CN209656068U - A kind of calibrating installation of near-infrared star simulator - Google Patents
A kind of calibrating installation of near-infrared star simulator Download PDFInfo
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- CN209656068U CN209656068U CN201822229301.8U CN201822229301U CN209656068U CN 209656068 U CN209656068 U CN 209656068U CN 201822229301 U CN201822229301 U CN 201822229301U CN 209656068 U CN209656068 U CN 209656068U
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- infrared
- star
- theodolite
- star simulator
- calibrating installation
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Abstract
The utility model provides a kind of calibrating installation of near-infrared star simulator, including near-infrared theodolite, data processing and display & control system, near-infrared theodolite is used to aim at near-infrared star simulator and measures azimuth value, pitching angle value and the asterism gray value of image of simulation star；Data processing and display & control system are used to carry out motion control to near-infrared theodolite, the measurement data of acquisition near-infrared theodolite is analyzed and processed and shows, the calibration result that angular distance between magnitude and star is calculated is carried out to measurement data, and carries out storage and display processing.The utility model can carry out accurate alignment to existing near-infrared star simulator, guarantee the accurate and reliable of when measuring stellar equipment transmission of quantity value, accurate detection and evaluation are carried out to the homing capability of stellar equipment, it is ensured that provide high-precision navigation information for respective carrier.
Description
Technical field
The utility model relates to measurement and calibration technical fields, and in particular to a kind of calibrating installation of near-infrared star simulator.
Background technique
Star simulator is essential instrument in stellar equipment calibration detection, passes through indoor optics or photoelectricity means
Realize that angular distance is the most important performance indicator of star simulator between magnitude and star, before use to the accurate simulation of infinity fixed star
It must accurate calibration.
Traditional star simulator work generallys use faint illuminometer calibration magnitude, using high-precision in visible light wave range
Theodolite calibrates angular distance between star.In recent years, as near-infrared surveys the fast development of star technology, star simulator is also by visible light wave range
Near infrared band is expanded to, since faint illuminometer and theodolite are not used near infrared band, uses traditional means
Near-infrared star simulator can not be calibrated.
Summary of the invention
The purpose of the utility model is to provide a kind of calibrating installations of near-infrared star simulator, to solve current near-infrared
The problem of star simulator can not be calibrated.
In order to achieve the above object, the utility model adopts the technical scheme that
A kind of calibrating installation of near-infrared star simulator, including near-infrared theodolite, data processing and display & control system, it is close red
Outer theodolite is used to aim at near-infrared star simulator and measures azimuth value, pitching angle value and the asterism image grayscale of simulation star
Value；Data processing and display & control system are used to carry out motion control to near-infrared theodolite, acquire the measurement number of near-infrared theodolite
According to being analyzed and processed and showing, the calibration result that angular distance between magnitude and star is calculated is carried out to measurement data, and deposited
Storage and display processing.
Near-infrared theodolite includes near-infrared starlight survey meter, precision angle and servo-system, levelling mechanism, described close red
Extraterrestrial optical detection instrument is for being aimed at, being detected and being imaged to the simulation star of near-infrared star simulator and measure asterism image
Gray value, precision angle and servo-system include orientation group, pitching group, and near-infrared starlight survey meter is fixed on by connecting bracket
The center of the pitching group.
Near-infrared starlight survey meter includes near-infrared optical system, near infrared camera, sighting device, near-infrared optical system with
It is connected between near infrared camera using standard C-mount interface, sighting device is fixed on the upper surface of near-infrared optical system, aims at
The optical axis of device and the optical axis keeping parallelism of near-infrared optical system.
Near-infrared optical system uses Cassegrain's formula optical system of fixed-focus, and effective Receiver aperture is not less than 100mm, coke
Away from not less than 1000mm, transmitance be not less than 0.75.
Near infrared camera uses InGaAs planar array detector, and 0.9-1.7 μm of spectral response range, quantum effect efficiency is not small
In 70%.
Precision angle and servo-system use U-T structure type, for carrying and controlling the near-infrared starlight survey meter.
Pitching group is fixed in orientation group by connecting flange, and orientation group and pitching group are leaned against using pairs of angular contact bearing
The shafting structure form of back support, orientation group and pitching group are driven by torque motor and are rotated, and use symmetrical double readings
Several Circular gratings measure azimuth and pitch angle, and orientation group realizes 360 ° of unlimited rotaries of azimuth direction using conducting slip ring.
Levelling mechanism includes that bottom plate, 3 foot nuts and spirit level, levelling mechanism are fixed under orientation group by connecting flange
End face, by adjusting 3 foot nuts, observation spirit level realizes leveling.
The utility model has the following beneficial effects: the near-infrared starlight survey meter of the utility model, using heavy caliber, long-focus
With the near-infrared optical system of high transmittance, and high sensitivity, low noise, high-resolution near infrared camera, realize pair
The high-acruracy survey and calibration of near-infrared magnitude, calibration accuracy are better than 0.2 magnitude；The precision angle and servo of the utility model
System, the overall structure type for using pairs of angular contact bearing to support back-to-back using U-T structure type, shafting, and utilize double
The advanced senser element such as reading head Circular gratings, torque motor, conducting slip ring and technology are realized between angular distance near-infrared star
High-acruracy survey and calibration, calibration accuracy are better than 2 rads；It is accurate that the utility model can carry out existing near-infrared star simulator
Calibration guarantees accurate and reliable, the homing capability progress to stellar equipment of the transmission of quantity value when measuring stellar equipment
Accurate detection and evaluation, it is ensured that high-precision navigation information is provided for respective carrier, with important military significance and well
Economic results in society.
Detailed description of the invention
Fig. 1 is the calibrating installation composition figure of the near-infrared star simulator of the utility model；
Fig. 2 is the front view of the near-infrared theodolite of the utility model；
Fig. 3 is the side view of the near-infrared theodolite of the utility model；
Fig. 4, Fig. 5 are the schematic diagrames of the calibration near-infrared star simulator of the utility model.
Specific embodiment
Referring to Fig. 1, near-infrared star simulator calibrating installation provided by the embodiment of the utility model, including a near-infrared warp
Latitude instrument obtains the survey of angular distance between the magnitude and star of near-infrared simulation star for near-infrared star simulator to be aimed at and measured
Measure data；One data processing and display & control system acquire near-infrared theodolite for carrying out motion control to near-infrared theodolite
Measurement data be analyzed and processed and show, the calibration result that angular distance between magnitude and star is calculated is carried out to measurement data,
And carry out storage and display processing.
- Fig. 3 referring to fig. 2, near-infrared theodolite include near-infrared starlight survey meter 1, precision angle and servo-system 2 and adjust
Flattening mechanism 3；Near-infrared starlight survey meter 1 obtains near-infrared for near-infrared star simulator to be aimed at, detected and is imaged
The asterism image of star is simulated, it includes near-infrared optical system 1.1, near infrared camera 1.2, sighting device 1.3；Precision angle with watch
Dress system 2 is for carrying and controlling near-infrared starlight survey meter 1, it is made to aim at near-infrared star simulator and measure simulation star
Azimuth value and pitching angle value, it includes orientation group 2.1, pitching group 2.2；Levelling mechanism 3 is used for the leveling of near-infrared theodolite,
Including 3.3,3 foot nuts 3.2 of bottom plate and spirit level 3.1.
Near-infrared starlight survey meter 1 is fixed in the pitching group 2.2 of precision angle and servo-system 2 by connecting bracket
Centre, optical axis are vertical with the rotating shaft of pitching group 2.2.
Precision angle and servo-system 2 use U-T structure type, and pitching group 2.2 is fixed on the peace of 2.1 upper surface of orientation group
It fills on flange, pitching group 2.2 is orthogonal with the rotating shaft of orientation group 2.1.
Levelling mechanism 3 is fixed on 2.1 lower end surface of orientation group by connecting flange, by adjusting 3 foot nuts 3.2, observation
Spirit level 3.1 realizes leveling.
Near-infrared optical system 1.1 uses Cassegrain's formula optical system of fixed-focus, and bore is sufficiently large to guarantee to obtain
Sufficient signal light, focal length long enough are sufficiently high to reduce to signal light to guarantee higher spatial resolution, system transmitance
Decaying.
Near infrared camera 1.2 uses spectral response range for 0.9-1.7 μm of high sensitivity, low noise, high-resolution
InGaAs planar array detector is connect between near-infrared optical system 1.1 using standard C-mount interface, near infrared camera 1.2
Detector target surface seat near-infrared optical system 1.1 position of focal plane, and with the orientation group of precision angle and servo-system 2
Rotating shaft is coplanar.
Sighting device 1.3 is fixed on the upper surface of near-infrared optical system 1.1, optical axis and near-infrared optical system 1.1
Optical axis keeping parallelism.
Orientation group 2.1 is laid out using the shafting of the back-to-back supporting way of pairs of angular contact bearing, and shafting uses torque motor
Driving method, to efficiently use space and reduce volume；Orientation group 2.1 realizes 360 ° of azimuth direction unlimited rotations using conducting slip ring
Turn；Orientation group 2.1 measures azimuth value using symmetrical double-reading head Circular gratings, to improve measurement accuracy.
Pitching group 2.2 is laid out using the shafting of the back-to-back supporting way of two angular contact bearings, and two pairs of bearings, which pass through, to be repaired
It cuts spacer ring and elastic pressing ring is pre-tightened, shafting uses torque motor driving method；The pitching shafting transverse bearing of pitching group 2.2
Inner ring and pitch axis, transverse bearing outer ring and bearing block are all made of interference fit, to eliminate bearing and pitch axis and bearing block
Fit clearance；Pitching group 2.2 measures pitching angle value using symmetrical double-reading head Circular gratings, to improve measurement accuracy；It bows
- 10 °~+100 ° of shafting revolution range for facing upward group 2.2, pitching group 2.2 is provided with mechanical position limitation and electric limiting anticollision device, collision-prevention device, really
Protect calibrating installation operational safety.
- Fig. 5 referring to fig. 4, the utility model embodiment are additionally provided using above-mentioned calibrating installation to near-infrared star simulator
Magnitude and star between angular distance calibration method, comprising the following steps:
Step 1: nearly infrared thodolite is placed on mounting device, it is correct connect near-infrared theodolite and data processing with
Display & control system；
Step 2: 3 foot nuts 3.2 of regulating near-infrared theodolite, observe the bubble in spirit level 3.1, in being in
Show that near-infrared theodolite has leveled when heart position；
Step 3: manipulating the rotation of near-infrared theodolite by data processing and display & control system, looking first at sighting device 1.3 makes
It is directed at the 1st simulation star in the near-infrared star simulator being calibrated, and then observes and shows on data processing and display & control system
The simulation star asterism image, continue through data processing and display & control system manipulation near-infrared theodolite rotation, when asterism figure
Image position stops operating when the image display centre position of data processing and display & control system；
Step 4: reading the magnitude value Mv of the simulation star by data processing and display & control system1, azimuth value α1And pitching
Angle value β1；
Step 5: repeating Step 3: step 4, obtains the magnitude value Mv of other simulation stars2...Mvn, azimuth value α2...
αnWith pitching angle value β2...βn；
Step 6: azimuth is calculated as follows to obtain between the 1st simulation star and the star of n-th simulation star away from value:
α1-n=| α1-αn|
Step 7: pitch angle is calculated as follows to obtain between the 1st simulation star and the star of n-th simulation star away from value:
β1-n=| β1-βn|。
The utility model uses the near-infrared optical system of heavy caliber, long-focus and high transmittance, and highly sensitive, low
Noise, high-resolution near infrared camera, realize high-acruracy survey and calibration to near-infrared magnitude, and calibration accuracy is better than
0.2 magnitude；The precision angle and servo-system of the utility model, it is overall that pairs of corner connection is used using U-T structure type, shafting
Contact bearing leans against the structure type of back support, and utilizes the advanced sensing such as double-reading head Circular gratings, torque motor, conducting slip ring
Device and technology are realized between the high-acruracy survey and calibration of angular distance near-infrared star, and calibration accuracy is better than 2 rads；This is practical
New Energy carries out accurate alignment to existing near-infrared star simulator, guarantees the standard of the transmission of quantity value when measuring stellar equipment
It is really reliable, accurate detection and evaluation are carried out to the homing capability of stellar equipment, it is ensured that provide high-precision for respective carrier
Navigation information, have important military significance and good economic results in society.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art the variation that can readily occur in or is replaced in the range of the utility model discloses
It changes, should all cover within the protection scope of the present utility model.Therefore, the protection scope of the utility model should be wanted with the right
Subject to the protection scope asked.
Claims (8)
1. a kind of calibrating installation of near-infrared star simulator, which is characterized in that including near-infrared theodolite, data processing and aobvious control
System, near-infrared theodolite are used to aim at near-infrared star simulator and measure azimuth value, pitching angle value and the star of simulation star
Point image gray value；Data processing and display & control system are used to carry out motion control to near-infrared theodolite, acquire near-infrared longitude and latitude
The measurement data of instrument is analyzed and processed and shows, the calibration knot that angular distance between magnitude and star is calculated is carried out to measurement data
Fruit, and carry out storage and display processing.
2. a kind of calibrating installation of near-infrared star simulator according to claim 1, which is characterized in that near-infrared theodolite
Including near-infrared starlight survey meter, precision angle and servo-system, levelling mechanism, the near-infrared starlight survey meter is used for close
The simulation star of infrared star simulator is aimed at, detected and is imaged and measured asterism gray value of image, precision angle with watch
Dress system includes orientation group, pitching group, and near-infrared starlight survey meter is fixed on the center of the pitching group by connecting bracket.
3. a kind of calibrating installation of near-infrared star simulator according to claim 2, which is characterized in that near-infrared starlight is visited
Surveying instrument includes near-infrared optical system, near infrared camera, sighting device, using mark between near-infrared optical system and near infrared camera
Quasi- C-mount interface connection, sighting device are fixed on the upper surface of near-infrared optical system, the optical axis and near-infrared optical of sighting device
The optical axis keeping parallelism of system.
4. a kind of calibrating installation of near-infrared star simulator according to claim 3, which is characterized in that near-infrared optical system
System uses Cassegrain's formula optical system of fixed-focus, and effective Receiver aperture is not less than 100mm, focal length not less than 1000mm, transmission
Rate is not less than 0.75.
5. a kind of calibrating installation of near-infrared star simulator according to claim 3, which is characterized in that near infrared camera is adopted
With InGaAs planar array detector, 0.9-1.7 μm of spectral response range, quantum effect efficiency are not less than 70%.
6. a kind of calibrating installation of near-infrared star simulator according to claim 2, which is characterized in that precision angle with watch
Dress system uses U-T structure type, for carrying and controlling the near-infrared starlight survey meter.
7. a kind of calibrating installation of near-infrared star simulator according to claim 2, which is characterized in that pitching group passes through company
Acting flange is fixed in orientation group, the shafting structure shape that orientation group and pitching group use pairs of angular contact bearing to support back-to-back
Formula, orientation group and pitching group are driven by torque motor and are rotated, and use the symmetrical double-reading head Circular gratings side of measuring
Parallactic angle and pitch angle, orientation group realize 360 ° of unlimited rotaries of azimuth direction using conducting slip ring.
8. a kind of calibrating installation of near-infrared star simulator according to claim 2, which is characterized in that levelling mechanism includes
Bottom plate, 3 foot nuts and spirit level, levelling mechanism are fixed on orientation group lower end surface by connecting flange, by adjusting 3 foot spiral shells
Mother, observation spirit level realize leveling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822229301.8U CN209656068U (en) | 2018-12-27 | 2018-12-27 | A kind of calibrating installation of near-infrared star simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822229301.8U CN209656068U (en) | 2018-12-27 | 2018-12-27 | A kind of calibrating installation of near-infrared star simulator |
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| CN209656068U true CN209656068U (en) | 2019-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252029A (en) * | 2021-06-04 | 2021-08-13 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Astronomical navigation attitude transfer method based on optical gyroscope measurement information |
-
2018
- 2018-12-27 CN CN201822229301.8U patent/CN209656068U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252029A (en) * | 2021-06-04 | 2021-08-13 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Astronomical navigation attitude transfer method based on optical gyroscope measurement information |
| CN113252029B (en) * | 2021-06-04 | 2021-10-22 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Astronomical navigation attitude transfer method based on optical gyroscope measurement information |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191119 Termination date: 20211227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |