High-accuracy laser ranging system performance measurement device and method

A technology for measuring lasers and ranging systems, applied in the field of optical detection, can solve the problems of affecting the command and combat purpose, single function, various types of detection and maintenance equipment, etc., and achieve the effect of simple self-checking method and simple operation.

Active Publication Date: 2018-12-04
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the current high-intensity actual combat training, once the laser ranging system fails, it will affect the command's combat purpose
Due to the inability to universally solve the detection and maintenance problems of laser ranging systems for infantry, artillery, armored troops, and sea defense island troops, the problems of detection and maintenance equipment with various types, single functions, large funds and resources, and low support efficiency have been difficult to solve for a long time

Method used

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  • High-accuracy laser ranging system performance measurement device and method
  • High-accuracy laser ranging system performance measurement device and method

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Embodiment Construction

[0023] The implementation examples of the method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] The main devices adopted in the present invention are described as follows:

[0025] 1) Collimator 2: The off-axis reflective collimator adopts ordinary processing, the telescope aperture is 350mm, the telescope focal length is 2m, and the parabolic surface requires RMS better than 1 / 20λ@632.8nm.

[0026] 2) Laser energy controllable attenuation device 3: Thorlabs company model NDC-25C-4, attenuation efficiency from 0 to (-40)db, diameter Φ25mm

[0027] 3) Delayed echo generator component 4: This device is a self-made device, mainly composed of a high-speed detector 4-1, a delayed echo generator 4-2 and a controllable fiber output laser 4-3, and a high-speed detector 4-1 After detecting the pulse signal, use the delayed echo generator 4-2 to generate a certain time-delayed analog echo signal, thereby triggering the...

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Abstract

The invention discloses a high-accuracy laser ranging system performance measurement device and method. According to the method, a light splitting function of a dichroic beamsplitter is used, a reticule with a scale and a laser fiber end surface are equidistantly fixed at two sides of the dichroic beamsplitter, and through a fiber, laser generated by a delay echo generator module is transmitted toa detected device through a collimator. The device can be used to measure a laser divergence angle, spot energy and ranging capability of the laser ranging system and can also be used to calibrate the optical axis deviation of laser transmitting and receiving of the detected device. The device and the method disclosed in the invention are applicable to real-time calibration on the performance ofvarious laser ranging systems and are applicable to fields such as coaxial detection for transmitting and receiving of an active and passive-combined optoelectronic system. The system has a fixed focal plane module, the calibration method is simple, and the price is low.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and in particular relates to a device and method for measuring the performance of a laser ranging system with high precision. The device of the invention has a simple structure and strong portability. The test software is simple, convenient and quick to operate, especially suitable for the test requirements of the laser ranging system composed of the aiming device, laser emitting module, and laser receiving module, and the coaxial detection of the photoelectric system with active and passive combination of various lasers and other fields. Background technique [0002] The laser ranging system has now become an important part of the sighting and aiming instruments of various arms of the army; such as the main battle tanks of the armored forces, various types of gunner stabilized image sights of the mechanized infantry fighting vehicles, the commander's peripheral vision sights, and the si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S7/481
CPCG01S7/481G01S17/08
Inventor 王天洪何志平郭颖黄庚华吴金才舒嵘
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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