CN113701744A - Method for realizing cone scanning star observation by utilizing reflecting mirror - Google Patents
Method for realizing cone scanning star observation by utilizing reflecting mirror Download PDFInfo
- Publication number
- CN113701744A CN113701744A CN202111002210.0A CN202111002210A CN113701744A CN 113701744 A CN113701744 A CN 113701744A CN 202111002210 A CN202111002210 A CN 202111002210A CN 113701744 A CN113701744 A CN 113701744A
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- China
- Prior art keywords
- camera
- cone scanning
- star sensor
- rotating shaft
- reflector
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 230000003068 static effect Effects 0.000 claims abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
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Classifications
-
- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/105—Scanning systems with one or more pivoting mirrors or galvano-mirrors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Automation & Control Theory (AREA)
- Optics & Photonics (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a method for realizing the viewing of a star by using a cone scanning of a reflector, relates to the field of instruments and meters and the field of astronomical navigation, and can improve the structural dynamic characteristic of a cone scanning mechanism. The content comprises the following steps: the reflector is fastened on the rotating shaft and forms a certain angle with the rotating shaft, and the camera or the star sensor static base is installed. The rotating shaft and the optical axis of the camera or the star sensor are kept coincident or parallel, and the distance between the two shafts is small enough to ensure that a reflected light scene can cover the view field of the camera or the star sensor. And the motor and other power modules drive the rotating shaft to drive the reflector to realize cone scanning, a cone scanning bus is the turning direction of the optical axis of the camera or the star sensor on the reflecting surface, and the camera or the star sensor shoots a peripheral sky area along the bus direction in the cone scanning process to acquire a starry sky image sequence. The invention is suitable for a cone scanning type camera or a star sensor, only utilizes the cone scanning ratio of the reflector to drive the whole optical system to carry out cone scanning, has smaller structural mass, and can obviously improve the structural dynamic characteristic of the cone scanning mechanism.
Description
Technical Field
The invention relates to the field of instruments and meters and the field of astronomical navigation, in particular to a cone scanning star observation implementation method by utilizing a reflector.
Background
The day star viewing and attitude determination of the star sensor are key technologies of astronomical navigation in the current atmosphere, and two technical routes of a multi-view-field star sensor device and a cone scanning type star sensor device exist at present. The multi-view field star sensor device is generally called a multi-view star sensor, and the problem of insufficient observed star quantity of the small-view field star sensor is solved by increasing the number of lenses, but the method causes the problems of large equipment volume, complex structure and circuit and the like. The cone scanning type star sensor device controls the whole optical system to rotate around the main shaft to realize cone scanning, but the whole optical system has large mass, and the vibration generated in dynamic motion can prevent the star sensor from imaging clearly. Therefore, the invention designs a method for realizing the cone scanning of the star by using the reflecting mirror, only uses the cone scanning ratio of the reflecting mirror to drive the whole optical system to carry out cone scanning, has smaller structural quality, and can obviously improve the structural dynamic characteristic of the cone scanning mechanism.
Disclosure of Invention
The invention aims to provide a method for realizing cone scanning by using a reflecting mirror, which reduces the quality of a scanning component and improves the structural dynamic characteristic of a cone scanning mechanism.
The purpose of the invention is realized by the following technical scheme: the reflector is fastened on the rotating shaft and forms a certain angle with the rotating shaft, and the camera or the star sensor static base is installed. The rotating shaft and the optical axis of the camera or the star sensor are kept coincident or parallel, and the distance between the two shafts is small enough to ensure that a reflected light scene can cover the view field of the camera or the star sensor. And the motor and other power modules drive the rotating shaft to drive the reflector to realize cone scanning, a cone scanning bus is the turning direction of the optical axis of the camera or the star sensor on the reflecting surface, and the camera or the star sensor shoots a peripheral sky area along the bus direction in the cone scanning process to acquire a starry sky image sequence.
The beneficial effects of the invention are illustrated as follows:
the invention provides a method for realizing the viewing of a star by using a cone scanning of a reflector, which is suitable for a cone scanning type camera or a star sensor, only uses the cone scanning ratio of the reflector to drive the whole optical system to carry out cone scanning, has smaller structural mass, and can obviously improve the structural dynamic characteristic of a cone scanning mechanism.
Drawings
FIG. 1 is a schematic diagram of the present invention;
fig. 2 is a schematic view of the apparatus in the preferred embodiment.
Detailed Description
The principles of the present invention are described in detail below:
the law of reflection of light refers to the fact that when light strikes an interface, the reflected light rays are at the same angle as the incident light rays.
As shown in fig. 1, an incident star 101 is obliquely projected toward a mirror 103, and a reflected star 102 enters a lens of a camera or star sensor 104. The reflector is fastened with the rotating shaft, the included angle between the reflector and the rotating shaft is constant, the rotating shaft drives the reflector to rotate, the optical axis of the camera or the star sensor is turned on the reflecting surface according to the law of reflection, and the field of view of the camera or the star sensor rotates along with the rotating shaft to realize conical scanning. The rotating shaft and the main optical axis of the star sensor are arranged in alignment, so that the reflected starlight scene can cover the view field of the optical system in the cone scanning process.
The present invention will be described in further detail with reference to preferred embodiments. The following examples are given to illustrate the present invention, but are not intended to limit the scope of the present invention.
Figure 2 is a preferred embodiment designed according to this invention. The motor 202 and the rotating shaft 203 of the preferred embodiment are installed on the upper portion of the frame structure 201, the star sensor 206 is installed on the lower portion of the frame structure 201, and the rotating shaft 203 is aligned with the main optical axis of the star sensor 206. The mirror 204 is mounted at the other end of the rotation axis 203 in a plane that makes an angle of less than 45 ° with the rotation axis. The light shield 205 may filter stray light that affects reflections.
In the preferred embodiment, the angle between the reflector 204 and the rotation axis 203 is 22.5 °, and according to the principle shown in fig. 1, the angle formed by the optical axis direction of the turn of the star sensor 206 and the main optical axis direction is 45 °. In the working state, the motor 202 drives the reflector 204 to rotate through the rotating shaft 203, and the optical axis direction of the turn of the star sensor 206 rotates along with the reflector 204 and scans along the conical surface with the half cone angle of 45 degrees.
Claims (3)
1. A method for realizing the star viewing by cone scanning by using a reflector is characterized by comprising the following steps: the reflector is fastened on the rotating shaft and forms a certain angle with the rotating shaft, and the camera or the star sensor static base is installed.
2. The cone-scan star realization method using reflectors as claimed in claim 1, wherein: the rotating shaft and the optical axis of the camera or the star sensor are kept coincident or parallel, and the distance between the two shafts is small enough to ensure that a reflected light scene can cover the view field of the camera or the star sensor.
3. The cone-scan star realization method using reflectors as claimed in claim 1, wherein: and the motor and other power modules drive the rotating shaft to drive the reflector to realize cone scanning, a cone scanning bus is the turning direction of the optical axis of the camera or the star sensor on the reflecting surface, and the camera or the star sensor shoots a peripheral sky area along the bus direction in the cone scanning process to acquire a starry sky image sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111002210.0A CN113701744A (en) | 2021-08-30 | 2021-08-30 | Method for realizing cone scanning star observation by utilizing reflecting mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111002210.0A CN113701744A (en) | 2021-08-30 | 2021-08-30 | Method for realizing cone scanning star observation by utilizing reflecting mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113701744A true CN113701744A (en) | 2021-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111002210.0A Pending CN113701744A (en) | 2021-08-30 | 2021-08-30 | Method for realizing cone scanning star observation by utilizing reflecting mirror |
Country Status (1)
| Country | Link |
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| CN (1) | CN113701744A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4740680A (en) * | 1985-10-24 | 1988-04-26 | Messerschmitt-Bolkow-Blohm Gmbh | Star sensor arrangement for a rotating satellite having two fields of view |
| US6060702A (en) * | 1997-09-22 | 2000-05-09 | Microcosm, Inc. | Low-cost light-weight star tracking telescope |
| CN101315426A (en) * | 2007-05-31 | 2008-12-03 | 株式会社其恩斯 | Photoelectric sensor |
| CN102538819A (en) * | 2011-12-08 | 2012-07-04 | 北京控制工程研究所 | Autonomous navigation semi-physical simulation test system based on biconical infrared and star sensors |
| FR3015056A1 (en) * | 2013-12-13 | 2015-06-19 | Astrium Sas | SPACE SPATIAL OBSERVATION OPTICAL SYSTEM |
| CN108344427A (en) * | 2018-02-02 | 2018-07-31 | 江苏北方湖光光电有限公司 | A kind of calibration method and calibration mechanism of the pitching speculum of star sensor |
-
2021
- 2021-08-30 CN CN202111002210.0A patent/CN113701744A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4740680A (en) * | 1985-10-24 | 1988-04-26 | Messerschmitt-Bolkow-Blohm Gmbh | Star sensor arrangement for a rotating satellite having two fields of view |
| US6060702A (en) * | 1997-09-22 | 2000-05-09 | Microcosm, Inc. | Low-cost light-weight star tracking telescope |
| CN101315426A (en) * | 2007-05-31 | 2008-12-03 | 株式会社其恩斯 | Photoelectric sensor |
| CN102538819A (en) * | 2011-12-08 | 2012-07-04 | 北京控制工程研究所 | Autonomous navigation semi-physical simulation test system based on biconical infrared and star sensors |
| FR3015056A1 (en) * | 2013-12-13 | 2015-06-19 | Astrium Sas | SPACE SPATIAL OBSERVATION OPTICAL SYSTEM |
| CN108344427A (en) * | 2018-02-02 | 2018-07-31 | 江苏北方湖光光电有限公司 | A kind of calibration method and calibration mechanism of the pitching speculum of star sensor |
Non-Patent Citations (3)
| Title |
|---|
| 刘伟;胡以华;吴永华;: "扫描式红外地球敏感器抗干扰技术研究", 红外与激光工程, no. 2, pages 358 - 361 * |
| 支政等: "锥摆扫一体化空间相机成像模式设计", 《光学精密工程》, vol. 29, no. 3, pages 536 - 546 * |
| 范宏深;王同权;佛显超;: "一种采用双视场星敏感器的飞行器姿态角快速、高精度测量方法", 宇航学报, no. 06, pages 72 - 76 * |
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Application publication date: 20211126 |