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Method for controlling array light beam co-target collimation of target in loop based on light spot centroid calculation

An array beam and control method technology, which is applied in the control, optics and optical components using feedback, can solve the problem that the beam co-target control method is not described in detail, and achieves the control scheme is simple and easy to implement, has obvious effect, and has a wide range of wide effect

Active Publication Date: 2014-06-04
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

At present, foreign units that conduct target-in-the-loop experiments include the US Army Laboratory and the French Aerospace Laboratory, but they have not described in detail the method of beam common target control

Method used

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  • Method for controlling array light beam co-target collimation of target in loop based on light spot centroid calculation
  • Method for controlling array light beam co-target collimation of target in loop based on light spot centroid calculation
  • Method for controlling array light beam co-target collimation of target in loop based on light spot centroid calculation

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Embodiment Construction

[0038] like figure 1 As shown, the entire system includes a laser array 1 , a beam controller array 2 , a tilting mirror array 3 , a telescope system 4 , a target 5 , an imaging device 6 , a spot centroid coordinate generator 7 , and a tilting mirror controller 8 . The light output by the laser array 1 enters the telescope system 4 after passing through the beam controller array 2 and the tilting mirror array 3, the outgoing light is transmitted to the target 5 through the atmosphere, and the backscattered light reflected by the target is transmitted to the imaging device 6 through the atmosphere , the imaging device data is sent to the spot centroid coordinate generator 7, and the spot centroid coordinate generator 7 uses digital image processing technology to solve the coordinates of the spot centroid relative to the center of the imaging device through the centroid algorithm, and the tilting mirror controller 8 according to the spot centroid coordinates and tilt The quanti...

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Abstract

The invention relates to a method for controlling array light beam co-target collimation of a target in a loop based on light spot centroid calculation. The coordinates of the centroid of a light spot on an imaging plane are obtained through a light spot centroid algorithm, a tilt control quantity which needs to be conducted on each light beam is obtained according to the quantitative relation between tilt control of a tilting mirror of the corresponding light beam and a light spot movement vector, and the centroid of the light spot is moved to a target spot of an image device through control over the tilting mirrors. Co-target collimation of all the light beams of the target in the loop is realized through sequential control cover the array light beams. There is no need to accurately describe or obtain a light path, and a control scheme is simple and convenient and easy to implement. The adopted centroid of the light spot serves as a performance evaluation function which is simple, convenient, high in real-time performance, and remarkable in effect, and consumes a short time. The method for controlling array light beam co-target collimation of the target in the loop based on light spot centroid calculation has extensive application prospects in satellite tracking, the directed energy technology and other fields.

Description

technical field [0001] The invention relates to a light beam control method, in particular to a target-in-loop array beam co-target aiming control method based on calculation of spot centroid. Background technique [0002] The tilt control of the beam is very important for stabilizing the axial position of the beam, which is of great significance in astronomical observation, laser communication, laser radar, tracking and aiming of optical systems, and directed energy technology. Especially in the array beam combination system, multi-beam co-targeting can be realized by controlling the beam tilt. Co-targeting has a crucial impact on the coherence control of the combined beam of the target in the loop. In the coherent combination of the target, the SPGD algorithm is mainly used to optimize the control of the tilted wavefront. When the light spots of each unit in the far field always overlap, the algorithm can effectively correct the tilt error. But when the unit beams are co...

Claims

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Application Information

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IPC IPC(8): G02B26/08G02B26/10G05D3/12
Inventor 支冬马阎星司磊吴武明宁禹罗成王小林周朴许晓军陈金宝刘泽金
Owner NAT UNIV OF DEFENSE TECH
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