Photoelectric signal processing device of laser guiding system

Abstract

The invention discloses a photoelectric signal processing device of a laser guiding system. The photoelectric signal processing device comprises a laser echo receiving unit, a photoelectric detector, a photoelectric signal processing circuit and a filter connector. An input end of the photoelectric detector is connected to an output end of the laser echo receiving unit. An input end of the photoelectric signal processing circuit is connected to an output end of the photoelectric detector. An input end of the filter connector is connected to an output end of the photoelectric signal processing circuit. The photoelectric signal processing device is high in interference resistance, wide in dynamic range, and capable of effectively reducing even-order harmonics in signal transmission and further reducing distortion; the laser echo receiving unit, the photoelectric detector, an optical system and the filter connector are combined to form a metal-enclosed space; in addition, a shortest path is selected for sending voltage signals output by the photoelectric detector to the photoelectric signal processing circuit, so that the noise interference of the external environment is avoided.

Description

technical field [0001] The invention belongs to the technical field of laser guidance, and more specifically relates to a photoelectric signal processing device of a laser guidance system. Background technique [0002] In the laser semi-active guidance system, a four-quadrant photodetector is usually used to detect the target azimuth. When the target deviates, due to the change of the radiation flux between the quadrants, the photocurrent output by each quadrant changes, and the electrical signal output by the four-quadrant detector will also change accordingly. After a series of processing, the photoelectric signal will get the target angle value. Therefore, the processing of the photoelectric signal is very important, and its processing quality directly affects the accuracy of the target angle value. [0003] The laser echo signal is received by a series of optical lenses and converted into four electrical signals by photodetectors. Usually, these four electrical signals...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the object of the present invention is to provide a photoelectric signal processing device for the laser guidance system, aiming to solve the problem of low measurement accuracy caused by the poor anti-interference ability of the laser guidance system in complex environments

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