CN1584656A - High-precision dynamic and static measuring device for inter-satellite laser communication terminal - Google Patents
High-precision dynamic and static measuring device for inter-satellite laser communication terminal Download PDFInfo
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- CN1584656A CN1584656A CN 200410024986 CN200410024986A CN1584656A CN 1584656 A CN1584656 A CN 1584656A CN 200410024986 CN200410024986 CN 200410024986 CN 200410024986 A CN200410024986 A CN 200410024986A CN 1584656 A CN1584656 A CN 1584656A
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Abstract
The utility model provides an inter-satellite laser communication terminal high accuracy sound attitude measuring device, includes collimator, optical prism and drive transmission, and the leading features is that the apex angle of first optical prism and second optical prism equals, and its configuration relation is: when the main section of the first optical prism is a YOZ plane of a rectangular coordinate system, the thin end points to the negative direction of the Y axis and is driven by the first stepping motor to rotate around the X axis; the main section of the second optical prism is in an XOZ plane, the thin end points to the positive direction of the X axis, and the second stepping motor rotates around the Y axis. The invention can carry out micro-arc degree order precision measurement on the dynamic and static properties of the space laser communication terminal, and has the characteristics of high precision, simple structure, convenient processing and easy control.
Description
Technical field
The present invention relates to laser communication between star, laser communication terminal high precision dynamic and static weighing device between particularly a kind of star is mainly used to carry out the analogue measurement of laser communication terminal precision tracking performance between star.
Background technology
Between star in the laser communication, the angle of divergence of light beam is very little, usually in the microradian magnitude, transmission range is long again, the aligning of laser communication terminal between star, the technology of catching and following the tracks of become and become increasingly conspicuous, coarse light beam will cause receiving end signal to lose slump of disastrous proportions with the total system performance in a large number with the system that takes aim at, so tracking aiming is the gordian technique of whole satellite optical communication system design.Before carrying out test flight, an important link is exactly that the dynamic property of facing communication terminal on ground is carried out precision measurement.
Owing to the distance between two terminals of laser communication between star is very far away, in order to reduce the loss of energy in communication link, all make the angle of divergence of light beam little simultaneously, this just makes the clear aperture of communication terminal all bigger as far as possible.Therefore the checkout equipment that need design big clear aperture is checked the communication terminal in the optical communication between star.Formerly proposed in the technology (referring to patents such as Yun Maojin, application number: 200310108487.7, in October, 2003 applying date) to utilize two coaxial rotations of prism to realize the continuous bidimensional scanning of light beam in a specific circular cone.Its principle is seen Fig. 1, and main parts comprise: the 01-computing machine; The 02-PID controller; The 03-driving circuit; 04,05-motor; The 06-gear train; 07, the circular prism of 08-; The 09-database; 010,011-angular transducer.
Formerly technology has solved light beam than the scanning problem in the polarizers of big angle scope, but because the difficulty of the intrinsic Machine Design of self structure, its gear train has adopted the worm and gear rotation.Because the requirement of optical communication between star, the clear aperture of equipment is bigger, this just make this formerly technology generally be merely able to satisfy the angle calibration of milliradian order of magnitude precision, the difficulty that reach the microradian order of magnitude precision is very big, promptly allowing to reach also needs very big cost.
Summary of the invention
The problem to be solved in the present invention is to overcome the difficulty of above-mentioned technology formerly, laser communication terminal high precision dynamic and static weighing device between a kind of star is provided, it can carry out the precision measurement of microradian magnitude to the dynamic and static state performance of space optical communication terminal, have the precision height, simple in structure, processing is convenient, the characteristics that are easy to control.
Design philosophy of the present invention is as follows:
The present invention rotates the structure of biprism and sees Fig. 3, and the convenience in order to process, the drift angle of two prisms that uses identical.For the convenience of analyzing, at first should set up coordinate system, be the YOZ plane of coordinate system with the principal section of first prism, and its thin end point to negative direction of Y-axis; The principal section of second prism is in the XOZ plane, and thin end points to the positive dirction of X-axis.First prism rotates around X-axis, and second prism rotates around Y-axis, and regulation counterclockwise is the positive dirction of rotation, and the angle of rotation is respectively θ
1, θ
2And the unit vector of hypothesis incident beam is:
Wherein, is the angle between incident ray vector and the X-axis positive dirction (i.e. the rib direction of first prism), and θ is the component of incident ray vector in the principal section and the angle of Y-axis positive dirction.According to the vector refraction theorem, can derive incident beam and be through first prism with through the pass between the unit vector of emergent ray behind second prism and two the prism anglecs of rotation:
n
1 2＝n
2+(n
2-1)ctg
2； n
2 2＝n
2+(n
2-1)ctg
2′；???(6)
′＝cos
-1(sincosθ
11)；?????????????????????????????????(7)
θ
12＝tg
-1(ctg/sinθ
11)；????????????????????????????????(8)
θ
11＝θ-δ
1；????????????????????????????????????(10)
i
2＝θ
12+α-θ
2；????????????????????????????????(11)
f＝cos
-1(sincos(θ
12-δ
2))；????????????(12)
θ
f＝tg
-1(ctg′/sin(θ
12-δ
2))。(13)
Wherein,
,
Be respectively the ray vectors of incident beam behind first prism and second prism, δ
1Be the deflection angle of incident ray component in the first prism principal section, δ
2Be deflection angle from emergent ray component in the second prism principal section of first prism; n
1And n
2Be equivalent refractive index. ' is the angle between incident ray vector and the Y-axis positive dirction (i.e. the rib direction of second prism), θ
12Be the angle of incident ray vector component and Z axle positive dirction in the principal section,
fAnd θ
fThe angle of pitch (and angle of coordinate system z axle positive dirction) and position angle (angle between projection in the yoz plane and the x axle positive dirction) of the corresponding outgoing beam of difference.
The technical scheme that the present invention deals with problems is as follows:
Laser communication terminal high precision dynamic and static weighing device between a kind of star, comprise parallel light tube, optical prism and drive transmission, the formation that it is characterized in that described optical prism and drive transmission is: be provided with first data converter and second data converter in the computing machine, this computing machine drives the rotation of first optical prism by first driving circuit, first stepper motor, first rotating mechanism on the one hand successively; Drive the rotation of second optical prism by second driving circuit, second stepper motor, second rotating mechanism successively on the other hand, the item angle of described first optical prism and second optical prism equates, its configuration relation is: be the YOZ plane of rectangular coordinate system when the principal section of first optical prism, Bao Duan points to the negative direction of Y-axis, is rotated around X-axis by first step motor drive; The principal section of second optical prism is in the XOZ plane, and thin end points to the positive dirction of X-axis, is rotated around Y-axis by second stepper motor.
Described stepper motor and rotating mechanism are direct-coupled,
Described first optical prism and second optical prism are square, and the length of side is 500mm, and the vertex angle is 2 °.
Utilize that laser communication terminal high precision dynamic and static weighing device is characterized in that comprising the following steps: to the method for laser communication terminal static measurement between star between described star
Terminal to be measured is installed and adjusted to the first step, and the optical axis of parallel light tube optical axis and terminal to be measured is aimed at mutually, and the signal voltage of reading on the tracking terminal detector at this moment to be measured that misses the target is zero;
In second step, fixing terminal to be measured is motionless;
The 3rd step, control the rotation of first optical prism and second optical prism, make the receiving beam of terminal to be measured produce certain deflection, at this moment deviation has just taken place in the optical axis of incident light axis and terminal, reach miss distance (the Δ x of regulation, Δ y), write down the miss the target signal voltage (E of tracking detector simultaneously in level and vertical direction
xAnd E
y);
In the 4th step, go on foot response curve (the Δ x-E that the result who obtains draws out tracking detector according to the 3rd
x, Δ y-E
y), with the range of linearity of the response curve of determining tracking detector, and then can select the working range of tracking detector.
Utilize that laser communication terminal high precision dynamic and static weighing device is characterized in that comprising the following steps: to the method for laser communication terminal kinetic measurement between star between described star
1. with desired trace information, i.e. the azimuth angle theta of emergent ray
fWith angle of pitch
fThe input computing machine, calculated according to following formula by computing machine:
n
1 2＝n
2+(n
2-1)ctg
2； n
2 2＝n
2+(n
2-1)ctg
2′；????(6)
′＝cos
-1(sincosθ
11)；?????????????????????????????????(7)
θ
12＝tg
-1(ctg/sinθ
11)；????????????????????????????????(8)
θ
11＝θ-δ
1；??????????????????????????????????????????????(10)
i
2＝θ
12+α-θ
2；??????????????????????????????????????????(11)
f＝cos
-1(sin′cos(θ
12-δ
2))；????????????????????????(12)
θ
f＝tg
-1(ctg′/sin(θ
12-δ
2))。(13)
Try to achieve the angle θ that first optical prism need rotate
1The angle θ that need rotate with second optical prism
2
2. again according to the stepping angle α of stepper motor, calculate the step number n that first stepper motor need rotate
1=θ
1The step number n that/α and second stepper motor need rotate
2=θ
2/ α;
3. drive first, second stepper motor rotation n respectively by first, second driving circuit at last
1, n
2Step drives first optical prism and the rotation of second optical prism by rotating mechanism, produces desired track while scan;
4. after the tracking terminal detector of dut terminal detects incident optical signal, beginning that incident beam is carried out closed loop follows the tracks of, the optical axis of light beam and the optical axis of terminal are aimed at mutually, by the signal voltage that misses the target of computer recording tracking detector output, so just can detect the dynamic property of terminal.
As can be known after incident ray is determined, just can realize outgoing beam scanning within the specific limits according to above-mentioned result by rotating two prisms.
Characteristics of the present invention are:
Accuracy requirement to prism rotation is relatively low, and when prism rotates 1 jiao of timesharing, the deflection angle of light beam changes in the microradian magnitude, can satisfy the accuracy requirement of quiet, the dynamic property of laser communication terminal between star.Experimental results show that: after the step-length of stepper motor was determined, the drift angle of prism was more little, and the bearing accuracy that can realize is just high more.As being 1 jiao of branch when step-length, slewing area is ± 2 °, and drift angle is 2 when spending, and the prism corner causes that the maximum angle rate of change of beam deflection is 0.21 μ rad/arc min, and the average angle rate of change is 0.1 μ rad/arc min.Slewing area is ± 6 °, and drift angle is 6 when spending, and the prism corner causes that the maximum angle rate of change of beam deflection is 1.95 μ rad/arc min, and the average angle rate of change is 0.97 μ rad/arcmin.In actual applications, should be as requested, take all factors into consideration to determine the drift angle size of prism as each side such as angle variation range, measuring accuracy and production costs, select the stepper motor of suitable step-length and the rotating range of prism.
The present invention can carry out the precision measurement of microradian magnitude to the dynamic and static state performance of space optical communication terminal, have the precision height, simple in structure, processing is convenient, the characteristics that are easy to control.
Description of drawings:
Fig. 1 is the schematic diagram of the rotation double prism beam scanner of technology formerly.
Fig. 2 is two synoptic diagram that rotating prism is placed in the rotation double prism beam scanner of technology formerly.
Fig. 3 is two synoptic diagram that rotating prism is placed in the laser communication terminal high precision dynamic and static weighing device between star of the present invention.
Fig. 4 is the light channel structure synoptic diagram of laser communication terminal high precision sound attitude between apparatus of the present invention measurement star, among the figure: 1 parallel light tube; 2 two optical prisms and driving and gearing; Optical communication terminal between 3 stars to be detected, 4 is the tracking detector of terminal to be detected.
Fig. 5 is the graph of a relation between two prisms rotation angle and the beam deflection angle.
Fig. 6 is the digital control gear block diagram of two optical prisms of the present invention and driving and gearing, among the figure: 21-the first data converter; 22-the second data converter; 23-the first driving circuit; 24-the second driving circuit; 25-the first stepper motor; 26-the second stepper motor; 27-the first rotating mechanism; 28-the second rotating mechanism; 29-the first optical prism; 210-the second optical prism; 211-computing machine.
Fig. 7, Fig. 8, Fig. 9 are respectively physical construction synoptic diagram front elevation, right view and the vertical view of two optical prisms of the present invention and driving and gearing.
Embodiment:
The invention will be further described below in conjunction with the drawings and specific embodiments.
See also Fig. 3, Fig. 4 earlier, Fig. 3 is two synoptic diagram that rotating prism is placed in the laser communication terminal high precision dynamic and static weighing device between star of the present invention, Fig. 4 is the light path synoptic diagram of this transmitting apparatus to laser communication terminal high precision dynamic and static measurement between the star, by among the figure as can be known, laser communication terminal high precision dynamic and static measurement instrument mainly comprises between star of the present invention: parallel light tube 1; Two optical prisms and driving and gearing 2, and 3 are laser communication terminals between star to be detected, the 4th, the tracking detector of terminal to be detected.Employed optical prism is square, and the length of side is 500mm, and prism vertex angle is 2 °, and driving mechanism adopts stepper motor, therefore can adopt digital open loop control, and this has just reduced the difficulty of automatic control link.Fig. 6 is the digital control gear block diagram of two optical prisms of the present invention and driving and gearing.
(x y), can obtain the one the second two angle θ that prism need rotate according to equation (1)-(11) formula by computing machine 211 to require the coordinate of position to computing machine 211 input
1And θ
2, calculate the step number n that first stepper motor the 25, the 2 26 needs rotation again
1And n
2, driving corresponding stepper motor and rotate by first driving circuit 23, second driving circuit 24 then, the step number up to having rotated regulation turns to prism and requires the position.
Fig. 7, Fig. 8, Fig. 9 are respectively physical construction synoptic diagram front elevation, right view and the vertical view of two optical prisms of the present invention and driving and gearing.The present invention adopts direct-coupled structure between stepper motor and the prism rotation axis, has reduced the mechanical drive error greatly.For the structure that makes this device compact more, and guarantee to illuminate whole terminal through the outgoing beam of prism, should make parallel light tube and biprism as close as possible when mounted,, adjust the distance between terminal and the biprism according to the size of terminal to be measured and the size of slewing area.
Utilize the present invention can realize laser communication terminal high precision static test between star, the static test of terminal mainly be when terminal keeps motionless to the test tracking detector miss distance to the signal voltage response performance that misses the target.
Utilize that laser communication terminal high precision dynamic and static weighing device comprises the following steps: the method for laser communication terminal static measurement between star between star of the present invention
Terminal 3 to be measured is installed and adjusted to the first step, realizes that the optical axis of parallel light tube 1 optical axis and terminal to be measured 3 is aimed at mutually, and the signal voltage of reading on the tracking terminal detector 4 at this moment to be measured that misses the target is zero;
In second step, fixing terminal to be measured 3 is motionless;
The 3rd step, control first optical prism 29 and 210 rotations of second optical prism, make the receiving beam of terminal 3 to be measured produce certain deflection, at this moment deviation has just taken place in the optical axis of incident light axis and terminal 3, reach miss distance (the Δ x of regulation, Δ y), write down the miss the target signal voltage (E of tracking detector 4 simultaneously in level and vertical direction
xAnd E
y);
In the 4th step, go on foot response curve (the Δ x-E that the result who obtains draws out tracking detector 4 according to the 3rd
x, Δ y-E
y), with the range of linearity of the response curve of determining tracking detector 4, and then can select the working range of tracking detector 4.
The response curve of tracking detector 4 has reflected the relation between miss distance and tracking detector 4 output voltage signals.Can determine its range of linearity by the response curve of tracking detector, and then can select the working range of tracking detector, the further design that can be the tracker of terminal provides foundation.
Except can carrying out the static test, the present invention also can be used to the dynamic property of sense terminals, promptly will detect the residual deviation of terminal 3 to be measured under tracking mode, and this deviation signal can be represented by the residue miss distance of tracking detector 4.Parallel light tube 1 produces directional light, after the refraction of biprism system, by tracking detector 4 receptions of dut terminal 3.
Laser communication terminal high precision dynamic and static weighing device comprises the following steps: the method for laser communication terminal kinetic measurement between star between star of the present invention
1. with desired trace information, i.e. the azimuth angle theta of emergent ray
fWith angle of pitch
f Input computing machine 211 is calculated according to above-mentioned formula 1-12 formula by computing machine 211 then, tries to achieve the angle θ that first optical prism 29 needs rotation
1Angle θ with the 210 needs rotations of second optical prism
2
2. again according to the stepping angle α of stepper motor, calculate the step number n that first stepper motor 25 needs rotation
1=θ
1/ the α and second stepper motor 26 need the step number n of rotation
2=θ
2/ α;
3. drive first, second stepper motor 25,26 respectively by first driving circuit 23, second driving circuit 24 at last) rotation n
1, n
2Step drives first optical prism 29 and 210 rotations of second optical prism by first, second rotating mechanism 27,28, produces desired track while scan;
4. after the tracking terminal detector 4 of dut terminal 3 detects incident optical signal, beginning that incident beam is carried out closed loop follows the tracks of, the optical axis of light beam and the optical axis of terminal are aimed at mutually, by the signal voltage that misses the target of computing machine 211 record tracking detectors 4 outputs, so just can detect the dynamic property of terminal 3.
Utilize the present invention's different working method of setting terminal very easily, and can detect the dynamic property of terminal under the different mode.
Experiment showed, that the present invention is relatively low to the accuracy requirement of prism rotation, when prism rotates 1 jiao of timesharing, the deflection angle of light beam changes in the microradian magnitude, can satisfy the accuracy requirement of quiet, the dynamic property of laser communication terminal between star.The rate of change of prism corner when table 1 has been listed corresponding different prism vertex angle and rotating range,
Table 1
| Prism vertex angle (α) | ???????2° | ????????3° | ?????????4° | ???????5° | ???????6° |
| The prism corner causes the maximum angle rate of change of beam deflection | 0.21μrad/arc min | 0.47μrad/arc min | ?0.86μrad/arc ?min | ?1.21μrad/arc ?min | ?1.95μrad/arc ?min |
| The prism corner causes the average angle rate of change of beam deflection | 0.1μrad/arc min | 0.22μrad/arc min | ?0.43μrad/arc ?min | ?0.54μrad/arc ?min | ?0.97μrad/arc ?min |
| The prism angle range (± θ) | 2° | 3° | ?4° | ?5° | ?6° |
Fig. 5 has provided the relation between outgoing beam and the prism rotation.As can be seen from the table, after the step-length of stepper motor was determined, the drift angle of prism was more little, and the bearing accuracy that can realize is just high more.As being 1 jiao of branch when step-length, slewing area is ± 2 °, and drift angle is 2 when spending, and the prism corner causes that the maximum angle rate of change of beam deflection is 0.21 μ rad/arc min, and the average angle rate of change is 0.1 μ rad/arc min.Slewing area is ± 6 °, and drift angle is 6 when spending, and the prism corner causes that the maximum angle rate of change of beam deflection is 1.95 μ rad/arc min, and the average angle rate of change is 0.97 μ rad/arc min.In actual applications, can be as requested, take all factors into consideration to determine the drift angle size of prism as each side such as angle variation range, measuring accuracy and production costs, select the stepper motor of suitable step-length and the rotating range of prism.
The present invention can carry out the precision measurement of microradian magnitude to the sound state property of space optical communication terminal, compared with the prior art, have the precision height, simple in structure, processing is convenient, the characteristics that are easy to control.
Claims (5)
1, laser communication terminal high precision dynamic and static weighing device between a kind of star, comprise parallel light tube (1), optical prism and drive transmission (2), the formation that it is characterized in that described optical prism and drive transmission (2) is: be provided with first data-switching (21) and second data-switching (22) program in the computing machine (211), this computing machine (211) drives first optical prism (29) rotation by first driving circuit (23), first stepper motor (25), first rotating mechanism (27) on the one hand successively; Drive second optical prism (210) rotation by second driving circuit (24), second stepper motor (26), second rotating mechanism (28) successively on the other hand, the drift angle of described first optical prism (29) and second optical prism (210) equates, its configuration relation is: be the YOZ plane of rectangular coordinate system when the principal section of first optical prism (9), Bao Duan points to the negative direction of Y-axis, is driven by first stepper motor (27) and rotates around X-axis; The principal section of second optical prism (210) is in the XOZ plane, and thin end points to the positive dirction of X-axis, is rotated around Y-axis by second stepper motor (28).
2, laser communication terminal high precision dynamic and static weighing device between star according to claim 1 is characterized in that described first optical prism (29) and second optical prism (210) are square, and the length of side is 500mm, and the vertex angle is 2 °.
3, laser communication terminal high precision dynamic and static weighing device between star according to claim 1 is characterized in that described stepper motor and rotating mechanism are direct-coupled.
4, utilize that laser communication terminal high precision dynamic and static weighing device is characterized in that comprising the following steps: to the method for laser communication terminal static measurement between star between the described star of claim 1
Terminal to be measured (3) is installed and adjusted to the first step, and the optical axis of parallel light tube (1) optical axis and terminal to be measured (3) is aimed at mutually, and the signal voltage of reading on the tracking terminal detector at this moment to be measured (4) that misses the target is zero;
In second step, fixing terminal to be measured (3) is motionless;
The 3rd step, control the rotation of first optical prism (29) and second optical prism (210), make the receiving beam of terminal to be measured (3) produce certain deflection, at this moment deviation has just taken place in the optical axis of incident light axis and terminal (3), reach miss distance (the Δ x of regulation, Δ y), write down the miss the target signal voltage (E of tracking detector (4) simultaneously in level and vertical direction
xAnd E
y);
In the 4th step, the result who obtains according to the 3rd step draws out response curve (the Δ x-E of tracking detector (4)
x, Δ y-E
y), with the range of linearity of the response curve of determining tracking detector (4), and then can select the working range of tracking detector (4).
5, utilize that laser communication terminal high precision dynamic and static weighing device is characterized in that comprising the following steps: to the method for laser communication terminal kinetic measurement between star between the described star of claim 1
1. with desired trace information, i.e. the azimuth angle theta of emergent ray
fWith angle of pitch
fInput computing machine (211), calculated according to following formula by computing machine (211) then:
n
1 2＝n
2+(n
2-1)ctg
2； n
2 2＝n
2+(n
2-1)ctg
2′；???????????????????????(6)
′＝cos
-1(sincosθ
11)；????????????????????????????????????????????????????(7)
θ
12＝tg
-1(ctg/sinθ
11)；???????????????????????????????????????????????????(8)
θ
11＝θ-δ
1；?????????????????????????????????????????????????????(10)
i
2＝θ
12+α-θ
2；?????????????????????????????????????????????????(11)
f＝cos
-1(sin′cos(θ
12-δ
2))；???????????????????????????????(12)
θ
f＝tg
-1(ctg′/sin(θ
12-δ
2))。(13)
Try to achieve the angle θ that first optical prism (29) need rotate
1Angle θ with the rotation of second optical prism (210) needs
2
2. again according to the stepping angle α of stepper motor, calculate the step number n that first stepper motor (25) needs rotation
1=θ
1/ α and second stepper motor (26) need the step number n of rotation
2=θ
2/ α;
3. drive first, second stepper motor (25,26) rotation n respectively by first, second driving circuit (23,24) at last
1, n
2Step drives first optical prism (29) and second optical prism (210) rotation by rotating mechanism (27,28), produces desired track while scan;
4. after the tracking terminal detector (4) of dut terminal (3) detects incident optical signal, beginning that incident beam is carried out closed loop follows the tracks of, the optical axis of light beam and the optical axis of terminal are aimed at mutually, by the signal voltage that misses the target of computing machine (211) record tracking detector (4) output, so just can detect the dynamic property of terminal (3).
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|---|---|---|---|
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|---|---|---|---|
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| CN114279397A (en) * | 2021-12-28 | 2022-04-05 | 中国科学院光电技术研究所 | Device and method of moving target simulator based on rotating biprisms |
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2004
- 2004-06-08 CN CN 200410024986 patent/CN1256608C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340899C (en) * | 2005-06-08 | 2007-10-03 | 中国科学院上海光学精密机械研究所 | double-optical-wedge beam deflection mechanical device |
| CN105353781A (en) * | 2015-12-15 | 2016-02-24 | 中国科学院光电技术研究所 | Method for improving pointing precision of achromatic rotating prism group |
| CN105353781B (en) * | 2015-12-15 | 2018-06-12 | 中国科学院光电技术研究所 | A kind of method for improving achromatism rotating prism group pointing accuracy |
| CN106802672A (en) * | 2017-01-13 | 2017-06-06 | 中国科学院光电技术研究所 | A kind of real-time closed-loop tracking based on rotation biprism |
| CN106802672B (en) * | 2017-01-13 | 2019-11-05 | 中国科学院光电技术研究所 | A kind of real-time closed-loop tracking based on rotation biprism |
| CN111123507A (en) * | 2019-11-28 | 2020-05-08 | 武汉华中天经通视科技有限公司 | Synchronous scanning rotating double-prism device and one-dimensional scanning method thereof |
| CN111123507B (en) * | 2019-11-28 | 2022-02-08 | 武汉华中天经通视科技有限公司 | Synchronous scanning rotating double-prism device and one-dimensional scanning method thereof |
| CN114279397A (en) * | 2021-12-28 | 2022-04-05 | 中国科学院光电技术研究所 | Device and method of moving target simulator based on rotating biprisms |
| CN114114673A (en) * | 2021-12-31 | 2022-03-01 | 华中科技大学 | Laser point-to-point transmission system |
| CN114101900A (en) * | 2021-12-31 | 2022-03-01 | 华中科技大学 | Laser scanning optical system |
| CN114101900B (en) * | 2021-12-31 | 2023-03-10 | 华中科技大学 | Laser scanning optical system |
| CN116222304A (en) * | 2022-12-09 | 2023-06-06 | 上海航天控制技术研究所 | Optical axis control device and method for servo-free infrared position marker based on double optical wedges |
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