CN207010678U - A kind of device for measuring pointing system interference and suppressing bandwidth - Google Patents
A kind of device for measuring pointing system interference and suppressing bandwidth Download PDFInfo
- Publication number
- CN207010678U CN207010678U CN201720838187.1U CN201720838187U CN207010678U CN 207010678 U CN207010678 U CN 207010678U CN 201720838187 U CN201720838187 U CN 201720838187U CN 207010678 U CN207010678 U CN 207010678U
- Authority
- CN
- China
- Prior art keywords
- pointing system
- interference
- beacon
- bandwidth
- laser
- 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
Landscapes
- Instruments For Measurement Of Length By Optical Means (AREA)
Abstract
This patent discloses a kind of device for measuring pointing system interference and suppressing bandwidth.The measurement apparatus includes parallel light tube, beacon light laser, piezoelectric ceramics fast mirror, piezoelectric ceramic actuator, signal generator and pointing system to be measured composition.Test philosophy be by signal generator be sequentially generated different amplitudes, different frequency signal, driving piezoelectric ceramics fast mirror produces corresponding beacon angular interference.Tested pointing system tracks the beacon beam after interference, measures under different frequency pointing system to the rejection ability of interference magnitude, and the disturbance rejection bandwidth of pointing system can be obtained through over-fitting.This patent can measure the disturbance rejection bandwidth of pointing system, and simple and easy.
Description
Technical field
This patent is related to the measurement of tracking control system index, and in particular to a kind of pointing system interference suppresses the survey of bandwidth
Amount, available for evaluation of the pointing system to Platform Vibration rejection ability in space optical communication.
Background technology：
Need to establish accurate optical link in space optical communication, optical link can be disturbed by different factors, mainly included
The micro-vibration of relative motion and platform itself between platform.The link establishment of space optical communication is using capture, tracking, aiming
System, abbreviation pointing system, pointing system typically use compound heavy metal framework, therefore can be to caused by platform relative motion
Low frequency, a wide range of disturbance are effectively suppressed.And the micro-vibration of platform itself has the characteristics of interfering frequency is high, be influence with
The main error source of system accuracy is taken aim at, therefore the disturbance rejection bandwidth of pointing system is the important parameter of the system.
The method of currently used measurement disturbance rejection bandwidth has theoretical emulation mode, according to system control bandwidth reckoning side
Method etc., it is indirect measurement, actual system mode can not be reflected.
The content of the invention：
In order to solve technical problem present in background technology, this patent proposes a kind of direct measurement pointing system interference suppression
The device of bandwidth processed, it is simple and easy.Disturbed by the beacon angular for producing different frequency, the tracking for measuring pointing system is residual
Difference, it is fitted to obtain the AF panel amplitude curve of pointing system by data.
As shown in Figure 1, including parallel light tube 1, beacon light laser 2, piezoelectric ceramics are quick for the test device of this patent
Speculum 3, piezoelectric ceramic actuator 4, signal generator 5, tested pointing system 6.It is characterized in that：
The beacon light laser 2 is optical fiber laser, and fiber end face is located at the focal plane of parallel light tube 1；The beacon
The laser that light laser 2 is sent enters parallel light tube 1 after piezoelectric ceramics fast mirror 3, is produced by parallel light tube 1 parallel
Light beam, into tested pointing system 6；The signal generator 5 produces input signal to piezoelectric ceramic actuator 4, drives piezoelectricity
Ceramic fast mirror 3 carries out yaw motion.
It is as follows to measure the step of pointing system interference suppresses bandwidth：
1. producing the sinusoidal signal that frequency is X using signal generator 5, input to piezoelectric ceramic actuator 4 and drive piezoelectricity
It is X that ceramic fast mirror 3, which produces frequency, and amplitude is θ swing.The fiber end face of beacon light laser 2 is apart from piezoelectric ceramics
The distance of the minute surface of fast mirror 3 is L, and the focal plane of parallel light tube is f, then it is X that can produce frequency, and amplitude is 2L θ/f beacon
Angular is disturbed；
2. beacon beam caused by the tracking step 1 of pointing system 6 to be measured, system tracking residual error now is also sinusoidal signal,
Angular amplitude corresponding to residual error is θ '.Then show when frequency is X, pointing system is D=θ ' f/ (2L to the rejection ability of interference
θ)；
3. increasing the interfering frequency X in step 1 successively since low frequency, it is right to measure pointing system 6 to be measured under different frequency
The rejection ability D (X) of interference, carries out the fitting of data, as D (X0During)=0, X0The AF panel band of pointing system 6 as to be measured
It is wide.
This patent has the advantages that：
1. producing interference signal using piezoelectric ceramics fast mirror, the frequency range of covering is big, and measurement accuracy is high；
2. can not only measure to obtain the disturbance rejection bandwidth of pointing system, from low to high complete can also be obtained
AF panel curve, the test to system are more abundant.
Brief description of the drawings：
Fig. 1 is test system schematic diagram.1. parallel light tube in figure, 2. beacon light lasers, 3. piezoelectric ceramics quick reflexes
Mirror, 4. piezoelectric ceramic actuators, 5. signal generators, 6. tested pointing systems.
Fig. 2 is suppression curve of the pointing system to interference.
Embodiment：
Specific implementation of the patent mode is described in further detail below in conjunction with the accompanying drawings.
Test device is formed and connected as shown in Figure 1, and the parameter respectively formed is described as：
1) parallel light tube 1：Focal length f=4m, bore 0.3m；
2) beacon light laser 2：Wavelength 671nm, transmission power are adjustable；
3) piezoelectric ceramics fast mirror 3：Using PI S330 series of products, maximum bias angle 10mrad；Minute surface away from
From being L=0.1m with a distance from the fiber end face of beacon light laser 2；
4) piezoelectric ceramic actuator 4：Using the piezoelectric actuator of Harbin company's core tomorrow, closed-loop control is supported；
5) signal generator 5：Using Tyke AFG3021C models, sample rate 250M/s；
Before tested pointing system 6 is placed on test device, specific testing procedure is：
1) it is 2Hz that signal generator 5 produces frequency first, and amplitude is 5V sine wave.Sinewave output is to piezoelectric ceramics
Driver 4, driving piezoelectric ceramics fast mirror 3 carry out periodic deflection, and deflection amplitude θ is 5mrad；
2) resultant interference frequency of the beacon beam after parallel light tube 1 is 2Hz, and the amplitude for disturbing angle is
3) pointing system 6 being tested to be tracked beacon beam, record tracking residual error is 6.1 μ rad, therefore at 2Hz, with
It is D (2Hz)=6.1 μ rad/0.5mrad=0.012 to the rejection ability of interference to take aim at system；
4) frequency for increasing interference successively is 5Hz, 10Hz, 20Hz, 50Hz, 100Hz, 120Hz, 150Hz, 200Hz, and root
The angular amplitude of interference is suitably reduced according to the frequency of interference, measurement obtains the rejection ability that pointing system is disturbed different frequency
For：
D (5Hz)=0.031, D (10Hz)=0.071, D (20Hz)=0.132, D (50Hz)=0.389, D (100Hz)=
0.805, D (120Hz)=1.08, D (150Hz)=1.38, D (200Hz)=1.52.
Mapped to measuring obtained data above, obtain pointing system and interference rejection capability is closed with the curve of frequency
System, using logarithmic coordinates, as shown in Figure 2.As can see from Figure 2 pointing system to the rejection ability of interference is 0dB when
Corresponding frequency is 115Hz or so.
Claims (1)
1. a kind of device for measuring pointing system interference and suppressing bandwidth, including parallel light tube (1), beacon light laser (2), piezoelectricity
Ceramic fast mirror (3), piezoelectric ceramic actuator (4), signal generator (5), tested pointing system (6), it is characterised in that：
The beacon light laser (2) is optical fiber laser, and fiber end face is located at the focal plane of parallel light tube (1)；
The laser that the beacon light laser (2) sends enters parallel light tube (1) after piezoelectric ceramics fast mirror (3),
Collimated light beam is produced by parallel light tube (1), into tested pointing system (6)；
The signal generator (5) produces input signal and gives piezoelectric ceramic actuator (4), drives piezoelectric ceramics fast mirror
(3) yaw motion is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720838187.1U CN207010678U (en) | 2017-07-12 | 2017-07-12 | A kind of device for measuring pointing system interference and suppressing bandwidth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720838187.1U CN207010678U (en) | 2017-07-12 | 2017-07-12 | A kind of device for measuring pointing system interference and suppressing bandwidth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207010678U true CN207010678U (en) | 2018-02-13 |
Family
ID=61452901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720838187.1U Active CN207010678U (en) | 2017-07-12 | 2017-07-12 | A kind of device for measuring pointing system interference and suppressing bandwidth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207010678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204801A (en) * | 2017-07-12 | 2017-09-26 | 中国科学院上海技术物理研究所 | It is a kind of to measure the device and method that pointing system interference suppresses bandwidth |
-
2017
- 2017-07-12 CN CN201720838187.1U patent/CN207010678U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204801A (en) * | 2017-07-12 | 2017-09-26 | 中国科学院上海技术物理研究所 | It is a kind of to measure the device and method that pointing system interference suppresses bandwidth |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10473889B2 (en) | Experimental system for laser beam measurement and steering control | |
| CN112636827B (en) | On-line calibration device and method for receiving coaxiality of space optical communication terminal | |
| CN109520425B (en) | Precise tracking error testing device and testing method | |
| CN106209221B (en) | A kind of measuring device and measuring method of facula mass center extraction accuracy | |
| CN105301578A (en) | Laser reception debugging method and apparatus | |
| CN104266743A (en) | Wavelength modulation optical fiber acoustic sensor | |
| CN105446051A (en) | Laser acousto-optical scanning method and device thereof | |
| CN109332879A (en) | Based on the online galvanometer positioning accuracy correction system of processing of Michelson interference and method | |
| CN110631511B (en) | Right-angle prism type angle sensing measurement device and method based on multi-longitudinal-mode self-mixing effect | |
| Shao et al. | Dynamic clearance measurement using fiber-optic frequency-swept and frequency-fixed interferometry | |
| CN207010678U (en) | A kind of device for measuring pointing system interference and suppressing bandwidth | |
| CN102707732B (en) | Fine-tracking control system for optical communication | |
| CN201889585U (en) | Focus indicating device in laser welding equipment | |
| CN105758342A (en) | Simple gun barrel inner cavity linearity detection device | |
| CN210005211U (en) | high-speed wind tunnel schlieren instrument focal spot monitoring and damping system | |
| CN107204801A (en) | It is a kind of to measure the device and method that pointing system interference suppresses bandwidth | |
| CN105758255A (en) | Equipment for inspecting bore straightness of gun barrel | |
| CN100517155C (en) | Combined feedback-controlled vibration compensation system based on accelerometer | |
| CN102494665B (en) | Method for measuring torsion angle of altazimuth equipment on basis of laser communication | |
| CN206149275U (en) | Measurement device for with taking aim at system to beacon facula displacement sensitivity | |
| CN206557059U (en) | A kind of double light path apparatus for measuring dust concentration | |
| CN106374998B (en) | The measuring device and method of a kind of pointing system to beacon hot spot displacement sensitivity | |
| CN115173920A (en) | Semi-physical simulation device and method for dynamic capture tracking test of laser load | |
| CN205539857U (en) | Laser reputation scanning device | |
| CN201514204U (en) | Dual optical-axis (laser and visible light) sight deflection test device in outfield environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |