CN104197961B - Star simulator based on bifocal optical system - Google Patents
Star simulator based on bifocal optical system Download PDFInfo
- Publication number
- CN104197961B CN104197961B CN201410483877.0A CN201410483877A CN104197961B CN 104197961 B CN104197961 B CN 104197961B CN 201410483877 A CN201410483877 A CN 201410483877A CN 104197961 B CN104197961 B CN 104197961B
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- star
- optical
- target plate
- liquid crystal
- crystal display
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- G—PHYSICS
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/02—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by astronomical means
- G01C21/025—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by astronomical means with the use of startrackers
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a star simulator based on a bifocal optical system. The star simulator comprises a liquid crystal display, an imaging lens, a multi-microporous star target plate, multiple optical fibers, a light source, a beam combiner and an optical collimating system; the optical axes of the liquid crystal display, the imaging lens and optical collimating system are in coincidence, the optical axis of the beam combiner and the optical axis of the optical collimating system form an angle of 45 degrees, and the multi-microporous star target plate is parallel to the optical axis of the optical collimating system; one end of each optical fiber is fixed on the multi-microporous star target plate, and the other end of each optical fiber is illuminated by the light source; the liquid crystal display is located on the focal plane of a compound optical system which comprises the imaging lens and the optical collimating system, and the multi-microporous star target plate is located in the focal plane of the optical collimating system. The star simulator based on the bifocal optical system disclosed by the invention realizes functions of simulating dynamically changed star maps, and further simulating static star maps of low background and low signal-to-noise ratios in a set of equipment.
Description
Technical field
The present invention relates to a kind of star analog.Simulate dress more particularly, to a kind of star based on bifocal optical systems
Put.
Background technology
The technology of Chinese Space space travel in recent years achieves development at full speed, the pose adjustment of spacecraft and navigation
Require increasingly precision, miniaturization.During aerospace navigation controls, the development of optics star sensor is the most prominent, because it has
Certainty of measurement is high, and movable members are few, and the features such as design service life is long, therefore it is the most rising in spacecraft and precision
One of highest attitude sensor.Star sensor determines that the object of reference of attitude is fixed star, it is carried out mainly make during ground detection
Use star simulator.The function of star simulator is mainly entered to characteristics such as the spectrum of infinity fixed star, illumination, collimation and colour temperatures
Row simulation.
Star simulator, as the visual plant of Star-Sensor Design and HWIL simulation checking, has obtained more and more extensive
Application, at present in visible photostar analog systemss, mainly have two kinds of analog forms：First, the star chart figure that computer generates in real time
Picture, is transferred to liquid crystal display by drive circuit, and liquid crystal display is arranged on the focal plane of optical alignment system, gives off
The star chart scene of infinity.This mode can simulate the star chart of dynamic change, but due to background luminance too high it is impossible to carry out low
Illumination star, the emulation of low signal-to-noise ratio；2nd, light source irradiates one end of multifiber, and the optical fiber other end is inserted in many micropores star target plate
Each micropore on, many micropores star target plate is arranged on the focal plane of optical alignment system, thus giving off many stars simulated scenario.
This mode can simulate the star chart scene of low background luminance, low signal-to-noise ratio, but star chart scene immobilizes.
Content of the invention
It is an object of the invention to provide a kind of star chart that can simulate dynamic change can simulate the low noise of low background again
The star analog of the static star chart of ratio.
For solving above-mentioned technical problem, the present invention adopts following technical proposals：
A kind of star analog based on bifocal optical systems, including liquid crystal display, image-forming objective lens, many micropores star target
Plate, some optical fiber, light source, light combination mirror and optical alignment system；Described liquid crystal display, image-forming objective lens and optical alignment system
Optical axis coincidence, the optical axis of described light combination mirror and the optical axis of optical alignment system be in 45 degree, described many micropores star target plate and optics
The optical axis of colimated light system is parallel；One end of described optical fiber is fixed on many micropores star target plate, and the other end of optical fiber is by described light source
Illuminate；Described liquid crystal display is located at the focal plane position of the complex optics of image-forming objective lens and optical alignment system composition,
Described many micropores star target plate is located at the focal plane position of optical alignment system.
Preferably, described light combination mirror is half-reflecting half mirror.
Beneficial effects of the present invention are as follows：
By image-forming objective lens, the angle of visual field corresponding to liquid crystal display is adjusted to and many micropores star target plate institute in the present invention
The corresponding angle of visual field is identical, and respectively the picture of liquid crystal display and many micropores star target plate is projected optical alignment by light combination mirror
In system, it is achieved thereby that the star chart of dynamic change can be simulated in a set of equipment, and low background low signal-to-noise ratio can be simulated
The function of static star chart.
Brief description
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in further detail.
Fig. 1 illustrates the structural representation of the present invention.
Specific embodiment
In order to be illustrated more clearly that the present invention, with reference to preferred embodiments and drawings, the present invention is done further
Bright.In accompanying drawing, similar part is indicated with identical reference.It will be appreciated by those skilled in the art that institute is concrete below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
As shown in figure 1, a kind of star analog based on bifocal optical systems, including liquid crystal display 1, many micropores star target
Plate 2, light combination mirror 3, optical alignment system 4, image-forming objective lens 5, optical fiber 6 and light source 7.Liquid crystal display 1, image-forming objective lens 5 and optics
The optical axis coincidence of colimated light system 4, the optical axis of light combination mirror 3 is in 45 degree with the optical axis of optical alignment system 4, and light combination mirror 3 is half anti-half
Lens；Many micropores star target plate 2 is parallel with the optical axis of optical alignment system 4；One end of optical fiber 6 is fixed on many micropores star target plate 2,
The other end of optical fiber 6 is illuminated by light source 7；Liquid crystal display 1 is located at image-forming objective lens 5 and the complex light of optical alignment system 4 composition
The focal plane position of system, many micropores star target plate 2 is located at the focal plane position of optical alignment system 4.On many micropores star target plate 2
It is provided with several holes, each hole is plugged with optical fiber 6, this star analog has polylith many micropores star target plate 2, more than each piece
Micropore star target plate 2 corresponds to a star chart, just can change star chart scene when converting different many micropores star target plates 2.
Due to liquid crystal display 1 effective display surface and many micropores star target plate 2 of different sizes, image-forming objective lens 5 are first to liquid
Crystal display 1 become once as so that liquid crystal display 1 picture optical alignment system 4 the angle of visual field and many micropores star target plate 2
The angle of visual field is identical.Because many micropores star target plate 2 is only imaged through optical alignment system 4, liquid crystal display 1 have passed through image-forming objective lens
5 and optical alignment system 4 complex imaging, therefore, both have different focal lengths, become bifocal optical systems.When need simulate
During low background low signal-to-noise ratio star chart, close liquid crystal display 1, many micropores star target plate 2 enters optical alignment after light combination mirror 3 reflection
System 4；When the star chart needing to simulate dynamic change, close the light source 7 of many micropores star target plate 2, the imaged thing of liquid crystal display 1
Optical alignment system is entered transmitted through light combination mirror 3 after mirror 5 imaging.This star analog can simulate dynamic change in a set of equipment
The star chart changed, and the star chart of low background low signal-to-noise ratio can be simulated.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right
The restriction of embodiments of the present invention, for those of ordinary skill in the field, also may be used on the basis of the above description
To make other changes in different forms, all of embodiment cannot be exhaustive here, every belong to this
Obvious change that bright technical scheme is extended out or change the row still in protection scope of the present invention.
Claims (2)
1. a kind of star analog based on bifocal optical systems it is characterised in that：Including liquid crystal display, image-forming objective lens, many
Micropore star target plate, some optical fiber, light source, light combination mirror and optical alignment system；Described liquid crystal display, image-forming objective lens and optics
The optical axis coincidence of colimated light system, the optical axis of described light combination mirror is in 45 degree with the optical axis of optical alignment system, described many micropores star target
Plate is parallel with the optical axis of optical alignment system；One end of described optical fiber is fixed on many micropores star target plate, the other end quilt of optical fiber
Described light source illuminates；Jiao that described liquid crystal display is located at the complex optics of image-forming objective lens and optical alignment system composition puts down
Face position, described many micropores star target plate is located at the focal plane position of optical alignment system, and this star analog has polylith and corresponds to
Described many micropores star target plate of different star charts, changes star chart scene by the described many micropores star target plate changing different.
2. star analog according to claim 1 it is characterised in that：Described light combination mirror is half-reflecting half mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410483877.0A CN104197961B (en) | 2014-09-19 | 2014-09-19 | Star simulator based on bifocal optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410483877.0A CN104197961B (en) | 2014-09-19 | 2014-09-19 | Star simulator based on bifocal optical system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104197961A CN104197961A (en) | 2014-12-10 |
| CN104197961B true CN104197961B (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410483877.0A Active CN104197961B (en) | 2014-09-19 | 2014-09-19 | Star simulator based on bifocal optical system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606388B (en) * | 2016-02-14 | 2018-05-08 | 长春理工大学 | The variable static star simulator of the split type magnitude with sky background is adjustable star chart |
| CN107346044A (en) * | 2016-05-04 | 2017-11-14 | 伍少昊 | Optical fiber brightening-type optics fixed star projector |
| CN106595713B (en) * | 2016-12-22 | 2019-10-08 | 中国科学院光电技术研究所 | Complex background simulation device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62229025A (en) * | 1986-03-31 | 1987-10-07 | Nec Corp | Star simulator |
| JPH03117095A (en) * | 1989-09-28 | 1991-05-17 | Nec Corp | Method and device for testing image pickup device |
| CN102116642A (en) * | 2009-12-31 | 2011-07-06 | 北京控制工程研究所 | Simulator of star sensor |
| CN102745345A (en) * | 2011-04-20 | 2012-10-24 | 北京控制工程研究所 | Ultraviolet fixed star simulator for calibrating ultraviolet navigation sensor |
| CN203444170U (en) * | 2013-09-18 | 2014-02-19 | 哈尔滨工业大学远光光电仪器有限公司 | Optical collimation system of infrared imaging target simulator |
-
2014
- 2014-09-19 CN CN201410483877.0A patent/CN104197961B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62229025A (en) * | 1986-03-31 | 1987-10-07 | Nec Corp | Star simulator |
| JPH03117095A (en) * | 1989-09-28 | 1991-05-17 | Nec Corp | Method and device for testing image pickup device |
| CN102116642A (en) * | 2009-12-31 | 2011-07-06 | 北京控制工程研究所 | Simulator of star sensor |
| CN102745345A (en) * | 2011-04-20 | 2012-10-24 | 北京控制工程研究所 | Ultraviolet fixed star simulator for calibrating ultraviolet navigation sensor |
| CN203444170U (en) * | 2013-09-18 | 2014-02-19 | 哈尔滨工业大学远光光电仪器有限公司 | Optical collimation system of infrared imaging target simulator |
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| Publication number | Publication date |
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| CN104197961A (en) | 2014-12-10 |
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