2 results about "Active phase" patented technology

The amplitude modulation wave phase-locked laser ranging method and device belong to the laser ranging technology; the present invention uses an amplitude modulated light wave phase-locked amplifier at the target end of the active phase ranging device; the measuring end of the ranging system sends a beam of light intensity through Sinusoidally modulated beam, the target end of the ranging system performs phase-locked amplification on the received amplitude modulated optical signal from the measurement end, generates a laser signal with the same modulation frequency as the laser signal from the measurement end and has a constant difference, and sends it back to the measurement end. The measurement terminal realizes the distance measurement by detecting the phase difference between the sending and receiving signals and combining the constant phase difference; it has the characteristics of high ranging accuracy.