CN108693516B - Device and method for rapidly measuring performance of laser ranging system - Google Patents
Device and method for rapidly measuring performance of laser ranging system Download PDFInfo
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- CN108693516B CN108693516B CN201810945377.2A CN201810945377A CN108693516B CN 108693516 B CN108693516 B CN 108693516B CN 201810945377 A CN201810945377 A CN 201810945377A CN 108693516 B CN108693516 B CN 108693516B
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/497—Means for monitoring or calibrating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
Abstract
The invention discloses a device and a method for rapidly measuring the performance of a laser ranging system, wherein a dividing plate with a dividing line and the end face of a laser fiber are fixed on two sides of the dividing plate equidistantly by utilizing the light dividing function of the dividing plate, laser generated by a delay echo generator assembly is emitted to inspected equipment through a collimator by the fiber, and a beacon light source output by the fiber is placed on the focal plane of the collimator as indicating light, so that the performance of the laser ranging system is rapidly measured. The device and the method can be used for detecting the divergence angle and the spot energy of laser in the laser ranging system and the ranging capability of the laser ranging system, and can also be used for calibrating the optical axis deviation of laser receiving and transmitting of the detected equipment. The device and the method are also suitable for real-time calibration of the performances of various laser ranging systems, are also suitable for the fields of active and passive combined photoelectric system receiving and transmitting coaxial detection and the like, and have the advantages of fixed focal plane module, simple calibration method and low cost.
Description
Technical Field
The invention belongs to the technical field of optical detection, and particularly relates to a device and a method for rapidly measuring the performance of a laser ranging system, which are particularly suitable for the fields of rapid external field detection requirements of the laser ranging system consisting of a sighting device, a laser emitting module and a laser receiving module, the receiving and transmitting coaxial detection of various laser active and passive combined photoelectric systems and the like.
Background
The laser ranging system is now an important component of various army arms sighting instruments; for example, a soldier army main battle tank, various gun-length image stabilizing sighting telescope, a vehicle length periscope sighting telescope, a sighting guidance instrument and the like of a mechanical infantry combat vehicle, and a laser ranging system can realize rapid, accurate and convenient modernization equipment for searching and observing, target ranging and azimuth measuring; because the technology of light, electricity, sensor and the like are integrated, the structure is complex, and the failure rate is higher. Particularly, in the current high-intensity actual combat training, once a laser ranging system fails, the combat purpose of command can be affected. The problems of multiple types of detection maintenance equipment, single function, multiple expenditure resources and low guarantee efficiency are difficult to solve for a long time because the detection maintenance problems of the laser ranging system of infantry, artillery, armored soldier and sea defense island army cannot be solved in a generalized way. To solve these problems, it is increasingly necessary to measure all indexes uniformly by an integrated method. Aiming at the current situation of the detection technology and means of the laser ranging system, the research on the universal performance detection technology and means which can be used in the wild and indoor, the individual soldier and vehicle-mounted, the army level and the base level and meet the requirements of various army laser ranging systems is urgently needed; can provide a certain support for the army equipment guarantee power construction. For a laser optical instrument, the optical axis registration degree is one of key technical indexes of the instrument, the change of an optical axis directly affects the detection level of the system, and along with the expansion of the application range of various optical instruments and the improvement of application requirements, the requirements on the stability and the optical axis registration precision of the optical instrument are higher and higher, and the requirements on the ground calibration and the performance test of the optical instrument are also put forward. The detection capability indexes of the laser remote sensing system mainly comprise system ranging accuracy, detection range (maximum range and minimum range), ranging resolution and detection probability (false alarm rate and false alarm rate). The change of the optical axis registration degree directly affects the detection capability of the system, which requires standard instruments or equipment to test the system and timely mark the change condition.
Disclosure of Invention
The invention aims to provide a device and a method for rapidly measuring the performance of a laser ranging system. The invention uses the light splitting function of the color separation film, fixes the dividing plate with the dividing line and the end face of the laser fiber on the two sides of the color separation film equidistantly, transmits the laser generated by the delay echo generator component to the inspected equipment through the fiber through the collimator, and simultaneously places the beacon light source output by the fiber on the focal plane of the collimator as the indication light. The system can be used for detecting the divergence angle and the spot energy of laser in a laser ranging system and the ranging capability of the laser ranging system, and can also be used for calibrating the optical axis deviation of laser receiving and transmitting of the detected equipment. The system is suitable for real-time calibration of the performances of various laser ranging systems, is also suitable for the fields of active and passive combined photoelectric system receiving and transmitting coaxial detection and the like, and has the advantages of fixed focal plane module, simple calibration method and low cost.
The detection device of the method is shown in the accompanying figure 1: the device consists of an optical fiber output beacon light source 1, a color separation film 2, a laser energy controllable attenuation device 3, a time delay echo generator component 4, an attenuation device 5, an illumination device 6, a reticle 7 with a reticle, a detection camera 8, a light splitting sheet 9, a collimator 10 and a corner reflector 12. The optical fiber end face of the optical fiber output beacon light source 1, the optical fiber end face of the delayed echo generator component 4 and the reticle 7 with the reticle are all placed at the focal plane of the collimator 10, the optical fiber output beacon light source 1 is started first, the beacon light source is collimated and output through the collimator 10 after passing through the color separation film 2 and the light separation film 9, and the output light aims at the tested laser ranging system 11; the laser ranging system 11 to be measured is aligned with the optical fiber output beacon light source 1 by utilizing the sighting device 11-1, laser in the laser ranging system 11 to be measured is started, the laser is converged on the reticle 7 with the reticle through the collimator 10, the illumination device 6 is started to illuminate the reticle 7 with the reticle, the laser energy is controlled to be at proper intensity by utilizing the attenuation device 5, the size of a laser spot on the reticle 7 with the reticle is observed by the detection camera 8, and the ratio of the size of the laser spot to the focal length of the collimator 10 is the laser divergence angle of the laser ranging system 11 to be measured; the laser pulse signals scattered on the reticle 7 with the reticle are collected by the delay echo generator component 4, the delay echo generated by the pulse signals is emitted through the end face of the emergent optical fiber of the delay echo generator component 4, collimated output is carried out through the collimator 10, whether the receiving and transmitting coaxiality is kept good is judged by whether the laser receiving module 11-3 of the tested laser ranging system 11 detects the signals, meanwhile, the size of the output signals can be controlled by the laser energy controllable attenuation device 3, and accordingly the ranging capability of the tested laser ranging system 11 to different distances is simulated.
The corner reflector 12 is arranged at the position of the laser ranging system to be measured to carry out self-detection on the measuring device.
The optical fiber output beacon light source 1 adopts a 532nm laser, and the output power is 2.5mw.
The color separation film 2 reflects 532nm and transmits laser of a laser ranging system to be measured; the light passing surface shape deviation RMS value lambda/10@632.8nm.
The beam splitter 9 reflects the optical fiber output beacon light source 1, reflects and transmits the laser of the tested laser ranging system, the beam splitting ratio is between 4:6 and 6:4, and the surface shape deviation RMS value lambda/10@632.8nm of the light passing surface.
The delay echo generator assembly 4 consists of a high-speed detector 4-1, a delay echo generator 4-2 and a controllable optical fiber output laser 4-3; wherein the high-speed detector 4-1 adopts a wide corresponding wavelength range; the delay echo generator 4-2 can carry out beam shaping and delay pulse time, and control the optical fiber output laser 4-3 to be matched with the wavelength and pulse of the emitted laser of the tested laser ranging system (11).
The spectral range of the illumination source of the illumination device 6 needs to partially cover the detection wavelength of the detection camera 8.
The rear intercept of the collimator 10 is larger than the external dimension of the focal plane module with the beacon light.
The specific method comprises the following steps:
1 firstly, a standard parallel light source is placed in front of a collimator 10, the wavelength of the parallel light source is the same as the wavelength of the laser to be measured, then a reticle 7 with a reticle is fixed near the focal plane of the collimator 10, the size of an imaging light spot on the reticle 7 with the reticle is observed by a detection camera 8, the position of the reticle 7 with the reticle is adjusted to minimize the light spot, and the reticle 7 with the reticle is fixed.
2 before the reticle 7 with the reticle, the incident light is divided into two beams, the transmission channel forms an image on the reticle 7 with the reticle, the reflection channel generates another focus, the light guiding optical fiber in the delay echo generator assembly 4 is fixed near the focus, the output optical fiber of the delay echo generator assembly 4 is used for emitting laser, the laser wavelength is the same as the measured laser wavelength, the corner reflector 12 is placed in front of the collimator 10, then the front and back positions of the light emitting optical fiber end face of the delay echo generator assembly 4 are adjusted, and the output optical fiber of the delay echo generator assembly 4 is fixed no matter the corner reflector 12 is placed at any position of the transmission collimator and is fixed until the light spot at the reticle is fixed.
And 3, adding a color separation film 2 in front of the delay echo generator assembly 4, placing an output optical fiber of the optical fiber output beacon light source 1 at the focus of the reflection channel, converging the optical fiber output beacon light source 1 at the focus of the standard collimator after passing through the color separation film 2, the light separation film 9 and the collimator 10, adjusting the position of the optical fiber end face of the optical fiber output beacon light source 1 to enable the imaging light spot of the standard collimator to be minimum, overlapping with the laser light spot emitted by the delay echo generator assembly 4, and finally fixing the optical fiber end face of the optical fiber output beacon light source 1.
4, starting the optical fiber output beacon light source 1, collimating the beacon light by the collimator 10, coarsely aligning the beacon light to the tested laser ranging system 11, adjusting the azimuth and pitching angle by using the aiming device 11-1 of the tested laser ranging system 11, enabling the beacon light collimated by the collimator 10 by the optical fiber output beacon light source 1 to be imaged at the center of the aiming device 11-1 of the tested system 11, and closing the beacon light.
5, aligning the aiming system 11-1 of the tested system 11 with the cross wire of the reticle 7 with the reticle by utilizing the reticle 7 illuminated by the illumination device 6, starting laser in the tested laser ranging system 11, measuring the relative positions of the light spot and the cross wire of the reticle 7 with the reticle by utilizing the detection camera 8, and the position difference of the light spot and the cross wire, namely representing the deviation of the optical axes of the aiming device 11-1 and the laser emitting module 11-2 in the tested laser ranging system 11;
6, after the reticle 7 with the reticle is irradiated by laser, part of scattered pulse light is detected by the high-speed detector 4-1, the signal is used as an initial pulse, the delayed echo generator 4-2 is used for generating delayed echo and then controlling the laser to emit the same pulse light, the pulse light is emitted through the optical fiber of the controllable optical fiber output laser 4-3, the emitted light is detected by the laser receiving module 11-3 in the measured laser ranging system 11 after being collimated by the collimator, and whether the receiving and transmitting axes of the measured laser ranging system 11 are registered or not is judged by observing the receiving response of the laser receiving module 11-3.
7 the attenuation device 3 can be controlled by laser energy to simulate laser energy at different positions so as to observe the response capability of the tested laser ranging system 11.
Through the above test, the coaxiality of the aiming system, the laser emission system and the laser receiving system in the tested laser ranging system 11 can be obtained; the beam quality of the laser emission system; test range of the laser receiving system, etc.
The invention is characterized in that:
1) The self-checking method is simple, low in cost and suitable for field work.
2) The invention can test the functional index of the ranging system.
3) The invention can realize rapid optical axis alignment and is convenient to operate.
Drawings
Fig. 1 is a schematic diagram of the invention.
Fig. 2 is a schematic workflow diagram of the invention.
Detailed Description
Examples of the implementation of the method according to the invention are described in detail below with reference to the accompanying drawings.
The main devices employed in the present invention are described below:
1) Optical fiber output beacon light source 1: the green laser of vincrist industry is adopted, the model of the laser is LFM520, and the output power is 2.5mw.
2) Color separator 2 Therlabs model FGB25 color separator was used, with major performance parameters: adopts 532nm total reflection and 1064 half reflection and half transmission, the clear aperture phi is 25mm, and the surface shape is better than lambda/10@632.8nm.
3) The laser energy controllable attenuation device 3: the model of Thorlabs is NDC-25C-4, the attenuation efficiency is from 0 to (-40) db, and the caliber phi is 25mm
4) Delay echo generator assembly 4: the device is self-made and mainly comprises a high-speed detector 4-1, a delay echo generator 4-2 and a controllable optical fiber output laser 4-3, wherein after the high-speed detector 4-1 detects a pulse signal, the delay echo generator 4-2 is used for generating a certain delay analog echo signal, so that the laser output light of the optical fiber output laser 4-3 is triggered, and a laser signal of a delay echo is generated;
5) The attenuation device 5 adopts model number NDC-50C-4 of Thorlabs, the attenuation efficiency is from 0 to-40 dB, and the total light transmission caliber is phi 50mm;
6) The lighting device 6 adopts a wide spectrum light source of Shenzhen Xin Sihe photoelectric company, and the power is 2W.
7) Reticle 7 with reticle the differentiation plate was customized using Chengdu Yao spectral optics, inc.
8) Detection camera 8: the main performance parameters of the beam analyzer used were SP620, a model number of spiracon, usa: the working wave band is 190nm-1100nm, the pixel size is 4.4um by 4.4um, and the number of pixels is 1600 by 1200;
9) The beam splitter 9 adopts FGL1000 beam splitter with the model number of Thorlabs, and the main performance parameters are as follows: adopts 532nm total reflection and 1064 total transmission, and the clear aperture is 25mm. Surface is better than lambda/10@632.8nm
10 Collimator 10): the aperture of the telescope is 300mm, the focal length of the telescope is 2m, and the surface type requirement RMS is better than 1/20λ@632.8nm by adopting a common processed transmission collimator.
11 Angle reflector 12): the pyramid prism with the model PS971 of Thorlabs is adopted, and the main performance parameters are as follows: the surface shape of the light-transmitting surface is better than lambda/10@632.8nm; the rotation precision is less than 3', the light transmission caliber is 25.4mm, and the light transmission range is 400-1100.
In the embodiment, the schematic diagram of the device of the invention is shown in fig. 1, and the specific steps are as follows
1 firstly, a standard parallel light source is placed in front of a collimator 10, the wavelength of the parallel light source is the same as the wavelength of the laser to be measured, then a reticle 7 with a reticle is fixed near the focal plane of the collimator 10, the size of an imaging light spot on the reticle 7 with the reticle is observed by a detection camera 8, the position of the reticle 7 with the reticle is adjusted to minimize the light spot, and the reticle 7 with the reticle is fixed.
2 before the reticle 7 with the reticle, the incident light is divided into two beams, the transmission channel forms an image on the reticle 7 with the reticle, the reflection channel generates another focus, the light guiding optical fiber in the delay echo generator assembly 4 is fixed near the focus, the output optical fiber of the delay echo generator assembly 4 is used for emitting laser, the laser wavelength is the same as the measured laser wavelength, the corner reflector 12 is placed in front of the collimator 10, then the front and back positions of the light emitting optical fiber end face of the delay echo generator assembly 4 are adjusted, and the output optical fiber of the delay echo generator assembly 4 is fixed no matter the corner reflector 12 is placed at any position of the transmission collimator and is fixed until the light spot at the reticle is fixed.
And 3, adding a color separation film 2 in front of the delay echo generator assembly 4, placing an output optical fiber of the optical fiber output beacon light source 1 at the focus of the reflection channel, converging the optical fiber output beacon light source 1 at the focus of the standard collimator after passing through the color separation film 2, the light separation film 9 and the collimator 10, adjusting the position of the optical fiber end face of the optical fiber output beacon light source 1 to enable the imaging light spot of the standard collimator to be minimum, overlapping with the laser light spot emitted by the delay echo generator assembly 4, and finally fixing the optical fiber end face of the optical fiber output beacon light source 1.
4, starting the optical fiber output beacon light source 1, collimating the beacon light by the collimator 10, coarsely aligning the beacon light to the tested laser ranging system 11, adjusting the azimuth and pitching angle by using the aiming device 11-1 of the tested laser ranging system 11, enabling the beacon light collimated by the collimator 10 by the optical fiber output beacon light source 1 to be imaged at the center of the aiming device 11-1 of the tested system 11, and closing the beacon light.
6, aligning the aiming system 11-1 of the laser ranging system 11 to be measured with the cross wire of the reticle 7 with the reticle by utilizing the reticle 7 with the reticle illuminated by the illumination device 6, starting the laser in the laser ranging system 11 to be measured, measuring the relative positions of the light spot and the cross wire of the reticle 7 with the reticle by utilizing the detection camera 8, and the position difference of the light spot and the cross wire is representative of the deviation of the optical axes of the aiming device 11-1 and the laser emitting module 11-2 in the laser ranging system 11 to be measured;
and after the reticle 7 with the reticle is irradiated by laser, part of scattered pulse light is detected by the high-speed detector 4-1, the signal is used as an initial pulse, the delayed echo generator 4-2 is used for generating delayed echo to control the laser to emit the same pulse light, the pulse light is emitted through the optical fiber of the controllable optical fiber output laser 4-3, the emitted light is detected by the laser receiving module 11-3 in the measured laser ranging system 11 after being collimated by the collimator, and whether the receiving and transmitting axes of the measured laser ranging system 11 are registered or not is judged by observing the receiving response of the laser receiving module 11-3.
8 the response capability of the measured laser ranging system 11 is observed by simulating the laser energy of different positions through the laser energy controllable attenuation device 3.
Through the test, the optical axis matching among the aiming device 11-1, the laser transmitting module 11-2 and the laser receiving module 11-3 in the tested laser ranging system 11 can be obtained; and at the same time, the quality of the laser beam of the laser transmitting module 11-2, the ranging range of the laser receiving module 11-3, etc. can be detected.
Claims (7)
1. The utility model provides a device of quick survey laser ranging system performance, includes optic fibre output beacon light source (1), colour separation piece (2), controllable attenuator of laser energy (3), time delay echo generator subassembly (4), attenuator (5), lighting device (6), division board (7) with the dividing line, detection camera (8), beam split piece (9), collimator (10) and corner reflector (12), its characterized in that:
the optical fiber end face of the optical fiber output beacon light source (1), the emergent optical fiber end face of the delay echo generator component (4) and the reticle (7) with the reticle are all placed at the focal plane of the collimator (10), the optical fiber output beacon light source (1) is started first, and the beacon light source is collimated and output through the collimator (10) after passing through the color separation film (2) and the light separation film (9), and the output light aims at the tested laser ranging system; the laser ranging system to be measured aims at an optical fiber output beacon light source (1) by utilizing a sighting device, laser of a laser emission module in the laser ranging system to be measured is started, the laser is converged on a reticle (7) with a reticle through a collimator (10), a lighting device (6) is started to illuminate a cross wire of the reticle (7) with the reticle, continuous energy adjustment is realized by utilizing an attenuation device (5) to control laser energy to be at proper intensity, the size of a laser spot on the reticle (7) with the reticle is observed through a detection camera (8), and the ratio of the size of the laser spot to the focal length of the collimator (10) is the laser divergence angle of the laser ranging system to be measured; the method comprises the steps that a time delay echo generator assembly (4) is used for collecting scattered laser pulse signals on a reticle (7) with a reticle, the time delay echo generated by the pulse signals is emitted through the end face of an emergent optical fiber of the time delay echo generator assembly (4), collimated output is carried out through a collimator (10), whether the receiving and transmitting axes are kept good or not is judged by whether a laser receiving module (11-3) of a tested laser ranging system (11) detects the signals, and meanwhile, continuous energy adjustment can be achieved through a laser energy controllable attenuation device (3) to control the size of output signals, so that the ranging capability of the tested laser ranging system to different distances is simulated;
the corner reflector (12) is arranged at the position of the laser ranging system to be measured to carry out self-detection on the measuring device;
the delay echo generator assembly (4) consists of a high-speed detector (4-1), a delay echo generator (4-2) and a controllable optical fiber output laser (4-3); the high-speed detector (4-1) adopts a corresponding wide wavelength range; the delay echo generator (4-2) can carry out beam shaping and delay pulse time, and control the optical fiber output laser (4-3) to be matched with the wavelength and pulse of the emitted laser of the tested laser ranging system (11).
2. The apparatus for rapidly measuring performance of a laser ranging system of claim 1, wherein: the optical fiber output beacon light source (1) adopts a 532nm laser, and the output power is 2.5mw.
3. The apparatus for rapidly measuring performance of a laser ranging system of claim 1, wherein: the color separation film (2) reflects 532nm and transmits laser of a laser ranging system to be measured; the light passing surface shape deviation RMS value lambda/10@632.8nm.
4. The apparatus for rapidly measuring performance of a laser ranging system of claim 1, wherein: the light splitting sheet (9) reflects the optical fiber output beacon light source (1), and reflects and transmits the laser of the tested laser ranging system, the light splitting ratio is between 4:6 and 6:4, and the surface shape deviation RMS value lambda/10@632.8nm of the light passing surface is achieved.
5. The apparatus for rapidly measuring performance of a laser ranging system of claim 1, wherein: the spectrum range of the illumination light source of the illumination device (6) needs to partially cover the detection wavelength of the detection camera (8).
6. The apparatus for rapidly measuring performance of a laser ranging system of claim 1, wherein: the rear intercept of the collimator (10) is larger than the outline dimension of the focal plane module with the beacon light.
7. A laser ranging system performance measurement method based on the device for rapidly measuring the performance of the laser ranging system according to claim 1, characterized in that the method comprises the following steps:
1) Firstly, a standard parallel light source is placed in front of a collimator (10), the wavelength of the parallel light source is the same as the wavelength of laser to be measured, then a reticle (7) with a reticle is fixed near the focal plane of the collimator (10), the size of an imaging light spot on the reticle (7) with the reticle is observed by a detection camera (8), the position of the reticle (7) with the reticle is adjusted to enable the light spot to be minimum, and the reticle (7) with the reticle is fixed;
2) Adding a beam splitter (9) in front of a reticle (7) with a reticle, dividing incident light into two beams, imaging a transmission channel on the reticle (7) with the reticle, fixing a light guiding optical fiber in a delay echo generator assembly (4) near the focus by a reflection channel, emitting laser light by using an output optical fiber of the delay echo generator assembly (4), setting a corner reflector (12) in front of a collimator (10) with the same laser wavelength as the wavelength of the laser to be measured, then adjusting the front and back positions of the light emitting optical fiber end surface of the delay echo generator assembly (4) until the corner reflector (12) is arranged at any position of the transmission collimator, and fixing the output optical fiber of the delay echo generator assembly (4) until a light spot at the reticle is motionless;
3) Adding a color separation film (2) in front of a delay echo generator component (4), placing an output optical fiber of an optical fiber output beacon light source (1) at a focus of a reflection channel, converging the optical fiber output beacon light source (1) at a focal plane of a standard collimator after passing through the color separation film (2), a light separation film (9) and the collimator (10), adjusting the position of the optical fiber end face of the optical fiber output beacon light source (1) to enable the imaging light spot of the standard collimator to be minimum, overlapping with a laser light spot emitted by the delay echo generator component (4), and finally fixing the optical fiber end face of the optical fiber output beacon light source (1);
4) The method comprises the steps of starting an optical fiber output beacon light source (1), roughly aligning a tested laser ranging system (11) after the beacon light is collimated by a collimator (10), adjusting the azimuth and the pitching angle of the beacon light by using a sighting device (11-1) of the tested laser ranging system (11), enabling the beacon light collimated by the optical fiber output beacon light source (1) by the collimator (10) to be imaged at the center of the sighting device (11-1) of the tested laser ranging system (11), and closing the beacon light;
5) Aligning an aiming device (11-1) of a laser ranging system (11) to be measured with a cross wire of the reticle (7) with the reticle by utilizing a reticle (7) illuminated by an illumination device (6), starting laser in the laser ranging system (11) to be measured, measuring the relative positions of a light spot and the cross wire of the reticle (7) with the reticle by utilizing a detection camera (8), and representing the position difference of the light spot and the cross wire, namely the deviation of the optical axes of the aiming device (11-1) and a laser emitting module (11-2) in the laser ranging system (11) to be measured;
6) After the reticle (7) with the reticle is irradiated by laser, part of scattered pulse light is detected by a high-speed detector (4-1), the signal is used as an initial pulse, a delay echo generator (4-2) is utilized to generate delay echo, then the laser is controlled to emit the same pulse light, the pulse light is emitted through an optical fiber of a controllable optical fiber output laser (4-3), the emitted light is detected by a laser receiving module (11-3) in a tested laser ranging system (11) after being collimated by a collimator, and whether the receiving and transmitting optical axes of the tested laser ranging system (11) are registered or not is judged by observing the receiving response of the laser receiving module (11-3);
7) The attenuation device (3) can be controlled by laser energy to simulate laser energy at different positions so as to observe the response capability of the tested laser ranging system (11).
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| CN109387849A (en) * | 2018-12-04 | 2019-02-26 | 珠海码硕科技有限公司 | A kind of coaxial laser range unit |
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