Large-aperture follow-up laser semi-active guide lens detection system and method

Abstract

The invention discloses a large-aperture follow-up laser semi-active guide lens detection system and a method, the detection system comprises a lens cone and an optical system arranged in the lens cone, and the optical system comprises an optical filter, a first lens, a second lens and a four-quadrant detector which are sequentially arranged in the direction from light input to light output; wherein the first lens is an aspheric mirror, the second lens is a spherical mirror, and an air distance is arranged between the first lens and the second lens; the optical filter, the first lens, the second lens and the four-quadrant detector are respectively installed on the inner wall of the lens cone through fixing parts, and the defocusing distance of the four-quadrant detector is adjustable through the fixing parts. The detection method is easy to implement, the device is easy to install and adjust, output electric signals of the four-quadrant detector are stable, and the detection system andthe detection method have the advantages of being high in position resolution, high in response speed, long in detection distance and the like.

Description

technical field [0001] The invention belongs to the field of laser detection, and relates to a large-aperture servo laser semi-active guidance lens detection system and method. Background technique [0002] Laser guidance mainly adopts three guidance methods: laser semi-active guidance, laser active guidance and laser beam driving guidance. Among them, laser semi-active guidance is a guidance method with the earliest development, the most mature technology and wide application in the laser guidance system. Its working process is to use an independent laser irradiator to irradiate the designated target, the missile seeker receives the laser echo signal emitted by the target, and then the four-quadrant detector receives the optical signal, and then guides after passing through the signal processing system. At present, domestic laser guidance systems based on four-quadrant detection systems generally have the disadvantages of complex assembly and adjustment, more than 3 lenses...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of complicated installation and design of the laser guidance system in the prior art, to provide a large-aperture follow-up laser semi-active guidance lens detection system and method, easy to implement, simple to install and adjust, four-quadrant The output signal of the detector is stable, and it has the advantages of high position resolution, fast response speed and long detection distance.

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