Patent ID: 6439892
Filing Date: 2002-08-27
Classification: F41A,F41G,G01S

Abstract:
A laser identification system comprising at least one laser device for identifying at least one target device, wherein said laser device is designed to transmit a coded laser beam, and wherein said target device has sensor means for detecting this laser beam and converting it to electrical signals, which are provided to a discriminator, and said target device also contains transmitting means for returning reports on the basis of decisions made in the discriminator to receiver means located inside or outside of the laser device,said laser device being designed for emitting a tightly bundled laser beam and containing chopper means for emitting a laser beam which is not only encoded, but also chopped at a predeterminable frequency, and the sensor means of said target device contain means for obtaining an alternating electrical signal from the received chopped laser beams, which is supplied to a pre-amplifier connected upstream of the discriminator.