos
optical fiber laser uses the
optical fiber laser to generate chaos laser
signal, and via the
optical fiber coupler II to divide the chaos laser
signal into the detecting light I and the reference light II; the detecting light I via the optical
fiber amplified is amplified to irradiate the object via the laser collimate
system; the reflective wave
signal of object is collected by the
telescope and transformed into
electric signal via the optical electric
detector I; then via A / D converter, the analogue signal is transformed into
digital signal to be input into computer; the reference light II directly irradiates the optical electric
detector II whose properties are same to the optical
fiber amplifier, to transform the optical signal into
electric signal, then via the A / D converter, to be transmitted to the adjustable electric
delay wire to be input into the computer; then attaining the detected distance. The invention uses the chaos laser signal generated by the optical
fiber laser to range, uses the cross-correlation character of chaos laser to extract the laser fly time, with high anti-disturb ability, high
noise tolerance, high accuracy and wider detecting range.