CN110455498A - A kind of composite shaft pointing system performance testing device and test method - Google Patents
A kind of composite shaft pointing system performance testing device and test method Download PDFInfo
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- CN110455498A CN110455498A CN201910599569.7A CN201910599569A CN110455498A CN 110455498 A CN110455498 A CN 110455498A CN 201910599569 A CN201910599569 A CN 201910599569A CN 110455498 A CN110455498 A CN 110455498A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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Abstract
The invention discloses a kind of composite shaft pointing system performance testing device and test methods, comprising: pedestal；Indicate light source；Detector；Rotating arm, rotating arm are rotatably disposed on pedestal；It is fixedly installed on the fast mirror of rotating arm one end, fast mirror is used to indicate that the instruction light that light source issues to reflex to composite shaft pointing system, and the pointing light that composite shaft pointing system issues is reflexed to detector；The driver being set on the fast mirror；Controller, controller are connected with rotating arm, driver, and the rotation for controlling rotating arm, and control driver driving fast mirror is vibrated, and compound axis tracking technical field is related to.The present invention can measure four key indexes of pointing system simultaneously under interior field condition, test process is simple and convenient, does not need that a large amount of human and material resources is spent to carry out field testing, shortens tracking, aiming performance testing time, testing cost is saved, ensure that measuring accuracy.
Description
Technical field
The present invention relates to compound axis tracking technical fields, are specifically related to a kind of composite shaft pointing system performance testing device
And test method.
Background technique
Composite shaft pointing system is using thick, smart two-stage tracking mode, and wherein rough tracking is complete by 360 ° of dimensional turntable realization
Orientation zone acquisition and tracking target；Essence tracking inhibits rough tracking residual error using high broadband anti-mirror fastly, realize high-precision target with
Track.The tracking of composite shaft pointing system, pointing accuracy reach μ rad (microradian) grade, and tracking accuracy is very high, need to be equipped with corresponding height
Precision tracking aiming performance testing device.
Currently, domestic have special internal field, foreign oxide, but generally existing test for tracking aiming performance test
Precision is not high, test index covers incomplete problem, wherein internal field test generallys use common photoelectricity and turns target, and there are following
Problem: 1, common photoelectricity turns target mainly for detection of theodolite tracking performance, can only test tracking accuracy, not have pointing accuracy
Test function；2, pointing system turns the luminous point imaging tracking on target to common photoelectricity, but the luminous point on image is with the rotation for turning target
Image rotation is generated, if light spot form is irregular, certain influence can be generated on image trace.And it is surveyed for the outfield of tracking aiming performance
Examination, it is general to be realized by the way of carrying target platform and carrying array target spot instrument, but the flying speed of carrying platform is generally on the left side 20m/s
The right side, speed is slower, is unable to test pointing system and protects precision tracking maximum angular rate, protects precision tracking maximum angular acceleration.
Summary of the invention
The purpose of the invention is to overcome the shortcomings of above-mentioned background technique, provide one kind can be completed under the environment of internal field
Composite shaft pointing system multiple performance test, it is easy to use, the high composite shaft pointing system performance testing device of measuring accuracy and
Test method.
The present invention provides a kind of composite shaft pointing system performance testing device, comprising:
Pedestal；
Indicate light source；
Detector；
Rotating arm, the rotating arm are rotatably disposed on the pedestal；
It is fixedly installed on the fast mirror of described rotating arm one end, the fast mirror is used for the instruction light source
The instruction light of sending reflexes to composite shaft pointing system, and the pointing light that composite shaft pointing system issues is reflexed to the detection
Device；
The driver being set on the fast mirror；
Controller, the controller are connected with the rotating arm, driver, and the rotation for controlling rotating arm, with
And control driver driving fast mirror is vibrated.
Based on the above technical solution, the test device further includes spectroscope, and the spectroscope is set to described
It indicates in the optical path between light source and fast mirror, spectroscope has transmission plane and reflecting surface, and the transmission plane will be for that will refer to
Show light source issue part indicate light transmission to the detector formed instruction luminous point, and by composite shaft pointing system issue with
It takes aim at light transmission to detector and forms integral hot spot, the reflecting surface is used to indicate that the part instruction light that light source issues to reflex to institute
State fast mirror.
Based on the above technical solution, the test device further includes the unit that is coupled and aligned, the list that is coupled and aligned
Member is set in the optical path between the instruction light source and the spectroscope, and the unit that is coupled and aligned is used to adjust the light of instruction light
Road, to adjust the position of instruction luminous point on the detector.
Based on the above technical solution, the test device further includes guide-lighting baffle and pyramid, and the pyramid is used for
The instruction light transmitted by the spectroscope is reflexed into detector through spectroscope, the leaded light baffle is connected with controller, leads
Light trap piece includes
Open state, when in the open state, the instruction illumination of the spectroscope transmission is incident upon pyramid；
Closed state, when in the closed position, the instruction light of the spectroscope transmission are blocked by guide-lighting baffle.
Based on the above technical solution, guide lighting channel is offered in the pedestal, the guide lighting channel is located at described
In optical path between spectroscope and fast mirror, the concentric rotation axis of the guide lighting channel and the rotating arm is arranged, described
The first reflecting mirror is fixedly installed on rotating arm, first reflecting mirror is used to reflex to the instruction light in guide lighting channel described
Fast mirror.
Based on the above technical solution, the light inlet being connected to the guide lighting channel, institute are offered on the pedestal
Light inlet is stated in the optical path between the spectroscope and guide lighting channel, the guide lighting channel in pedestal is set with light inlet connectivity part
It is equipped with the second reflecting mirror, second reflecting mirror is used to the instruction light at light inlet reflexing to first reflecting mirror.
The present invention also provides a kind of composite shaft pointing system performance testing methods, include the following steps:
Test device as described in claim 1 is provided；
The position for adjusting composite shaft pointing system and test device makes the rotary middle point of composite shaft pointing system, and fast
Optical path between fast reflecting mirror and composite shaft pointing system is overlapped with the intersection point of the rotary shaft of rotating arm；
Indicate that light source issues instruction light, composite shaft pointing system tracks the instruction light；
According to testing requirement, controls fast mirror and remain stationary or vibrated according to predeterminated frequency；
Control rotating arm rotate and is ramped up, and when its angular speed or angular acceleration reach preset value, is stopped accelerating, be revolved
Pivoted arm remains a constant speed rotation；
Composite shaft pointing system issues pointing light, and forms integral hot spot on the detector；
The integral hot spot is handled to obtain n group test data, aiming is calculated according to the n group test data and is missed
Difference and tracking error.
Based on the above technical solution, the test device further includes the unit that is coupled and aligned, the list that is coupled and aligned
Member is for adjusting the optical path of instruction light, and to adjust the position of instruction luminous point on the detector, composite shaft pointing system issues pointing
It is further comprising the steps of before light:
It indicates that light source issues instruction light, adjusts the unit that is coupled and aligned, make the instruction luminous point for indicating that light is formed on the detector
Positioned at picture centre.
Based on the above technical solution, the collimating fault is calculated according to following formula:
Δθp,x=arctan (xc-x0)
Δθp,y=arctan (yc-y0)
In formula, Δ θp,xFor the x-component of collimating fault, Δ θp,yFor the y-component of collimating fault, xcFor integral facula mass center
X is to component, ycTo integrate the y of facula mass center to component, x0For the x-component of detector center, y0For detector center
Y-component, Δ θpFor collimating fault；
The x of facula mass center is integrated to component xc, the y of facula mass center is integrated to component ycIt is calculated according to following formula:
In formula, P is the pointing light general power on detector, and m is the line number of detector cells, and n is the column of detector cells
Number, M are total line number of detector cells, and N is total columns of detector cells, xmnFor the x for the detector cells that m row n-th arranges
To coordinate, ymnThe y of the detector cells arranged for m row n-th is to coordinate.
Based on the above technical solution, the tracking error is calculated according to following formula:
In formula, Δ θT,xFor the x-component of tracking error, Δ θT,yFor the y-component of tracking error, Δ θj,x、Δθj,yFor jth group
Short exposure facula mass center is relative to x, y of long-term exposure spot mass center angu-lar deviation to component, Δ θ in dataTFor tracking error.
Compared with prior art, advantages of the present invention is as follows:
(1) composite shaft pointing system performance testing device of the invention using be arranged on the base rotatable rotating arm come
Field testing environment is simulated, biggish angular speed and angular acceleration can be easily reached, thus can be simultaneously under interior field condition
Measure pointing system guarantor's precision tracking maximum angular rate, protect precision tracking maximum angular acceleration, tracking accuracy, pointing accuracy this
Four key indexes, test process is simple and convenient, does not need to spend a large amount of human and material resources to carry out field testing, shorten with
Track, aiming performance testing time, save testing cost；Rotating arm is arranged on the base, will not draw rotation bring shake
Enter into test result, ensure that measuring accuracy.
(2) composite shaft pointing system performance testing method of the invention during the test, pointing system tracking instruction
The centroid position of luminous point is exactly aiming point, convenient for accurate test collimating fault；By the small magnitude of fast mirror, high-frequency
Move simulation tracing circuit high-frequency vibration environment, can simulate high-speed target movement, also can simulation tracing circuit high frequency vibrating
Rotating ring border can simulate realistically the target following characteristic in actual tracking circuit, be greatly improved tracking accuracy, pointing accuracy
Measuring accuracy.
Detailed description of the invention
Fig. 1 is the composite shaft pointing system performance testing apparatus structure schematic diagram of the embodiment of the present invention.
Appended drawing reference: 1-pedestal, 2-instruction light sources, 3-detectors, 4-rotating arms, 5-fast mirrors, 6-is multiple
Sympodium pointing system, 7-spectroscopes, 8-are coupled and aligned unit, 9-guide-lighting baffles, 10-pyramids, the 11-the first reflecting mirror,
12-the second reflecting mirror.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
Shown in Figure 1, the embodiment of the present invention provides a kind of composite shaft pointing system performance testing device, comprising: pedestal
1, light source 2, detector 3, rotating arm 4, fast mirror 5, driver, controller are indicated.
Rotating arm 4 is rotatably disposed on pedestal 1；Fast mirror 5 is fixedly installed on 4 one end of rotating arm, quick reflex
Mirror 5 is used to the instruction light for indicating that light source 2 issues reflexing to composite shaft pointing system 6, and composite shaft pointing system 6 is issued
Pointing light reflexes to detector 3；Driver is set on fast mirror 5；Controller is connected with rotating arm 4, driver, and
For controlling the rotation of rotating arm 4, and control driver driving fast mirror 5 is vibrated.
Composite shaft pointing system performance testing device of the invention using be arranged on pedestal 1 rotatable rotating arm 4 come
Field testing environment is simulated, biggish angular speed and angular acceleration can be easily reached, thus can be simultaneously under interior field condition
Measure pointing system guarantor's precision tracking maximum angular rate, protect precision tracking maximum angular acceleration, tracking accuracy, pointing accuracy this
Four key indexes, test process is simple and convenient, does not need to spend a large amount of human and material resources to carry out field testing, shorten with
Track, aiming performance testing time, save testing cost；Rotating arm 4 is arranged on pedestal 1, will not be by rotation bring shake
It is introduced into test result, ensure that measuring accuracy.
Controller can control fast mirror 5 according to the data of high-frequency vibration environment, thus simulation tracing circuit
High frequency vibration characteristic and be injected into composite shaft pointing system 6, detection composite shaft pointing system 1 is to the inhibition energy of high-frequency vibration
Power；The movement of fast mirror 5 uses servo closed-loop fashion, using the data of high-frequency vibration environment as input, by quickly anti-
Sensor (such as strain gauge transducer) feedback on mirror 5 is penetrated, control fast mirror 5 moves.
In the present embodiment, it is preferred that the test device further includes spectroscope 7, and the spectroscope 7 is set to the finger
Show in the optical path between light source 2 and fast mirror 5, spectroscope 7 has transmission plane and reflecting surface, and the transmission plane will be for that will refer to
Show that the part that light source 2 issues indicates that light transmission to the detector 3 forms instruction luminous point, and composite shaft pointing system 6 is issued
Pointing light transmission to detector 3 form integral hot spot, the reflecting surface is used to indicate that the part that light source 2 issues to indicate that light is anti-
It is incident upon the fast mirror 5；Light beam can be divided into multi-beam by spectroscope 7, and the instruction light part that instruction light source 2 issues is divided
For two beams, wherein a branch of detector 3 that is transmitted through forms instruction luminous point, another beam reflexes to fast mirror 5；And composite shaft pointing
The pointing light transmission that system 6 issues to detector 3 forms integral hot spot.
In the present embodiment, it is preferred that the test device further includes the unit 8 that is coupled and aligned, the unit 8 that is coupled and aligned
It is set in the optical path between the instruction light source 2 and the spectroscope 7, the unit 8 that is coupled and aligned is used to adjust the light of instruction light
Road, to adjust position of the instruction luminous point on detector 3；Indicate light focal imaging on detector 3, be coupled and aligned 8 edge of unit
Optical path is hung down axis direction two dimensional motion, can make to indicate that luminous point at image center, realizes that transmitting optical path and receiving light path are total to optical path,
Guarantee the measuring accuracy of tracking accuracy, pointing accuracy.
In the present embodiment, it is preferred that the test device further includes guide-lighting baffle 9 and pyramid 10, and the pyramid 10 is used
In the instruction light transmitted by the spectroscope 7 is reflexed to detector 3 through spectroscope 7, the leaded light baffle 9 and controller phase
Even, guide-lighting baffle 9 includes
Open state, when in the open state, the instruction illumination that the spectroscope 7 transmits is incident upon pyramid 10；
Closed state, when in the closed position, the instruction light that the spectroscope 7 transmits are blocked by guide-lighting baffle 9.
Guide-lighting baffle 9, pyramid 10 and the cooperation of unit 8 that is coupled and aligned, are detecting for adjusting instruction light before the test begins
Imaging position on device 3, so that the heart, realization transmitting optical path and receiving light path are total to optical path, guarantee instruction luminous point mass center in the picture
The measuring accuracy of tracking accuracy, pointing accuracy, convenient for the calculating of subsequent detection result.And it is no longer needed during official testing altogether
Optical path adjusting.
In the present embodiment, it is preferred that guide lighting channel is offered in the pedestal 1, the guide lighting channel is located at described point
In optical path between light microscopic 7 and fast mirror 5, the concentric rotation axis of the guide lighting channel and the rotating arm 4 is arranged, described
The first reflecting mirror 11 is fixedly installed on rotating arm 4, first reflecting mirror 11 is used to reflect the instruction light in guide lighting channel
To the fast mirror 5；Further, the light inlet being connected to the guide lighting channel is offered on 1 side wall of pedestal, it is described
In optical path between the spectroscope 7 and guide lighting channel, the guide lighting channel in pedestal 1 is set light inlet with light inlet connectivity part
It is equipped with the second reflecting mirror 12, second reflecting mirror 12 is used to the instruction light at light inlet reflexing to first reflecting mirror
11；Guide lighting channel, light inlet, the first reflecting mirror 11 and the second reflecting mirror 12 cooperation for by by spectroscope 7 reflect Lai instruction
Light reflexes to fast mirror 5, and ensures no matter how rotating arm 4 rotates all unlikely its optical path of influence.
The embodiment of the present invention also provides a kind of composite shaft pointing system performance testing method, includes the following steps:
Test device as described in claim 1 is provided；
The position for adjusting composite shaft pointing system 6 and test device, makes the rotary middle point of composite shaft pointing system 6, and
Optical path between fast mirror 5 and composite shaft pointing system 6 is overlapped with the intersection point of the rotary shaft of rotating arm 4；
Indicate that light source 2 issues instruction light, composite shaft pointing system 6 tracks the instruction light；
According to testing requirement, controls fast mirror 5 and remain stationary or vibrated according to predeterminated frequency；
Control rotating arm 4 starts to rotate and ramp up, when its angular speed or angular acceleration reach preset value, stop plus
Speed, rotating arm 4 remain a constant speed rotation；
Composite shaft pointing system 6 issues pointing light, and integral hot spot is formed on detector 3；
The integral hot spot is handled to obtain n group test data, aiming is calculated according to the n group test data and is missed
Difference and tracking error.
Composite shaft pointing system performance testing method of the invention during the test, pointing system tracking instruction luminous point
Centroid position be exactly aiming point, convenient for accurate test collimating fault；Pass through the small magnitude of fast mirror 5, high-frequency fortune
Dynamic model intend tracking loop high-frequency vibration environment, can simulate high-speed target movement, also can simulation tracing circuit high-frequency vibration
Environment can simulate realistically the target following characteristic in actual tracking circuit, be greatly improved the survey of tracking accuracy, pointing accuracy
Try precision.
In the present embodiment, it is preferred that the test device further includes the unit 8 that is coupled and aligned, the unit 8 that is coupled and aligned
For adjusting the optical path of instruction light, to adjust position of the instruction luminous point on detector 3, composite shaft pointing system 6 issues pointing
It is further comprising the steps of before light:
It indicates that light source 2 issues instruction light, adjusts the unit 8 that is coupled and aligned, make the instruction light for indicating that light is formed on detector 3
Point is located at picture centre.
Test tracking aiming performance, it is desirable that 6 system attitude of composite shaft pointing system, pitching rotary shaft joint are filled in test
It sets emergent light to rotate around rotary shaft near the scanning light cone point to be formed, the tracking instruction light of composite shaft pointing system 6 is revolved by control
The examination of 4 rotation speed of pivoted arm protects precision maximum angular rate, protects precision maximum angular acceleration；After tenacious tracking indicates light, composite shaft
Pointing system 6 emits low power optical beam, and real time imagery forms integral hot spot on the detector 3 of test device, is adopted by image
Collection processing obtains tracking error and collimating fault.Also it can change tracking by manually adjusting the position and attitude angle of fast mirror 5
The semi-cone angle α of optical path, then the azimuth A and pitch angle E that composite shaft pointing system 6 tracks also accordingly change, and tracking angular rate
Derivation of time t for one swing circle and secondary derived function can be obtained by azimuth A respectively with tracking angle acceleration,
To change the matching relationship of tracking angular rate and tracking angle acceleration.
The real-time angular position of azimuth A and pitch angle E that composite shaft pointing system 6 tracks can be according to following formula meters
It calculates, Azimuth, Speed, Altitude and angular acceleration can be respectively by azimuth A to derivations of time t for a swing circle and secondary derivation
It is calculated, rate of pitch and angular acceleration same can adjust.By adjusting semi-cone angle α in advance before testing, composite shaft is matched
The tracking angular rate and tracking angle acceleration value of pointing system 6:
A=arcsin (sin α * sin wt/cos E)
E=arcsin (cos α * sin b+sin α * cos b*cos wt)
In formula, ω is rotating arm angular velocity of rotation；B is the angle of rotating arm rotation axis and horizontal plane.
In the present embodiment, it is preferred that the collimating fault is calculated according to following formula:
Δθp,x=arctan (xc-x0)
Δθp,y=arctan (yc-y0)
In formula, Δ θp,xFor the x-component of collimating fault, Δ θp,yFor the y-component of collimating fault, xcFor integral facula mass center
X is to component, ycTo integrate the y of facula mass center to component, x0For the x-component of 3 center of detector, y0For 3 centre bit of detector
The y-component set, Δ θpFor collimating fault；
The x of facula mass center is integrated to component xc, the y of facula mass center is integrated to component ycIt is calculated according to following formula:
In formula, P is the pointing light general power on detector, and m is the line number of detector cells, and n is the column of detector cells
Number, M are total line number of detector cells, and N is total columns of detector cells, xmnFor the x for the detector cells that m row n-th arranges
To coordinate, ymnThe y of the detector cells arranged for m row n-th is to coordinate.
The tracking error is calculated according to following formula:
In formula, Δ θT,xFor the x-component of tracking error, Δ θT,yFor the y-component of tracking error, Δ θj,x、Δθj,yFor jth group
Short exposure facula mass center is relative to x, y of long-term exposure spot mass center angu-lar deviation to component, Δ θ in dataTFor tracking error.
Wherein, the single image of the integral hot spot obtained after test is short exposure hot spot, and multiple image is accumulated as long exposure
Hot spot is respectively calculated it according to above-mentioned formula, obtains collimating fault, tracking error.
Those skilled in the art can carry out various modifications to the embodiment of the present invention and modification, if these modifications and change
For type within the scope of the claims in the present invention and its equivalent technologies, then these modifications and variations are also in protection scope of the present invention
Within.
The prior art that the content being not described in detail in specification is known to the skilled person.
Claims (10)
1. a kind of composite shaft pointing system performance testing device characterized by comprising
Pedestal (1)；
It indicates light source (2)；
Detector (3)；
Rotating arm (4), the rotating arm (4) are rotatably disposed on the pedestal (1)；
It is fixedly installed on the fast mirror (5) of the rotating arm (4) one end, the fast mirror (5) is used for the finger
Show that the instruction light that light source (2) issue reflexes to composite shaft pointing system (6), and the pointing that composite shaft pointing system (6) is issued
Light reflexes to the detector (3)；
The driver being set on the fast mirror (5)；
Controller, the controller are connected with the rotating arm (4), driver, and the rotation for controlling rotating arm (4),
And control driver driving fast mirror (5) is vibrated.
2. composite shaft pointing system performance testing device as described in claim 1, it is characterised in that: the test device is also wrapped
It including spectroscope (7), the spectroscope (7) is set in the optical path between instruction light source (2) and fast mirror (5), point
Light microscopic (7) has transmission plane and reflecting surface, and the transmission plane is used to indicate that the part that light source (2) issue to indicate light transmission to institute
It states detector (3) and forms instruction luminous point, and the pointing light transmission that composite shaft pointing system (6) is issued to detector (3) are formed
Hot spot is integrated, the reflecting surface is used to indicate that the part instruction light that light source (2) issue to reflex to the fast mirror (5).
3. composite shaft pointing system performance testing device as claimed in claim 2, it is characterised in that: the test device is also wrapped
It includes the unit that is coupled and aligned (8), the unit that is coupled and aligned (8) is set between the instruction light source (2) and the spectroscope (7)
Optical path on, the unit that is coupled and aligned (8) is used to adjust the optical path of instruction light, indicates position of the luminous point on detector (3) to adjust
It sets.
4. composite shaft pointing system performance testing device as claimed in claim 2, it is characterised in that: the test device is also wrapped
Guide-lighting baffle (9) and pyramid (10) are included, the instruction light that the pyramid (10) is used to be transmitted by the spectroscope (7) is through being divided
Mirror (7) reflexes to detector (3), and the leaded light baffle (9) is connected with controller, and guide-lighting baffle (9) includes
Open state, when in the open state, the instruction illumination of spectroscope (7) transmission is incident upon pyramid (10)；
Closed state, when in the closed position, the instruction light of spectroscope (7) transmission are blocked by guide-lighting baffle (9).
5. composite shaft pointing system performance testing device as claimed in claim 2, it is characterised in that: opened in the pedestal (1)
Equipped with guide lighting channel, the guide lighting channel is described to lead in the optical path between the spectroscope (7) and fast mirror (5)
The concentric rotation axis of optical channel and the rotating arm (4) is arranged, and is fixedly installed the first reflecting mirror on the rotating arm (4)
(11), first reflecting mirror (11) is used to the instruction light in guide lighting channel reflexing to the fast mirror (5).
6. composite shaft pointing system performance testing device as claimed in claim 5, it is characterised in that: opened on the pedestal (1)
Equipped with the light inlet being connected to the guide lighting channel, light of the light inlet between the spectroscope (7) and guide lighting channel
On the road, the guide lighting channel in pedestal (1) and light inlet connectivity part are provided with the second reflecting mirror (12), second reflecting mirror (12)
For the instruction light at light inlet to be reflexed to first reflecting mirror (11).
7. a kind of composite shaft pointing system performance testing method, which comprises the steps of:
Test device as described in claim 1 is provided；
The position for adjusting composite shaft pointing system (6) and test device, makes the rotary middle point of composite shaft pointing system (6), and
Optical path between fast mirror (5) and composite shaft pointing system (6) is overlapped with the intersection point of the rotary shaft of rotating arm (4)；
Indicate that light source (2) issue instruction light, composite shaft pointing system (6) tracks the instruction light；
According to testing requirement, controls fast mirror (5) and remain stationary or vibrated according to predeterminated frequency；
Control rotating arm (4), which rotates, simultaneously to be ramped up, and when its angular speed or angular acceleration reach preset value, stops accelerating, rotation
Pivoted arm (4) remains a constant speed rotation；
Composite shaft pointing system (6) issues pointing light, and integral hot spot is formed on detector (3)；
The integral hot spot is handled to obtain n group test data, according to the n group test data calculate collimating fault and
Tracking error.
8. composite shaft pointing system performance testing method as claimed in claim 7, which is characterized in that the test device is also wrapped
It includes the unit that is coupled and aligned (8), the unit that is coupled and aligned (8) is used to adjust the optical path of instruction light, is being visited with adjustment instruction luminous point
The position on device (3) is surveyed, further comprising the steps of before composite shaft pointing system (6) issues pointing light:
Indicate that light source (2) issue instruction light, adjustment is coupled and aligned unit (8), makes the instruction for indicating that light is formed on detector (3)
Luminous point is located at picture centre.
9. composite shaft pointing system performance testing method as claimed in claim 7 or 8, which is characterized in that the collimating fault
It is calculated according to following formula:
Δθp,x=arctan (xc-x0)
Δθp,y=arctan (yc-y0)
In formula, Δ θp,xFor the x-component of collimating fault, Δ θp,yFor the y-component of collimating fault, xcFor integrate facula mass center x to point
Amount, ycTo integrate the y of facula mass center to component, x0For the x-component of detector center, y0It is y points of detector center
Amount, Δ θpFor collimating fault；
The x of facula mass center is integrated to component xc, the y of facula mass center is integrated to component ycIt is calculated according to following formula:
In formula, P is the pointing light general power on detector, and m is the line number of detector cells, and n is the columns of detector cells, M
For total line number of detector cells, N is total columns of detector cells, xmnThe x of the detector cells arranged for m row n-th is to seat
Mark, ymnThe y of the detector cells arranged for m row n-th is to coordinate.
10. composite shaft pointing system performance testing method as claimed in claim 7 or 8, which is characterized in that the tracking error
It is calculated according to following formula:
In formula, Δ θT,xFor the x-component of tracking error, Δ θT,yFor the y-component of tracking error, Δ θj,x、Δθj,yFor test data
Short exposure facula mass center is relative to x, y of long-term exposure spot mass center angu-lar deviation to component, Δ θ in middle jth group dataTFor with
Track error.
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| CN112903246A (en) * | 2021-01-20 | 2021-06-04 | 西安应用光学研究所 | Method for measuring stability precision of coarse-fine combined two-stage stable photoelectric system |
| CN113365919A (en) * | 2020-06-23 | 2021-09-07 | 深圳市大疆创新科技有限公司 | Test equipment, test method and flight test system |
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