CN104457785A - Dynamic LCOS (liquid crystal on silicon) spliced-type star simulator and ground calibrating device of star sensor - Google Patents
Dynamic LCOS (liquid crystal on silicon) spliced-type star simulator and ground calibrating device of star sensor Download PDFInfo
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- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
Abstract
The invention provides a dynamic LCOS (liquid crystal on silicon) spliced-type star simulator and a ground calibrating device of a star sensor. The dynamic LCOS spliced-type star simulator comprises a star atlas display system, an illumination system and an optical system, wherein the star atlas display system comprises an LCOSI and a LCOSII which act as display devices of the dynamic star simulator by adopting an image surface splicing mode. According to the ground calibrating device of the star sensor, by means of the advantages of small pixel size, good dynamic property, high definition, high contrast ratio, high aperture opening ratio and low cost of the LCOS, a two-LCOS splicing technique is adopted for expanding the pixel surface, so that not only is the resolution ratio for star atlas simulation improved, but also the atlas simulation precision is improved.
Description
Technical field
The present invention relates to spacecraft ground calibration technique, particularly relate to a kind of dynamically spliced star simulator of LCOS and star sensor ground surface caliberating device.
Background technology
Along with the development of Space Science and Technology, spacecraft has more and more trended towards adopting space optics attitude sensor to carry out seizure and the measurement of real-time attitude, and adopt celestial guidance to replace inertial navigation, the star sensor of single shaft or three axle gyrocontrol states is replaced by star chart real time correction, stable aircraft attitude, be widely used at present, the flight position deviation that aircraft can provide in real time according to it and attitude misalignment, start servo-drive system at any time to correct these deviations.
Star simulator as the important component part of star sensor ground calibration device, for simulating position, the brightness and spectral characteristic etc. of sky culminant star.Star simulator can be divided into static star simulator and Dynamic Star simulator according to the difference of working method.Static star simulator essence is a parallel light tube, star tester is placed in position of focal plane, after light source irradiation, star tester just can be imaged onto infinite distance by parallel light tube and simulate star chart, the structure of this star simulator is simple, does not have requirement of real-time, can realize the high-precision analog of single star subtended angle, asterism position and magnitude, but can only simulate single star chart, dirigibility is not high.Dynamic Star simulator is then usual using liquid crystal light valve etc. as star chart display device, by the control of computer software to each pixel, realizes controlling the dynamic similation of star chart and the magnitude of asterism.This star simulator structure is comparatively complicated, requires high to star chart refresh rate, and owing to being subject to the restriction of Pixel Dimensions and image resolution ratio when simulating asterism, often simulation precision is high not as static star simulator.
Summary of the invention
The invention provides a kind of dynamically spliced star simulator of LCOS and star sensor ground calibration device, utilize LCOS as star chart display device, by means of LCOS, there is the little advantage of Pixel Dimensions, propose two panels LCOS splicing and expand image planes, to improve precision and the dirigibility of star image simulation.
Described LCOS, Liquid Crystal on Silicon, namely the attached silicon of liquid crystal, is also liquid crystal on silicon, is a kind of based on reflective-mode, the matrix liquid crystal display device that size is very little.
The invention provides a kind of dynamically spliced star simulator of LCOS, comprising:
Star chart display system, comprises star chart correcting module, star chart control module, LCOS I and LCOS II.
Described star chart correcting module is used for revising the asterism position of described LCOS I and described LCOS II display according to angular distance (Nation Astronomical Observatory field provides angular distance between theoretical star after seeing star) between fixed star theoretical star, matching asterism position correction equation, by described asterism position correction to meeting angular distance simulation precision between described theoretical star, and described asterism position correction equation is write described star chart control module;
Described star chart control module is used for the described asterism position correction equation that the championship indicator signal being used to indicate current time asterism position exported according to star sensor, the magnitude indicator signal being used to indicate the brightness of current time asterism and described star chart correcting module write described star chart control module, produce championship control signal and the magnitude simulating signal of current time, and export;
Described LCOS I is connected with described star chart control module with described LCOS II, described LCOS I and described LCOS II receives the described championship control signal of the current time that described star chart control module produces and described magnitude simulating signal, produce simulation star chart, comprise asterism position and the magnitude brightness of current time, and export;
Described star chart control module controls described LCOS I and described LCOS II simultaneously;
Illuminator, comprises analog switch module, light emitting module, collimated light module and PBS prism;
Described analog switch module comprises analog switch and analog channel, described analog switch is for controlling the duty of described analog switch module, described analog channel is connected with described star chart control module, for receiving the described magnitude simulating signal of the current time that described star chart control module sends, and export;
Described light emitting module comprises amplification and current driving circuit and LED, described amplification and current driving circuit are connected with described LED, described amplification and current driving circuit connect with described analog switch module, described amplification and current driving circuit are used for the described magnitude simulating signal received to carry out amplification and voltage-current transformation process, generation current outputs signal, to drive described LED luminous;
Described collimated light module comprises ellipsoidal reflector, first positive lens and the first negative lens, described ellipsoidal reflector has the first focus and the second focus, described first focus places described LED, described LED is after described ellipsoidal reflector, convergence of rays is in the second focus of described ellipsoidal reflector, described second focus overlaps with the focus of the combinative optical system that described first positive lens and described first negative lens are formed, the described light converging at described ellipsoidal mirror second focus through described ellipsoidal reflector first focus that described LED sends, after described first positive lens and described first negative lens, export directional light, described directional light is through described PBS prism, illuminate described LCOS I and described LCOS II,
Described PBS, Polarized Beam Splitter, i.e. polarization splitting prism, the line polarisation being divided into two bundles vertical the nonpolarized light of incidence, described PBS prism has light splitting surface, and the described directional light through described collimated light module that described light splitting surface is used for described LED to send is modulated to P polarized light I and S polarized light I;
Described P polarized light I by described light splitting surface through, light described LCOS I, described LCOS I receives described P polarized light I, change the polarization state of described P polarized light I, described P polarized light I is become S polarized light II, and described S polarized light II is by outgoing after the described light splitting surface reflection of described PBS prism;
Described S polarized light I is reflected by described light splitting surface, light described LCOS II, described LCOS II receives described S polarized light I, changes the polarization state of S polarized light I, described S polarized light I is become P polarized light II, and described P polarized light II is by outgoing after the described light splitting surface transmission of described PBS prism;
Optical system, comprise the second positive lens, 3rd positive lens, second negative lens, 3rd negative lens, 4th positive lens, 4th negative lens, 5th positive lens and the 6th positive lens, described second positive lens, described 3rd positive lens, described second negative lens, described 3rd negative lens, described 4th positive lens, described 4th negative lens, described 5th positive lens and described 6th positive lens are successively set on the optical axis of same level light path, the light that described illuminator sends is through described second positive lens, described 3rd positive lens, described second negative lens, described 3rd negative lens, described 4th positive lens, described 4th negative lens, exiting parallel after described 5th positive lens and described 6th positive lens,
The invention provides a kind of LCOS joining method, comprise described LCOS I, described LCOS II, described PBS prism, described collimated light module and described LED.
Described LCOS I, described LCOS II and described collimated light module are positioned at the workplace place of described PBS separately;
The described workplace of described PBS prism comprises workplace I, workplace II, workplace III and workplace IV;
Described collimated light module is positioned on described workplace I, after described LED is positioned at collimated light module;
The described directional light through described collimated light module that described LED sends, after the described light splitting surface of described PBS prism, described directional light is modulated to P polarized light I and S polarized light I;
Described P polarized light I, through the described light splitting surface of described PBS prism, lights the described LCOS I of the described workplace II being positioned at described PBS prism;
After described LCOS I is lit, after the described light splitting surface of described PBS, imaging is on the described workplace IV of described PBS;
Described S polarized light I is reflected by the described light splitting surface of described PBS prism, lights the described LCOS II of the described workplace III being positioned at described PBS prism;
After described LCOS II is lit, after the described light splitting surface of described PBS prism, imaging is on the described workplace IV of described PBS;
The described workplace IV of described PBS completes the image mosaic of described LCOS I and described LCOS II, and described stitching image is positioned at the position of focal plane of described optical system;
The invention provides a kind of star sensor ground calibration device, comprise horizontal adjusting mechanism, also comprise as the spliced star simulator of dynamic LCOS provided by the invention, the spliced star simulator of described dynamic LCOS is arranged on horizontal adjusting mechanism.
As shown from the above technical solution, the spliced star simulator of dynamic LCOS provided by the invention and star sensor ground calibration device, utilize LCOS as star chart display device, LCOS device is that the one on traditional liquid crystal light valve chip structure basis is improved, improve the physics resolving power of the utilization factor of light, the aperture opening ratio of pixel, brightness of image and chip, overcome liquid crystal light valve molecule in horizontal, normality is " on state of ", by the impact of oriented film, the shortcoming that " dark-state " is black not, self low-power consumption of LCOS and the life-span long.Meanwhile, by means of LCOS, there is the little advantage of Pixel Dimensions, propose two panels LCOS splicing and expand image planes, to improve precision and the dirigibility of star image simulation.And optical system is separate type optical system, can avoid the impact of cemented surface on imaging of cemented doublet, further increase imaging precision, and the optical element used is few, structure is simple, is conducive to processing and assembling.
Accompanying drawing explanation
The spliced star simulator structural representation of dynamic LCOS that Fig. 1 provides for the embodiment of the present invention one;
Fig. 2 is the structural representation of star chart display system in Fig. 1;
Fig. 3 is the structural representation of illuminator in Fig. 1;
The optical system structure schematic diagram of the Dynamic Star simulator that Fig. 4 provides for the embodiment of the present invention two;
The optical system structure schematic diagram of the Dynamic Star simulator that Fig. 5 provides for the embodiment of the present invention three;
The optical system structure schematic diagram of the spliced star simulator of dynamic LCOS that Fig. 6 provides for the embodiment of the present invention four;
The star sensor ground surface caliberating device that Fig. 7 provides for the embodiment of the present invention five.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.It should be noted that, in accompanying drawing or instructions, similar or identical element all uses identical Reference numeral.
Embodiment one
The spliced star simulator structural representation of dynamic LCOS that Fig. 1 provides for the embodiment of the present invention one, Fig. 2 is the structural representation of star chart display system 82 in Fig. 1, and Fig. 3 is the structural representation of illuminator 81 in Fig. 1.As shown in Figure 1, Figure 2 and Figure 3, the spliced star simulator of dynamic LCOS provided in this enforcement specifically can be applied to be demarcated the ground of star sensor, and the spliced star simulator of dynamic LCOS that the present embodiment provides specifically comprises star chart display system 82, illuminator 81 and optical system 83.
Star chart display system 82 comprises LCOS I 22, LCOS II 23, star chart control module 24 and star chart correcting module 25.LCOS I 22 and LCOS II 23 is for the star chart display device of star simulator, LCOS I 22 is connected with star chart control module 24 respectively with LCOS II 23, LCOS I 22 and LCOS II 23 receive that star chart display module sends respectively in order to indicate the championship indicator signal of current time asterism position and in order to indicate the magnitude indicator signal of current time asterism brightness to produce championship control signal and magnitude simulating signal, and to export.Star chart correcting module 25 is for the simulation star chart according to the current time of angular distance value correction LCOS I 22 and LCOS II 23 display between fixed star theoretical star, by calculating and the pixel coordinate position of each asterism of matching asterism position correction equation change LCOS I 22 and LCOS II 23 display, thus by angular distance between angular distance correction to the theoretical star met in true starry sky between fixed star between the star of each asterism in simulation star chart, and by asterism position correction equation write star chart control module 24.Star chart control module 24 is for the asterism positional information that sends according to star sensor and magnitude analog information, and the asterism position correction equation that star chart correcting module 25 writes, send the asterism position being used to indicate star simulator current time championship control signal and in order to indicate the magnitude simulating signal of the asterism brightness of current time, the championship control signal that LCOS I 22 and LCOS II 23 reception star chart display module sends and magnitude simulating signal, show the simulation star chart of revised current time.
Illuminator 81 comprises analog switch 11, analog channel 12, amplifies and current driving circuit 13, LED14, collimated light module 15 and PBS prism 16.Analog switch 11 is for the duty of control simulation path 12, and analog channel 12 is connected with star chart control module 24, for receiving the magnitude simulating signal of star chart control module 24 current time.Amplification and current driving circuit 13 are connected with LED14, amplification and current driving circuit 13 are connected with analog channel 12, amplification and current driving circuit 13 carry out amplification and voltage-current transformation process for the magnitude simulating signal that will receive, and generation current outputs signal, luminous with driving LED 14.LED14 is used for the light source of the spliced star simulator of dynamic LCOS, receives the control signal of amplification and current driving circuit 13, sends the divergent rays of different brightness.Collimated light module 15 comprises ellipsoidal reflector 151, first positive lens 152 and the first negative lens 153, the divergent rays collimation of collimated light module 15 for LED14 is sent, LED14 is positioned at the first focus of ellipsoidal reflector 151, LED14 is after ellipsoidal reflector 151, the divergent rays that LED14 sends is focused at the second focus of ellipsoidal reflector 151, the focus that second focus and first positive lens 152 and the first negative lens 153 of ellipsoidal reflector 151 form optical system 83 overlaps, LED14 is after the first positive lens 152 and the first negative lens 153, the light that LED14 sends is modulated to collimated light.The polarization state of collimated light of PBS prism 16 for changing LED14 and sending, PBS prism 16 has light splitting surface, collimated light is modulated to P polarized light and S polarized light by light splitting surface, the light splitting surface transmitting P-type polarisation light reflect s-polarized light of PBS prism 16, the polarized light through PBS modulation lights LCOS I 22 and LCOS II 23.
Optical system 83 comprises the second positive lens 31, 3rd positive lens 32, second negative lens 33, 3rd negative lens 34, 4th positive lens 35, 4th negative lens 36, 5th positive lens 37 and the 6th positive lens 38, second positive lens 31, 3rd positive lens 32, second negative lens 33, 3rd negative lens 34, 4th positive lens 35, 4th negative lens 36, 5th positive lens 37 and the 6th positive lens 38 are successively set on the optical axis of same level light path, the light that illuminator 81 sends lights the simulation star chart of the current time that LCOS I 22 and LCOS II 23 shows, star chart is through the second positive lens 31, 3rd positive lens 32, second negative lens 33, 3rd negative lens 34, 4th positive lens 35, 4th negative lens 36, 5th positive lens 37 and the rear exiting parallel of the 6th positive lens 38, the star map achieved from infinite distance is simulated.
Concrete, star chart correcting module 25 exports to the asterism position correction equation of star chart control module 24, is to utilize the unique point in the star chart viewing area of transit test LCOS I 22 and LCOS II 23 splicing image planes, by MATLAB matching asterism position correction equation.The spliced star chart viewing area of LCOS I 22 and LCOS II 23 is made up of 1920 × 1920 pixels, each Pixel Dimensions is 8 μm × 8 μm, concrete 1920 × 1920 pixels are divided into 10 × 10 grid, get test grid intersection as unique point, survey its picture element position information, angular distance between star is calculated according to picture element position information, and angular distance compares between fixed star theoretical star, under calculating current time, the asterism position correction information of 10 × 10 each unique points, according to asterism correction position information matching asterism position correction equation.
Concrete, the photocentre of the second positive lens 31, the 3rd positive lens 32, second negative lens 33, the 3rd negative lens 34, the 4th positive lens 35, the 4th negative lens 36, the 5th positive lens 37 and the 6th positive lens 38 is all positioned on same optical axis, can be fixed by each lens by spacer ring, trim ring and lens barrel.Second positive lens 31 material is specifically as follows H-ZLAF78 glass, belongs to heavy-lanthanide flint glass.3rd positive lens 32 material is specifically as follows H-ZLAF56A glass, belongs to heavy-lanthanide flint glass.Second negative lens 33 material is specifically as follows TF3 glass, belongs to extraordinary flint glass.3rd negative lens 34 material is specifically as follows H-ZF72A glass, belongs to dense flint glass.4th positive lens 35 material is specifically as follows H-ZLAF68 glass, belongs to heavy-lanthanide flint glass.4th negative lens 36 material is specifically as follows H-ZF72A glass, belongs to dense flint glass.5th positive lens 37 material is specifically as follows H-LAK2 glass, belongs to lanthanum crown glass.6th positive lens 38 material is specifically as follows H-ZLAF68 glass, belongs to heavy-lanthanide flint glass.Each lens may also be the material adopting other to have low dispersion high index of refraction, are not limited with the present embodiment.The focal length of the second positive lens 31, the 3rd positive lens 32, second negative lens 33, the 4th positive lens 35, the 5th positive lens 37, the 3rd negative lens 34, the 6th positive lens 38 and the 7th positive lens is specifically as follows 40mm, the light that illuminator 81 sends forms directional light after the process of each lens of optical system 83, star chart is imaged onto infinite distance, to simulate the star map image that star sensor observes in-orbit.
The spliced star simulator of dynamic LCOS that the present embodiment provides, star chart display system 82 can realize the star chart positional information according to receiving the current time that star sensor sends, star chart correcting module 25 is coordinated to write the asterism position correction equation of star chart control module 24, the asterism position that real-time control current time LCOS I 22 and LCOS II 23 shows, ensure that the asterism position of LCOS I 22 and LCOS II 23 display meets the accuracy requirement of angular distance between theoretical star, improve dynamic and the star image simulation precision of star image simulation.Illuminator 81 can realize according to magnitude simulating signal control LED14 luminous, and by collimated light module 15, the divergent rays sent by LED14 is modulated to collimated light, then the polarization state changing collimated light through PBS prism 16 is to light LCOS I 22 and LCOS II 23.The brightness of LED14 luminescence can control according to the current signal of magnitude simulating signal generation respective magnitudes, to simulate the brightness of asterism.LED14 can produce highlighted element, and the adjustable extent of brightness is large, and after collimated light module 15 is modulated brightness uniformity, which thereby enhance resolution and the contrast of star image simulation, improve the precision of star image simulation.And optical system 83 is separate type optical system 83, can avoid the impact of cemented surface on imaging of cemented doublet, further increase imaging precision, and the optical element used is few, structure is simple, is conducive to processing and assembling.
Embodiment two
Optical system 83 structural representation of the Dynamic Star simulator that Fig. 4 provides for the embodiment of the present invention two, as shown in Figure 4, in an embodiment, display device in star chart display system 82 can be LCOS I 22, LCOS I 22 is positioned at the position of focal plane of optical system 83, and it is relative with illuminator 81, the collimated light that illuminator 81 sends, after the modulation of PBS prism 16 light splitting surface, light the P polarized light I of light by PBS transmission of LCOS I 22, after LCOS I 22 is lit, the P polarized light I that projection comes is modulated to S polarized light II, form simulation star chart, according to reflection law, the former road of simulation star chart that S polarized light II is formed returns, again when PBS prism 16, reflected by PBS prism 16 light splitting surface, the simulation star chart that S polarized light II is formed enters the optical system 83 of star simulator.Exiting parallel after the second positive lens 31, the 3rd positive lens 32, second negative lens 33, the 3rd negative lens 34, the 4th positive lens 35, the 4th negative lens 36, the 5th positive lens 37 and the 6th positive lens 38, the star map achieved from infinite distance is simulated.
Embodiment three
Optical system 83 structural representation of the Dynamic Star simulator that Fig. 5 provides for the embodiment of the present invention two.As shown in Figure 5, the optical system 83 of the Dynamic Star simulator that the present embodiment provides is with the difference of embodiment two, can also change the working position of display device.In an embodiment, display device in star chart display system 82 can be LCOS II 23, LCOS II 23 is positioned at the position of focal plane of optical system 83, and with illuminator 81 90 ° each other, the collimated light that illuminator 81 sends, after the modulation of PBS prism 16 light splitting surface, the S polarized light I that the light lighting LCOS II 23 is reflected by PBS prism 16, after LCOS II 23 is lit, the S polarized light I that projection comes is modulated to P polarized light II, form simulation star chart, according to reflection law, the former road of simulation star chart that P polarized light II is formed returns, again when PBS prism 16, by the transmission of PBS prism 16 light splitting surface, the simulation star chart that P polarized light II is formed enters the optical system 83 of star simulator.Exiting parallel after the second positive lens 31, the 3rd positive lens 32, second negative lens 33, the 3rd negative lens 34, the 4th positive lens 35, the 4th negative lens 36, the 5th positive lens 37 and the 6th positive lens 38, the star map achieved from infinite distance is simulated.
Embodiment four
Optical system 83 structural representation of the spliced star simulator of dynamic LCOS that Fig. 6 provides for the embodiment of the present invention four.As shown in Figure 6, optical system 83 structure of the spliced star simulator of dynamic LCOS that provides of the present embodiment and the difference of embodiment two and embodiment three are the number of LCOS.In an embodiment, use LCOS I 22 and LCOS II 23 simultaneously as display device, LCOS I 22 is positioned at the position of focal plane of optical system 83, relative with illuminator 81, LCOS II 23 is positioned at the position of focal plane of optical system 83, and with illuminator 81 90 ° each other, wherein the resolution of LCOS I 22 is 1920 × 1080, the resolution of LCOS II 23 is 1920 × 1080, and the size of each pixel is 8 μm × 8 μm.Use 1920 × 1080 pixel regions of LCOS I 22, use 1920 × 840 pixel regions of LCOS II 23, utilize PBS prism 16 to realize the image planes splicing of LCOS I 22 and LCOS II 23, after splicing, the star chart viewing area of image planes is 1920 × 1920.
Concrete, the collimated light that illuminator 81 sends, after the modulation of PBS prism 16 light splitting surface, forms a branch of P polarized light I and a branch of S polarized light I.PBS prism 16 transmitting P-type polarisation light I, P polarized light I lights LCOS I 22, and the P polarized light I that projection comes is modulated to S polarized light II by the LCOS I 22 be lit, and forms the simulation star chart I that viewing area scope is 1920 × 1080.PBS prism 16 reflect s-polarized light I, S polarized light I lights LCOS II 23, and the S polarized light I that projection comes is modulated to P polarized light II by the LCOS II 23 be lit, and forms the simulation star chart II that viewing area scope is 1920 × 1080.According to reflection law, the simulation star chart I that S polarized light II is formed and the former road of simulation star chart II that P polarized light II is formed return, again when PBS prism 16, S polarized light II is reflected by the light splitting surface of PBS, P polarized light II by the light splitting surface transmission of PBS, be spliced to form viewing area be 1920 × 1920 simulation star chart enter the optical system 83 of star simulator.Exiting parallel after the second positive lens 31, the 3rd positive lens 32, second negative lens 33, the 3rd negative lens 34, the 4th positive lens 35, the 4th negative lens 36, the 5th positive lens 37 and the 6th positive lens 38, the star map achieved from infinite distance is simulated.
Embodiment five
The star sensor ground calibration device that Fig. 7 provides for embodiment five.As shown in Figure 7, star sensor ground surface caliberating device is specially star sensor ground calibration device, it comprises, horizontal adjusting mechanism, be arranged at the LCOS I 22 on horizontal adjust structure and LCOS II 23, for it provides the star chart control module 24 of asterism position signalling and magnitude simulating signal after being arranged at LCOS I 22 and LCOS II 23, for it provides the star chart correcting module 25 of asterism position correction equation after being arranged at star chart control module 24, for it provides the PBS prism 16 of polarized light before being arranged at LCOS II 23 and LCOS II 23, be arranged at PBS prism 16 times and provide the collimated light module 15 of collimated ray for it, be arranged at collimated light module 15 times and provide the ellipsoidal reflector 151 of collecting optics for it, and optical system 83 focal plane of collimated light module 15 overlaps with the second focus of ellipsoidal reflector 151, be arranged at the LED14 at ellipsoidal reflector 151 first focus place, be arranged at the front optical filter 30 for simulated spectra scope of PBS prism 16, star chart for being simulated by LCOS I 22 and LCOS II 23 before being arranged at optical filter 30 is imaged onto the optical system 83 of infinite distance.
Concrete, star chart correcting module 25, for according to angular distance between the star of actual measurement asterism position and angular distance between fixed star theoretical star, calculates asterism positional information, utilizes MATLAB matching asterism position correction equation, and by asterism position correction equation write star chart control software design.Star chart control software design receives asterism position signalling and the magnitude simulating signal of the current time star chart that star sensor provides, coordinate the asterism update equation that star chart correcting module 25 writes, control LCOS I 22 and LCOS II 23 shows the simulation star chart under current time, star image simulation precision is better than 18 "; star image simulation visual field is 22 °, and magnitude simulation context is-2Mv ~+6Mv; LED14 is used for providing light source for star sensor ground calibration device, can realize Dimmable and uniform requirement; Ellipsoidal reflector 151 is assembled for the divergent rays sent by LED14, and require that LED14 is placed in the first focus of ellipsoidal reflector 151, then the light that LED14 sends will be focused at the second focus of ellipsoidal reflector 151; Collimated light module 15 is for generation of the collimated ray meeting LCOS I 22 and LCOS II 23 ignition condition, require that the focus of collimated light module 15 optical system 83 overlaps with ellipsoidal reflector 151 second focus, therefore the light being focused at ellipsoidal reflector 151 second focus sent by LED14, after the optical system 83 of collimated light module 15, become brightness uniformity and the light of collimation, then LCOS I 22 and LCOS II 23 can be lighted after PBS prism 16; Optical filter 30 is for realizing 0.5 μm ~ 0.8 μm spectral range of star sensor requirement; Optical system 83 is a kind of little distortion, the wave aberration that are made up of eight lens and ratio chromatism, is little, the uniform high imaging quality projection optical system 83 of disc of confusion, completes the high-quality infinite distance imaging to the star chart that LCOS I 22 and LCOS II 23 simulates.
The course of work utilizing star sensor ground surface caliberating device of the present invention to carry out star image simulation is as follows: be arranged on the focal plane of optical system 83 by LCOS I 22 and LCOS II 23, by the light source of LED14 as LCOS I 22 and LCOS II 23, the light that LED14 sends after collimated light module 15 with the outgoing of uniform collimated ray form, after PBS prism 16, collimated ray is modulated into P polarized light and S polarized light, P polarized light and S polarized light light LCOS I 22 and LCOS II 23 respectively, LCOS I 22 image planes and LCOS II 23 image planes realize image planes splicing by PBS light splitting surface again, by the championship control signal under the current time of display on star chart display system 82 control LCOS I 22 and LCOS II 23 and star image simulation signal, and there is championship control signal and star image simulation signal real-time variable function.The simulation star chart of the current time that LCOS I 22 and LCOS II 23 show, after filtration after mating plate 30 and optical system 83, achieves the simulation star chart coming from infinite distance that angular distance simulation precision between spectral range and star meets star sensor requirement.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. the spliced star simulator of dynamic LCOS, is characterized in that, comprising:
Star chart display system, comprises star chart correcting module, star chart control module, LCOS I and LCOS II (equally);
Described star chart correcting module is used for the asterism position according to LCOS I and described LCOS II shows described in angular distance correction between fixed star theoretical star, matching asterism position correction equation, by described asterism position correction to meeting angular distance simulation precision between described theoretical star, and described asterism position correction equation is write described star chart control module;
Described star chart control module is used for the described asterism position correction equation that the championship indicator signal being used to indicate current time asterism position exported according to star sensor, the magnitude indicator signal being used to indicate the brightness of current time asterism and described star chart correcting module write described star chart control module, produce championship control signal and the magnitude simulating signal of current time, and export;
Described LCOS I is connected with described star chart control module with described LCOS II, described LCOS I and described LCOS II receives the described championship control signal of the current time that described star chart control module produces and described magnitude simulating signal, produce simulation star chart, comprise asterism position and the magnitude brightness of current time, and export;
Described star chart control module controls described LCOS I and described LCOS II simultaneously;
Illuminator, comprises analog switch module, light emitting module, collimated light module and PBS prism;
Described analog switch module comprises analog switch and analog channel, described analog switch is for controlling the duty of described analog switch module, described analog channel is connected with described star chart control module, for receiving the described magnitude simulating signal of the current time that described star chart control module sends, and export;
Described light emitting module comprises amplification and current driving circuit and LED, described amplification and current driving circuit are connected with described LED, described amplification and current driving circuit connect with described analog switch module, described amplification and current driving circuit are used for the described magnitude simulating signal received to carry out amplification and voltage-current transformation process, generation current outputs signal, to drive described LED luminous;
Described collimated light module comprises ellipsoidal reflector, first positive lens and the first negative lens, described ellipsoidal reflector has the first focus and the second focus, described first focus places described LED, described LED is after described ellipsoidal reflector, convergence of rays is in the second focus of described ellipsoidal reflector, described second focus overlaps with the focus of the combinative optical system that described first positive lens and described first negative lens are formed, the described light converging at described ellipsoidal mirror second focus through described ellipsoidal reflector first focus that described LED sends, after described first positive lens and described first negative lens, export directional light, described directional light is through described PBS prism, illuminate described LCOS I and described LCOS II,
Described PBS prism has light splitting surface, and the described directional light through described collimated light module that described light splitting surface is used for described LED to send is modulated to P polarized light I and S polarized light I;
Described P polarized light I by described light splitting surface through, light described LCOS I, while described LCOS I is lit, P polarized light I be modulated to S polarized light II, and export;
Described S polarized light I is reflected by described light splitting surface, lights described LCOS II, while described LCOS II is lit, S polarized light I is modulated to P polarized light II, and exports;
Optical system, comprise the second positive lens, 3rd positive lens, second negative lens, 3rd negative lens, 4th positive lens, 4th negative lens, 5th positive lens and the 6th positive lens, described second positive lens, described 3rd positive lens, described second negative lens, described 3rd negative lens, described 4th positive lens, described 4th negative lens, described 5th positive lens and described 6th positive lens are successively set on the optical axis of same level light path, the light that described illuminator sends is through described second positive lens, described 3rd positive lens, described second negative lens, described 3rd negative lens, described 4th positive lens, described 4th negative lens, described 5th positive lens and parallel injection after described 6th positive lens.
2. the spliced star simulator of dynamic LCOS according to claim 1, is characterized in that:
Described asterism position correction equation draws according to the described asterism position calculation of the described simulation star chart that described LCOS I and described LCOS II shows;
Described asterism positional information is by (do not write concrete model, directly write transit) transit actual measurement, and measured value comprises orientation angles and the luffing angle of described asterism position.
3. the spliced star simulator of dynamic LCOS according to claim 1, is characterized in that, also comprise:
Optical filter, is arranged between described star chart display system and described optical system, and the light for penetrating from described optical filter carries out optical filtering process.
4. the spliced star simulator of dynamic LCOS according to claim 1, is characterized in that:
Described LCOS I and described LCOS II adopts image planes splicing, utilizes the light splitting surface of PBS prism to expand the image planes of the spliced star simulator of described dynamic LCOS;
Described PBS prism has light splitting surface, and the described directional light through described collimated light module that described light splitting surface is used for described LED to send is divided into P polarized light I and S polarized light I;
The described workplace of described PBS comprises workplace I, workplace II, workplace III and workplace IV;
Described collimated light module is positioned at the described workplace I of described PBS prism, after described LED is positioned at described collimated light module;
Described LCOS I is positioned at the described workplace II of described PBS prism;
Described LCOS II is positioned at the described workplace III of described PBS prism;
The described LED of described illuminator sends, and through the described directional light of described collimated light module, through the described light splitting surface of described PBS prism, is modulated to P polarized light I and S polarized light I;
Described P polarized light I by the described light splitting surface of described PBS prism through, light the described LCOS I of the described workplace II being positioned at described PBS prism;
Described S polarized light I is reflected by the described light splitting surface of described PBS prism, lights the described LCOS II of the described workplace III being positioned at described PBS prism;
The described LCOS I that described P polarized light I is lighted, after the described light splitting surface of described PBS prism, imaging is on the described workplace IV of described PBS prism;
The described LCOS II that described S polarized light I is lighted, after the described light splitting surface of described PBS prism, imaging is on the described workplace IV of described PBS prism;
The described workplace IV of described PBS prism completes the image mosaic of described LCOS I and described LCOS II;
Described stitching image is positioned at the position of focal plane of described optical system.
5., according to the arbitrary described spliced star simulator of dynamic LCOS of claim 1-4, it is characterized in that, described star chart control module comprises:
Controller, for producing magnitude digital signal and control signal according to the championship indicator signal being used to indicate asterism position received and the described magnitude indicator signal being used to indicate asterism brightness, and exports;
Digital to analog converter, is connected with described controller, for being described magnitude simulating signal by described magnitude digital signal through analog-converted, and to export.
6. a star sensor ground surface caliberating device, comprises horizontal adjusting mechanism, and also comprise as the spliced star simulator of dynamic LCOS in claim 1-5 as described in any one, the spliced star simulator of described dynamic LCOS is arranged on horizontal adjusting mechanism.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279473A (en) * | 2011-06-07 | 2011-12-14 | 长春理工大学 | Optical system of star simulator |
| CN102830498A (en) * | 2011-06-17 | 2012-12-19 | 中国科学院西安光学精密机械研究所 | Dynamic large-view-field small-distortion star simulator optical system |
| CN102927996A (en) * | 2012-10-24 | 2013-02-13 | 北京控制工程研究所 | High-precision dynamic imaging simulator for space target |
-
2014
- 2014-07-30 CN CN201410369099.2A patent/CN104457785B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279473A (en) * | 2011-06-07 | 2011-12-14 | 长春理工大学 | Optical system of star simulator |
| CN102830498A (en) * | 2011-06-17 | 2012-12-19 | 中国科学院西安光学精密机械研究所 | Dynamic large-view-field small-distortion star simulator optical system |
| CN102927996A (en) * | 2012-10-24 | 2013-02-13 | 北京控制工程研究所 | High-precision dynamic imaging simulator for space target |
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