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Correction system of laser atmospheric transmission inclination

A laser atmospheric transmission and tilt correction technology, which is applied in the transmission system, electromagnetic wave transmission system, free space transmission and other directions, can solve the problems affecting the tracking accuracy of the target tracking system, light wave amplitude and phase fluctuations, etc., to achieve precise tracking and real-time The effect of correction

Inactive Publication Date: 2012-12-19
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

[0002] When the laser is transmitted in the atmosphere, due to the effect of atmospheric turbulence, the amplitude and phase of the light wave will fluctuate, which will seriously affect the tracking accuracy of the target tracking system

Method used

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  • Correction system of laser atmospheric transmission inclination
  • Correction system of laser atmospheric transmission inclination
  • Correction system of laser atmospheric transmission inclination

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Embodiment Construction

[0028] like figure 2 shown. The beacon light uses a laser as the beacon light (target). The collimated light pipe receives the beacon light from one kilometer, and the beacon light is collimated into parallel light by the collimated light pipe; the parallel light is reflected by the inclined mirrors in the X and Y directions and enters the Cassegrain system; Cassegrain is in the system. The function is to lengthen the focal length of the optical system and enlarge the inclination amount. The focal length of this system is 25.3m. The light from the Cassegrain system is split by the beam splitter, and part of it enters the PSD detector, and part of it enters the entrance of the laser. When the center of gravity of the light spot of the PSD detector is in the center, the other part of the light can be at the light exit of the laser. According to the principle of reversibility of the optical path, the light emitted from the laser can track the beacon light (target). If the cen...

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Abstract

The invention discloses a correction system of laser atmospheric transmission inclination. Beacon light transmitted by a laser to the atmosphere is received by a collimator and collimated into parallel light by the collimator, the parallel light is incident to a tilting mirror and incident to a Cassegrain system after the parallel light is sequentially reflected by the tilting mirror along an X direction and a Y direction, the emergent light of the Cassegrain system is incident to a spectroscope and is divided into transmitted light and reflected light by the spectroscope, the transmitted light is incident to a transmission laser from a light outlet of the transmission laser, the reflected light is incident to a PSD detector, the PSD detector converts a light signal into an electric signal, the electric signal is transmitted to a processor unit after the electric signal passes through a multi-path detection circuit of the PSD detector, the processor unit calculates the offset of the inclination angle of the tilting mirror according to the light signal measured by the PSD detector, an analog offset signal is transmitted to a direct-current high-voltage amplification unit after a digital offset signal is converted into the analog offset signal by a D / A conversion and low-voltage amplification circuit, a piezoelectric ceramic drive circuit in the direct-current high-voltage amplification unit receives the analog offset signal, and piezoelectric ceramics is driven to stretch or contract according to the analog offset signal and drives the tilting mirror to rotate at a corresponding angle.

Description

technical field [0001] The invention relates to the fields of atmospheric optics and electronics, in particular to a system for correcting the inclination generated during laser atmospheric transmission and improving beam quality, in particular to a laser atmospheric transmission inclination correction system. Background technique [0002] When the laser is transmitted in the atmosphere, due to the effect of atmospheric turbulence, the amplitude and phase of the light wave will fluctuate, which will seriously affect the tracking accuracy of the target tracking system. In the target tracking system, the beacon light received by the telescope is affected by atmospheric turbulence, resulting in the expansion and jitter of the tracking imaging spot, while the tracking accuracy of the tracking system is mainly caused by the atmospheric turbulence and the jitter of the telescope; laser atmospheric transmission tilt correction The purpose of the system is to correct the spot jitter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/10G02B26/08H04B10/11
Inventor 谭逢富侯再红陈修涛吴毅何枫秦来安
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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