CN105911705B - A kind of device and method of the spot center extraction based on prism segmentation - Google Patents
A kind of device and method of the spot center extraction based on prism segmentation Download PDFInfo
- Publication number
- CN105911705B CN105911705B CN201610405794.9A CN201610405794A CN105911705B CN 105911705 B CN105911705 B CN 105911705B CN 201610405794 A CN201610405794 A CN 201610405794A CN 105911705 B CN105911705 B CN 105911705B
- Authority
- CN
- China
- Prior art keywords
- mrow
- light
- spot center
- unit
- spot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000605 extraction Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000011218 segmentation Effects 0.000 title claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 35
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 19
- 239000010703 silicon Substances 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 10
- 239000000523 sample Substances 0.000 claims abstract description 8
- 230000005622 photoelectricity Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 5
- 238000003709 image segmentation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J2001/4446—Type of detector
- G01J2001/446—Photodiode
Abstract
The invention discloses a kind of device and method of the spot center extraction based on prism segmentation.The device is split using beam splitter and roof prism to the light beam that optical system receives, light beam is divided into the mutually orthogonal two-beam in space by beam splitter, this two-beam is detected respectively by level detection unit and vertical sounding unit again, the light beam of incidence is separated on same straight line by the roof prism in probe unit, two-beam in opposite direction, every beam light is converged by condenser lens light intensity detection is carried out by silicon photoelectric diode again, the information of the light intensity of level detection unit and the vertical sounding unit detection gained road light of Gong tetra- carries out data processing by computer can draw the center of hot spot to be measured.The present invention carries out light spot image segmentation using optical element, and method is novel, simple and easy to do, while can realize the spot center extraction of degree of precision.
Description
Technical field：
The present invention relates to high-precision optical detection, and in particular to a kind of method of spot center extraction, swashs available for space
The extraction of beacon beam spot center in optic communication capture, tracking and sighting system.
Background technology：
The core technology of satellite laser communications is capture, tracking and point technique, and the pointing technology of differential of the arc measurement level is
Difficult point therein.High-precision pointing needs accurately to obtain the central information of pointing reference source, with this pointing reference source
Heart information instructs being accurately directed to for ICBM SHF satellite terminal light beam, and then realizes the foundation and maintenance of satellite laser communications link.But
Cause to be difficult to accurately to extract beacon spot center due to problems be present：
1. the essence tracing subsystem detector of capture, tracking and sighting system needs to meet certain visual field and higher simultaneously
Beacon hot spot center extraction precision, traditional detector extracts to the center of beacon hot spot, and it is non-to there is detector pixel
The problems such as uniformly, filling rate is low, quantum efficiency is low.
2. the essence tracing subsystem detector of capture, tracking and sighting system needs to meet higher detection frame frequency to realize
The disturbance rejection bandwidth of degree of precision, traditional detector need to carry out complicated circuit design for the higher detection frame frequency of realization
And data processing.
The content of the invention：
In order to solve problem present in background technology, present invention employs the method split based on prism, by beam splitter
Light beam where treating light-metering spot is split, and is divided into two-beam horizontally and vertically, respectively enters level detection
The composition of unit and vertical sounding unit, level detection unit and vertical sounding unit is identical with principle, but the placement side in space
Position is different, and the light beam of entrance is divided on same straight line by the roof prism in each probe unit, two beams in opposite direction
Light, then every Shu Guangyong condenser lenses are converged, its intensity signal is detected with silicon photoelectric diode, detects gained
Four road intensity signal input service computers carry out data processing, to draw the center of hot spot to be measured.
The present invention a kind of spot center extraction element and method based on prism segmentation, including：Beam splitter 1, level detection
Unit 2, vertical sounding unit 3, the composition and principle of working computer 4, wherein level detection unit 2 and vertical sounding unit 3
It is identical, mutually orthogonal placement in space, level detection unit 2 and vertical sounding unit 3 all include respectively a roof prism,
First condenser lens and the second condenser lens, the first silicon photoelectric diode and the second silicon photoelectric diode, whole spot center carry
Device is taken to be characterised by：
Spot center extraction element is placed on stabilized platform, and is rigidly connected with stabilized platform；Spot center to be measured
Light beam is divided into two-beam horizontally and vertically after beam splitter 1, light beam difference horizontally and vertically
Detected by level detection unit 2 and vertical sounding unit 3.Light beam enters in each probe unit, is first divided into by roof prism
Two-beam on same straight line, in opposite direction, then respectively by the first condenser lens and the second convergent lens to two-beam
Converged, then light intensity detection is carried out to the light after convergence by the first silicon photoelectric diode and the second silicon photoelectric diode.Finally
Four road intensity signal input service computers 4 of two probe unit detection gained are subjected to data processing to obtain hot spot to be measured
Center.
The extracting method of spot center, it is characterised in that comprise the following steps：
1. carry out light beam segmentation using optical element：Incident beam is divided into mutually orthogonal level side using beam splitter 1
To light beam and vertical direction light beam, respectively enter level detection unit 2 and vertical sounding unit 3 is detected, each probe unit
Light beam is divided on same straight line by interior roof prism, two-beam in opposite direction.
2. the data processing of spot center extraction element：In working computer 4, gained is detected by level detection unit
Energy X1, X2 and vertical sounding unit detection gained energy Y1, Y2, carry out data processing, obtain spot center coordinate (X,
), Y operational formula is：
Wherein K is proportionality coefficient, is provided by the calibration results.
The method have the advantages that：
1. hot spot is split using the ridge of roof prism：Incident light is divided into using roof prism optical characteristics and being in
Two-beam on same straight line, in opposite direction, the machining accuracy and rigidity of prism can reach higher level, in capture, tracking
With in sighting system in use, the anti-vibration antijamming capability of system can be improved.
2. carry out light intensity detection using silicon photoelectric diode：Silicon photoelectric diode photosurface is big, can export incident light in real time
Energy information, meet system to height detect frame frequency the needs of, it is possible to achieve the higher linearity of system and sensitivity.
3. light intensity detection is carried out using four independent silicon photoelectric diodes, it is convenient to carry out the one of different silicon photoelectric diodes
Cause property demarcation, so as to reach higher spot center extraction accuracy.
4. the system integration is higher, there is the advantages of high-performance, high reliability.
Brief description of the drawings：
Fig. 1 is the systematic schematic diagram of spot center extracting method.In figure：Beam splitter 1；Level detection unit 2；Vertical sounding
Unit 3；Working computer 4.
Fig. 2 is the schematic diagram of level detection unit or vertical sounding unit.In figure：Roof prism 5；First condenser lens 6；
Second condenser lens 7；First silicon photoelectric diode 8；Second silicon photoelectric diode 9.
Embodiment：
The embodiment of the present invention is further described below in conjunction with the accompanying drawings：
A kind of device of spot center extracting method of the present invention as shown in Figure 1, is divided incident light using beam splitter
Cutting, be divided into two-beam horizontally and vertically, two-beam is respectively enterd in level detection unit and vertical sounding unit,
The composition of each probe unit as shown in Figure 2, is divided into same into the light beam in each probe unit by roof prism
Straight line, two-beam in opposite direction, converged per Shu Guang using condenser lens, after reusing silicon photoelectric diode to convergence
Light carries out energy detection.Incident light simulates remote directional light from 670nm laser by parallel light tube, receives optics
System selects the telescope of 200mm bore 2m focal lengths.Beam splitter is 50 from THORLABS companies splitting ratio:Unpolarized point of 50
Beam cube BS031, its operation wavelength optimal wavelength is between 400nm to 700nm；Roof prism is from THORLABS companies
Knife edge right angle roof prism MRAK25-E02, its operation wavelength optimal wavelength is between 400nm to 750nm；Silicon photoelectric diode
The bulk silicon photodiode encapsulated from the SM1PD1B of THORLABS companies, plus earth, photosurface it is a diameter of
9mm.The incoming working computer of intensity signal of totally four road light enters line number obtained by level detection unit and the detection of vertical sounding unit
According to processing, so as to draw the center location information of hot spot to be measured.
Claims (2)
1. a kind of device of the spot center extraction based on prism segmentation, including：Beam splitter (1), level detection unit (2), hang down
Straight probe unit (3), working computer (4), it is characterised in that：
Described level detection unit (2) is identical with the structure of described vertical sounding unit (3), it include roof prism (5),
First condenser lens (6) and the second condenser lens (7), the first silicon photoelectric diode (8) and the second silicon photoelectric diode (9), are treated
The light beam of survey spot center is divided on same straight line by the roof prism (5), two-beam in opposite direction, then distinguishes
Two-beam is converged by first condenser lens (6) and second convergent lens (7), then by the first silicon photoelectricity
Diode (8) and second silicon photoelectric diode (9) carry out light intensity detection to the light after convergence；
Described spot center extraction element is placed on stabilized platform, and is rigidly connected with stabilized platform；Spot center to be measured
Light beam after described beam splitter (1), be divided into two-beam horizontally and vertically, horizontally and vertically
Light beam detected respectively by the level detection unit (2) and the vertical sounding unit (3)；It is finally that two detections are single
The working computer (4) that four road intensity signal inputs of member detection gained are described carries out data processing to obtain in hot spot to be measured
The heart.
A kind of 2. carrying based on a kind of spot center of the device of the spot center extraction based on prism segmentation described in claim 1
Take method, it is characterised in that method is as follows：
Light intensity X1, X2 and vertical sounding unit detection institute to the level detection unit detection gained of input service computer (4)
Light intensity Y1, Y2 obtained, data processing is carried out, obtains spot center coordinate (X, Y), the formula of data processing is：
<mrow>
<mi>X</mi>
<mo>=</mo>
<mi>K</mi>
<mfrac>
<mrow>
<mo>(</mo>
<mi>X</mi>
<mn>1</mn>
<mo>+</mo>
<mi>Y</mi>
<mn>1</mn>
<mo>)</mo>
<mo>-</mo>
<mo>(</mo>
<mi>X</mi>
<mn>2</mn>
<mo>+</mo>
<mi>Y</mi>
<mn>2</mn>
<mo>)</mo>
</mrow>
<mrow>
<mi>X</mi>
<mn>1</mn>
<mo>+</mo>
<mi>X</mi>
<mn>2</mn>
<mo>+</mo>
<mi>Y</mi>
<mn>1</mn>
<mo>+</mo>
<mi>Y</mi>
<mn>2</mn>
</mrow>
</mfrac>
</mrow>
<mrow>
<mi>Y</mi>
<mo>=</mo>
<mi>K</mi>
<mfrac>
<mrow>
<mo>(</mo>
<mi>X</mi>
<mn>1</mn>
<mo>+</mo>
<mi>X</mi>
<mn>2</mn>
<mo>)</mo>
<mo>-</mo>
<mo>(</mo>
<mi>Y</mi>
<mn>1</mn>
<mo>+</mo>
<mi>Y</mi>
<mn>2</mn>
<mo>)</mo>
</mrow>
<mrow>
<mi>X</mi>
<mn>1</mn>
<mo>+</mo>
<mi>X</mi>
<mn>2</mn>
<mo>+</mo>
<mi>Y</mi>
<mn>1</mn>
<mo>+</mo>
<mi>Y</mi>
<mn>2</mn>
</mrow>
</mfrac>
</mrow>
Wherein K is proportionality coefficient, is provided by the calibration results.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405794.9A CN105911705B (en) | 2016-06-12 | 2016-06-12 | A kind of device and method of the spot center extraction based on prism segmentation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405794.9A CN105911705B (en) | 2016-06-12 | 2016-06-12 | A kind of device and method of the spot center extraction based on prism segmentation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105911705A CN105911705A (en) | 2016-08-31 |
| CN105911705B true CN105911705B (en) | 2018-02-16 |
Family
ID=56750776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610405794.9A Active CN105911705B (en) | 2016-06-12 | 2016-06-12 | A kind of device and method of the spot center extraction based on prism segmentation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105911705B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009070340A1 (en) * | 2007-11-30 | 2009-06-04 | Raytheon Company | Space-time division multiple-access laser communications system |
| CN101645742A (en) * | 2009-09-04 | 2010-02-10 | 中国科学院上海技术物理研究所 | Tracking system of satellite-ground quantum communication link direction |
| CN102055537A (en) * | 2010-11-01 | 2011-05-11 | 长春理工大学 | Spot detection method for influences from strong atmospheric turbulance during static wireless laser communication |
| CN102255655A (en) * | 2011-06-15 | 2011-11-23 | 中国科学院上海技术物理研究所 | Link efficiency detection method realized by compatibly of tracking camera in laser communication |
| CN202059415U (en) * | 2011-03-23 | 2011-11-30 | 中国科学院上海技术物理研究所 | Space quantum communication array transform processor (ATP) precise tracking system with optical axis self calibration function |
| CN102324962A (en) * | 2011-05-31 | 2012-01-18 | 西安空间无线电技术研究所 | Method for capturing, tracking and processing satellite optical communication |
| US8160452B1 (en) * | 2008-01-07 | 2012-04-17 | Space Photonics, Inc. | Rapid acquisition, pointing and tracking optical system for free space optical communications |
| CN103326780A (en) * | 2013-06-21 | 2013-09-25 | 中国科学院空间科学与应用研究中心 | Free space optical-communication APT system and method based on compressive sensing receiver |
| CN104618015A (en) * | 2015-01-04 | 2015-05-13 | 西安应用光学研究所 | Small atmosphere laser communication device and method |
| CN205809438U (en) * | 2016-06-12 | 2016-12-14 | 中国科学院上海技术物理研究所 | The device that a kind of spot center based on prism segmentation is extracted |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9800332B2 (en) * | 2013-12-27 | 2017-10-24 | Space Photonics, Inc. | Acquisition, tracking, and pointing apparatus for free space optical communications with moving focal plane array |
-
2016
- 2016-06-12 CN CN201610405794.9A patent/CN105911705B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009070340A1 (en) * | 2007-11-30 | 2009-06-04 | Raytheon Company | Space-time division multiple-access laser communications system |
| US8160452B1 (en) * | 2008-01-07 | 2012-04-17 | Space Photonics, Inc. | Rapid acquisition, pointing and tracking optical system for free space optical communications |
| CN101645742A (en) * | 2009-09-04 | 2010-02-10 | 中国科学院上海技术物理研究所 | Tracking system of satellite-ground quantum communication link direction |
| CN102055537A (en) * | 2010-11-01 | 2011-05-11 | 长春理工大学 | Spot detection method for influences from strong atmospheric turbulance during static wireless laser communication |
| CN202059415U (en) * | 2011-03-23 | 2011-11-30 | 中国科学院上海技术物理研究所 | Space quantum communication array transform processor (ATP) precise tracking system with optical axis self calibration function |
| CN102324962A (en) * | 2011-05-31 | 2012-01-18 | 西安空间无线电技术研究所 | Method for capturing, tracking and processing satellite optical communication |
| CN102255655A (en) * | 2011-06-15 | 2011-11-23 | 中国科学院上海技术物理研究所 | Link efficiency detection method realized by compatibly of tracking camera in laser communication |
| CN103326780A (en) * | 2013-06-21 | 2013-09-25 | 中国科学院空间科学与应用研究中心 | Free space optical-communication APT system and method based on compressive sensing receiver |
| CN104618015A (en) * | 2015-01-04 | 2015-05-13 | 西安应用光学研究所 | Small atmosphere laser communication device and method |
| CN205809438U (en) * | 2016-06-12 | 2016-12-14 | 中国科学院上海技术物理研究所 | The device that a kind of spot center based on prism segmentation is extracted |
Non-Patent Citations (2)
| Title |
|---|
| 《Optimization of spatial acquisition systems for low-light-level robustness in space optical communication》;Shuai Bai, Jia Qiang, Liang Zhang, Jianyu Wang;《Optics Letters》;20150815;第40卷(第16期);第3750-3753页 * |
| 《星间光通信中的瞄准捕获和跟踪》;刘智, 卢益民, 罗萌;《计算机与数字工程》;20061231;第34卷(第5期);第71-74页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105911705A (en) | 2016-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11112503B2 (en) | Methods and apparatus for three-dimensional (3D) imaging | |
| CN109557522B (en) | Multi-beam laser scanner | |
| CN108152830A (en) | A kind of laser radar scanning imaging system and its measuring method | |
| CN203216702U (en) | Focal length measuring device for long focal length optical system | |
| CN102740012A (en) | A detector pixel signal readout circuit and an imaging method thereof | |
| AU2020290980B2 (en) | Airborne topo-bathy lidar system and methods thereof | |
| WO2019231496A1 (en) | Light detection system having multiple lens-receiver units | |
| KR102401040B1 (en) | Measurement systems and methods | |
| JP2018185307A (en) | Optical guidance system and method using mutually distinct signal-modifying sensors | |
| Beraldin et al. | Optimized position sensors for flying-spot active triangulation systems | |
| CN104359555A (en) | Portable hyperspectral reconstitution device based on digital micro reflector | |
| CN104567870A (en) | Single-pixel star sensor and target star sky detection method thereof | |
| CN207833020U (en) | A kind of laser radar scanning imaging system | |
| US9395296B1 (en) | Two-dimensional optical spot location using a one-dimensional detector array | |
| CN103091700A (en) | Satellite-borne pulsar X-ray spectrometer | |
| US11280885B2 (en) | LADAR receiver | |
| CN106405566A (en) | High-measurement-precision laser radar distance measurement method | |
| CN205809438U (en) | The device that a kind of spot center based on prism segmentation is extracted | |
| CN105911705B (en) | A kind of device and method of the spot center extraction based on prism segmentation | |
| US10444330B2 (en) | LADAR receiver with enhanced signal to noise ratio and method | |
| CN103852163A (en) | Miniature beam splitting system suitable for miniature imaging spectrometer | |
| CN102236232B (en) | Wave-surface differential interference space light demodulator | |
| FI130492B (en) | Dual line diode array device and measurement method and measurement device for particle velocity | |
| CN104154912B (en) | Implementation method of high-accuracy three-spectrum colorful star sensor | |
| CN106383352A (en) | Laser radar range finding method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |