CN105953803A - Method for measuring deviation between digital sun sensor measuring coordinate system and prism coordinate system - Google Patents
Method for measuring deviation between digital sun sensor measuring coordinate system and prism coordinate system Download PDFInfo
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- CN105953803A CN105953803A CN201610259691.6A CN201610259691A CN105953803A CN 105953803 A CN105953803 A CN 105953803A CN 201610259691 A CN201610259691 A CN 201610259691A CN 105953803 A CN105953803 A CN 105953803A
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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
- G01C21/24—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for cosmonautical navigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
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Abstract
The invention provides a method for measuring a deviation between a digital sun sensor measuring coordinate system and a prism coordinate system. The method includes installing a digital sun sensor on a high precision three-axle table, using a solar simulator for simulating solar ray vector to irradiate the digital sun sensor, using a theodolite for measuring the deviation of Z-axis in the prism coordinate system of the digital sun sensor relative to the Z-axis of the measuring coordinate system, and using two theodolites for measuring the deviation of X-axis in the prism coordinate system of the digital sun sensor relative to the X-axis of the measuring coordinate system and the deviation of Y-axis in the prism coordinate system of the digital sun sensor relative to the Y-axis of the measuring coordinate system. The measuring coordinate system of a detector optical filter and the prism coordinate system are connected by means of light measuring mode, and the measuring of the coordinate system relationship is completed on the ground. The measured deviation between the coordinate systems can be used for arranging and installing the satellite directly, and can be provided for the attitude and orbit control system to amend the inflight measuring coordinate system directly. The method has high reliability, high credibility, and high enforceability.
Description
Technical field
The present invention relates to light mechanical and electrical integration and ray machine Electric Measurement Technology, particularly relate to a kind of measurement number
The measurement coordinate system of word formula sun sensor and the method for prism coordinate system deviation.
Background technology
Digital sun sensor be used to measure the spacecraft such as solar vector and satellite body axle between angle
Instrument.Digital sun sensor can be that spacecraft carries out the sun with or without judgement in given visual field,
During global attitude acquisition, keep satellite Direct to the sun (inertial space orientation), it is ensured that energy supply on star, also
Can be used to attitude measurement sensor for other higher precision (such as star sensor, ultraviolet sensors, infrared
Earth sensor etc.) visual field provide monitoring, can be used for the payload of horizontal solar telescope one class in addition
Accurate pointing control, star sensor and the protection control of infrared horizon solar incident ray with solar array
System, generation switch and timing signal, determine spacecraft phase reference during spin, measure
The attitude datas such as the spin rotating speed of aircraft and angle.
During the use of digital sun sensor, because its prism coordinate system is inclined with prism coordinate system
Difference relation the indefinite certainty of measurement deviation that result in relative to spacecraft two axle attitude, need by
Rail re-scale correction could eliminate deviation, caused in-orbit data deviation greatly, in-orbit correction complexity etc. one
Series of problems.
Summary of the invention
The present invention provides the measurement coordinate system of a kind of digital sun sensor to survey with the deviation of prism coordinate system
Metering method, by the way of light is measured, by the measurement coordinate system of detector optical filter and prism coordinate system
Associating, complete coordinate system relation on ground and measure, measuring the deviation between coordinate system can be direct
There is provided whole star dress star to use, and be supplied to Attitude and orbit control system and directly carry out inflight measurement coordinate system correction, can
High, with a high credibility by property, exploitativeness is high.
In order to achieve the above object, the present invention provides a kind of digital sun sensor to measure coordinate system and rib
Mirror coordinate system bias measurement method, comprises the steps of
Step S1, simulation digital sun sensor dress star mode, be installed to digital sun sensor
In high precision on three-axle table, make turntable installed surface vertical with solar simulator optical axis；
Step S2, use solar simulator simulated solar ray vectors irradiate digital sun sensor, adjust
Whole high accuracy three-axle table so that solar simulator ray vectors the is inswept whole visual field of digital sun sensor,
Find the zero of the measurement coordinate system of digital sun sensor and measure X-axis and the Y of coordinate system
Axle；
Step S3, use a transit survey digital sun sensor prism coordinate system Z axis relative
In the deviation measuring coordinate system Z axis；
Prism coordinate system X of step S4, simultaneously two transit survey digital sun sensors of use
Axle is relative to the deviation of measurement coordinate system X-axis, and the prism coordinate system Y-axis of digital sun sensor
Relative to the deviation measuring coordinate system Y-axis.
Described step S3 specifically comprises the steps of
Step S3.1, make the Z axis of the measurement coordinate system of solar simulator optical axis and digital sun sensor
In the same direction, on the basis of finding the measurement coordinate system X-axis of digital sun sensor, by theodolite from
Collimated ray is got on the prism of digital sun sensor so that the measurement crosshair of theodolite and rib
The X-axis of mirror, Z axis are orthogonal；
Step S3.2, adjustment high accuracy three-axle table so that digital sun sensor output sunray
Vector becomes a horizontal linear in the hot spot gray scale center-of-mass coordinate measured in coordinate system；
Step S3.3, again the crosshair of measuring of theodolite is made to get to the prism of digital sun sensor
On, read measured deviation data, i.e. digital sun sensor prism coordinate system ZPrismRelative to digital
Sun sensor measures coordinate system ZDetectorDeviation.
Described step S4 specifically comprises the steps of
Step S4.1, layout theodolite, the auto-collimation light making the first theodolite is sensitive with digital solar
Detector optical filter on device is vertical, makes the auto-collimation light of the second theodolite can get to digital solar
On the prism of sensor；
Step S4.2, the first theodolite and the second theodolite are carried out taking aim at, with the number of degrees of the first theodolite
On the basis of, the number of degrees of the second theodolite are set, then read measured deviation data by the second theodolite, i.e.
Digital sun sensor prism coordinate system XPrismCoordinate system X is measured relative to digital sun sensorVisit Survey deviceDeviation, and digital sun sensor prism coordinate system YPrismRelative to digital sun sensor
Measure coordinate system YDetectorDeviation.
In described step S4.2, measure digital sun sensor prism coordinate system XPrismRelative to number
Word formula sun sensor measures coordinate system XDetectorThe process of deviation specifically comprise the steps of
Step S4.2.a1, on the basis of finding the measurement coordinate system X-axis of digital sun sensor, will
The measurement crosshair of the first theodolite is orthogonal with the X-axis measuring coordinate system and Y-axis；
Step S4.2.a2, by the first theodolite and the second theodolite to taking aim at, with the number of degrees of the first theodolite be
The number of degrees of the second theodolite are set to the number of degrees of the first theodolite by benchmark；
Step S4.2.a3, the crosshair of measuring of the second theodolite is made to get to the rib of digital sun sensor
On mirror, read measured deviation data, i.e. digital sun sensor prism coordinate system XPrismRelative to numeral
Formula sun sensor measures coordinate system XDetectorDeviation.
In described step S4.2, measure digital sun sensor prism coordinate system YPrismRelative to number
Word formula sun sensor measures coordinate system YDetectorThe process of deviation specifically comprise the steps of
Step S4.2.b1, on the basis of finding the measurement coordinate system Y-axis of digital sun sensor,
By orthogonal with the X-axis measuring coordinate system and Y-axis for the measurement crosshair of the first theodolite；
Step S4.2.b2, by the first theodolite and the second theodolite to taking aim at, with the number of degrees of the first theodolite be
The number of degrees of the second theodolite are set to the number of degrees of the first theodolite by benchmark；
Step S4.2.b3, the crosshair of measuring of the second theodolite is made to get to the rib of digital sun sensor
On mirror, read measured deviation data, i.e. digital sun sensor prism coordinate system YPrismRelative to numeral
Formula sun sensor measures coordinate system YDetectorDeviation.
The present invention is by the way of light is measured, by the measurement coordinate system of detector optical filter and prism coordinate
System associates, and completes coordinate system relation on ground and measures, and measuring the deviation between coordinate system can be straight
Connect offer whole star dress star to use, and be supplied to Attitude and orbit control system and directly carry out inflight measurement coordinate system correction,
Reliability is high, with a high credibility, exploitativeness is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of digital sun sensor.
Fig. 2 is measurement coordinate system and the prism coordinate system of a kind of digital sun sensor that the present invention provides
The flow chart of bias measurement method.
Fig. 3 is that the prism coordinate system Z axis measuring digital sun sensor in the present invention is sat relative to measuring
The schematic diagram of the deviation of mark system Z axis.
Fig. 4 is the imaging schematic diagram of digital sun sensor in the present invention.
Fig. 5 is that the prism coordinate system X-axis measuring digital sun sensor in the present invention is sat relative to measuring
The schematic diagram of the deviation of mark system X-axis.
Fig. 6 is that the prism coordinate system Y-axis measuring digital sun sensor in the present invention is sat relative to measuring
The schematic diagram of the deviation of mark system Y-axis.
Fig. 7 is the prism coordinate system of digital sun sensor and the relation schematic diagram measuring coordinate system.
Detailed description of the invention
Below according to Fig. 1～Fig. 7, illustrate presently preferred embodiments of the present invention.As it is shown in figure 1, it is digital
Formula sun sensor comprises: housing and the prism being arranged on housing and detector optical filter.Wherein,
ODetectorFor measuring the initial point of coordinate system, XDetectorFor measuring the X-axis of coordinate system, YDetectorFor measuring coordinate system
Y-axis, ZDetectorFor measuring the Z axis of coordinate system, OPrismFor the initial point of prism coordinate system, XPrismFor prism
The X-axis of coordinate system, YPrismFor the Y-axis of prism coordinate system, ZPrismFor the Z axis of prism coordinate system, measure
Coordinate system is pointed to the most consistent with 3 axles of prism coordinate system, ZDetectorDetector for digital sun sensor
Optical axis, measurement coordinate system and the prism coordinate system of digital sun sensor are satisfied by right-hand rule.Numeral
Formula sun sensor is installed on the face of spacecraft or turntable for being parallel to XDetectorODetectorYDetectorThe bottom surface in face.
The detector optical filter of digital sun sensor itself has the effect of reflection light, has physics
On can measure and can measure (digital solar on (digital sun sensor prism coordinate system) and electronics
Sensor detector coordinates system), by introducing theodolite, they are combined, that finds out between them is inclined
Difference.As in figure 2 it is shown, the present invention uses high accuracy three-axle table and theodolite to digital sun sensor
The deviation of measurement coordinate system and prism coordinate system measure, specifically comprise the steps of
Step S1, simulation digital sun sensor dress star mode, be installed to digital sun sensor
In high precision on three-axle table, make turntable installed surface (i.e. detector optical filter vertical with solar simulator optical axis
XDetectorODetectorYDetectorFace is vertical with solar simulator optical axis)；
Step S2, use solar simulator simulated solar ray vectors irradiate digital sun sensor, adjust
Whole high accuracy three-axle table so that solar simulator ray vectors the is inswept whole visual field of digital sun sensor,
Find the zero of the measurement coordinate system of digital sun sensor and measure X-axis and the Y of coordinate system
Axle；
Digital sun sensor image forming job, output sunray vector is at the hot spot measured in coordinate system
Gray scale center-of-mass coordinate information；
Turn in view of the precision of digital sun sensor itself, solar simulator optical axis and high accuracy three axles
Intercept between platform need to be better than digital sun sensor and measure 1 order of magnitude of coordinate system；
Step S3, use a transit survey digital sun sensor prism coordinate system Z axis relative
In the deviation measuring coordinate system Z axis；
Prism coordinate system X of step S4, simultaneously two transit survey digital sun sensors of use
Axle is relative to the deviation of measurement coordinate system X-axis, and the prism coordinate system Y-axis of digital sun sensor
Relative to the deviation measuring coordinate system Y-axis.
Described step S3 specifically comprises the steps of
Step S3.1, make the Z axis of the measurement coordinate system of solar simulator optical axis and digital sun sensor
In the same direction, (i.e. digital solar on the basis of finding the measurement coordinate system X-axis of digital sun sensor
Sensor output Y coordinate becomes a horizontal line), the auto-collimation light of theodolite is got to digital solar quick
On the prism of sensor so that theodolite to measure crosshair and the X-axis of prism, Z axis orthogonal；
Step S3.2, adjustment high accuracy three-axle table so that digital sun sensor output sunray
Vector becomes a horizontal linear in the hot spot gray scale center-of-mass coordinate measured in coordinate system；
High accuracy three-axle table housing is utilized to rotate so that digital sun sensor is at solar simulation
Under the irradiation of device light, its photosurface becomes string picture, adjust high accuracy three-axle table inside casing (around too
The rotating shaft of sun simulator optical axis) so that these row are as becoming a horizontal linear, and gray scale center-of-mass coordinate deviation is less than
0.1 pixel；
Step S3.3, again the crosshair of measuring of theodolite is made to get to the prism of digital sun sensor
On, read measured deviation data, i.e. digital sun sensor prism coordinate system ZPrismRelative to digital
Sun sensor measures coordinate system ZDetectorDeviation.
Described step S4 specifically comprises the steps of
Step S4.1, layout theodolite, the auto-collimation light making the first theodolite is sensitive with digital solar
Detector optical filter on device is vertical, makes the auto-collimation light of the second theodolite can get to digital solar
On the prism of sensor；
Step S4.2, the first theodolite and the second theodolite are carried out taking aim at, with the number of degrees of the first theodolite
On the basis of, the number of degrees of the second theodolite are set, then read measured deviation data by the second theodolite, i.e.
Digital sun sensor prism coordinate system XPrismCoordinate system X is measured relative to digital sun sensorVisit Survey deviceDeviation, and digital sun sensor prism coordinate system YPrismRelative to digital sun sensor
Measure coordinate system YDetectorDeviation.
In described step S4.2, measure digital sun sensor prism coordinate system XPrismRelative to number
Word formula sun sensor measures coordinate system XDetectorThe process of deviation specifically comprise the steps of
Step S4.2.a1, on the basis of finding the measurement coordinate system X-axis of digital sun sensor, will
The measurement crosshair of the first theodolite is orthogonal with the X-axis measuring coordinate system and Y-axis；
Step S4.2.a2, by the first theodolite and the second theodolite to taking aim at, with the number of degrees of the first theodolite be
The number of degrees of the second theodolite are set to the number of degrees of the first theodolite by benchmark；
Step S4.2.a3, the crosshair of measuring of the second theodolite is made to get to the rib of digital sun sensor
On mirror, read measured deviation data, i.e. digital sun sensor prism coordinate system XPrismRelative to numeral
Formula sun sensor measures coordinate system XDetectorDeviation.
In described step S4.2, measure digital sun sensor prism coordinate system YPrismRelative to number
Word formula sun sensor measures coordinate system YDetectorThe process of deviation specifically comprise the steps of
Step S4.2.b1, on the basis of finding the measurement coordinate system Y-axis of digital sun sensor,
By orthogonal with the X-axis measuring coordinate system and Y-axis for the measurement crosshair of the first theodolite；
Step S4.2.b2, by the first theodolite and the second theodolite to taking aim at, with the number of degrees of the first theodolite be
The number of degrees of the second theodolite are set to the number of degrees of the first theodolite by benchmark；
Step S4.2.b3, the crosshair of measuring of the second theodolite is made to get to the rib of digital sun sensor
On mirror, read measured deviation data, i.e. digital sun sensor prism coordinate system YPrismRelative to numeral
Formula sun sensor measures coordinate system YDetectorDeviation.
As it is shown on figure 3, digital sun sensor to be arranged on during test the turntable of high accuracy three-axle table
On installed surface, its intermediate station installed surface is vertical with solar simulator optical axis.Adjust theodolite 1 so that warp
2 direction of principal axis measuring crosshair of latitude instrument 1 are orthogonal with the X-axis of prism and Z axis 2 direction of principal axis.Too
Under the irradiation of sun simulator, digital sun sensor output facula gray scale center-of-mass coordinate.Turn by adjusting
The platform axis of rolling, rotating table yaw direction (turntable housing), adjust the turntable axis of rolling so that digital too
Sun sensor output coordinate become a horizontal line, coordinate beat scope in 0.1 pixel till.Such as Fig. 4
Shown in, digital sun sensor certainty of measurement is higher, and 0.1 pixel characterizes about 0.00125 degree inclined
Difference, this deviation has met use requirement, in error tolerance interval.
The measurement crosshair reusing theodolite 1 is got on digital sun sensor prism, reads
Data, i.e. digital sun sensor prism coordinate system ZPrismMeasure relative to digital sun sensor and sit
Mark system ZDetectorDeviation.
As it is shown in figure 5, finding digital sun sensor XDetectorOn the basis of axle, the most digital too
Sun sensor output Y coordinate becomes a horizontal line.Along turntable yaw direction rotating table 90 degree, use two
Platform theodolite is tested.First theodolite 1 is adjusted and digital sun sensor optical filter 2 axle (X
Axle and Y-axis) orthogonal.Adjust theodolite 2 so that it is measured crosshair and gets to digital solar sensitivity
On device prism.Theodolite 1, theodolite 2 are carried out taking aim at so that the measurement spider of two theodolites
Silk is being completely superposed on theodolite eyepiece taking aim at respectively.On the basis of the number of degrees of theodolite 1, arrange through
The value of latitude instrument 2.Finally, theodolite 2 is rotated to initial position, the now crosshair of theodolite 2
Will again get on digital sun sensor prism, read the measurement data of theodolite 2, these data
It is digital sun sensor prism coordinate system XPrismCoordinate system is measured relative to digital sun sensor
XDetectorDeviation.
As shown in Figure 6, digital sun sensor Y is being foundDetectorOn the basis of axle, the most digital too
Sun sensor output X-coordinate becomes a horizontal line.Along turntable yaw direction rotating table 90 degree, make equally
Test with two theodolites.First theodolite 1 is adjusted and digital sun sensor optical filter 2
Axle (X-axis and Y-axis) is orthogonal.Adjust theodolite 2 so that its measure crosshair get to digital too
On sun sensor prism.Theodolite 1, theodolite 2 are carried out taking aim at so that two transit surveys ten
Word cross hair is being completely superposed on theodolite eyepiece taking aim at respectively.On the basis of the number of degrees of theodolite 1, if
Put the value of theodolite 2.Finally, theodolite two is rotated to initial position, the now cross of theodolite 2
Cross hair will be got on digital sun sensor prism again, reads the measurement data of theodolite 2, this
Data are digital sun sensor prism coordinate system YPrismMeasure relative to digital sun sensor and sit
Mark system YDetectorDeviation.
The following is the prism coordinate system of a test digital sun sensor relative to measuring the inclined of coordinate system
The specific embodiment of difference:
1, as shown in Figure 3 (top view), test digital sun sensor prism relative to digital too
The Z-direction rotational variations situation of sun sensor detector:
1) by digital sun sensor X-axis down, theodolite 1 is just to digital sun sensor
Measure the Y direction of coordinate system；
2) rotating table yaw axis, revolves turnback by digital sun sensor around X-axis, adjusts and turns
The platform axis of rolling makes solar simulator light form the straight line that Y coordinate is equal on detector optical filter surface, this
Sample ensures that the X-axis of detector optical filter is levelling with theodolite 1, with theodolite 1 to prism polishing, surveys
Digital sun sensor prism relative to digital sun sensor detector optical filter about the z axis
4 jiaos points 33 rads are rotated clockwise, i.e. ψ=-4'33 ".
2 as it is shown in figure 5, test the prisms X relative to detector optical filter to turning with two theodolites
Dynamic deviation situation:
1) it is that 90 ° of angles are placed by two theodolites；
2) by theodolite 1 alignment detector optical filter, it is right then theodolite 1 and theodolite 2 instrument to be taken aim at mutually
Standard, by theodolite 2 to prism polishing, records digital sun sensor prism and filters relative to detector
Sheet have rotated 10 rads counterclockwise around X-axis, i.e.
3, as shown in Figure 6, turn relative to the Y-direction of detector filter plate with two theodolite test prisms
Dynamic deviation situation:
1) digital sun sensor is rotated clockwise 90 ° along Z-direction；
2) theodolite 1 is directed at optical filter, then theodolite 1 is taken aim at mutually with theodolite 2 and be directed at, then will
Theodolite 2, to prism polishing, records prism and has turned clockwise 27 relative to detector filter plate around Y-axis
Rad, i.e. θ=-27 ".
Test result, definition prism coordinate system is XPrismYPrismZPrism, it is known that prism coordinate system and detector
The relation of coordinate system (measurement coordinate system) is as shown in Figure 7:
Wherein: X'Y'Z' represents and turns about the Z axis coordinate system after ψ angle；X " Y " Z " represents and is turning about the z axis
Based on after dynamic, turn about the X axis the coordinate system after φ angle；θ represents the angle rotated around Y-axis；φ
Represent the angle rotated around X-axis；ψ represents the angle rotated about the z axis.
The prism coordinate of digital sun sensor is then gone to by the measurement coordinate system of digital sun sensor
The transition matrix of system is:
The present invention utilizes the character of the imaging of digital sun sensor own, by the way of light is measured,
The measurement coordinate system of its detector optical filter being associated with prism coordinate system, physical measurement mode is reliable
Property high, with a high credibility, exploitativeness is high, completes the measurement of coordinate system relation on the ground, give numeral
Formula sun sensor dress star provides installation foundation, and the clear and definite digital sun sensor that characterizes measures seat
Mark system and the relation of its prism coordinate system, when using in-orbit, can to whole star coordinate modification, for digital too
Sun sensor coordinate modification in-orbit provides to be supported.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should understanding
It is not considered as limitation of the present invention to the description above.Read above-mentioned those skilled in the art
After content, multiple amendment and replacement for the present invention all will be apparent from.Therefore, the present invention
Protection domain should be limited to the appended claims.
Claims (5)
1. a digital sun sensor measures coordinate system and prism coordinate system bias measurement method, it is characterised in that comprise the steps of
Step S1, simulation digital sun sensor dress star mode, be installed to digital sun sensor on high accuracy three-axle table, make turntable installed surface vertical with solar simulator optical axis；
Step S2, use solar simulator simulated solar ray vectors irradiate digital sun sensor, adjust high accuracy three-axle table, make the whole visual field of the inswept digital sun sensor of solar simulator ray vectors, find the zero of the measurement coordinate system of digital sun sensor and measure X-axis and the Y-axis of coordinate system；
Step S3, use a transit survey digital sun sensor prism coordinate system Z axis relative to measure coordinate system Z axis deviation；
The prism coordinate system X-axis of step S4, simultaneously two transit survey digital sun sensors of use is relative to the deviation of measurement coordinate system X-axis, and the prism coordinate system Y-axis of digital sun sensor is relative to the deviation measuring coordinate system Y-axis.
2. digital sun sensor as claimed in claim 1 measures coordinate system and prism coordinate system bias measurement method, it is characterised in that described step S3 specifically comprises the steps of
Step S3.1, make solar simulator optical axis and digital sun sensor measurement coordinate system Z axis in the same direction, on the basis of finding the measurement coordinate system X-axis of digital sun sensor, the auto-collimation light of theodolite is got on the prism of digital sun sensor so that theodolite to measure crosshair and the X-axis of prism, Z axis orthogonal；
Step S3.2, adjustment high accuracy three-axle table so that digital sun sensor output sunray vector becomes a horizontal linear in the hot spot gray scale center-of-mass coordinate measured in coordinate system；
Step S3.3, again make theodolite measure crosshair get on the prism of digital sun sensor, read measured deviation data, i.e. digital sun sensor prism coordinate system ZPrismCoordinate system Z is measured relative to digital sun sensorDetectorDeviation.
3. digital sun sensor as claimed in claim 2 measures coordinate system and prism coordinate system bias measurement method, it is characterised in that described step S4 specifically comprises the steps of
Step S4.1, layout theodolite, the auto-collimation light making the first theodolite is vertical with the detector optical filter on digital sun sensor, makes the auto-collimation light of the second theodolite can get on the prism of digital sun sensor；
Step S4.2, the first theodolite and the second theodolite are carried out taking aim at, on the basis of the number of degrees of the first theodolite, the number of degrees of the second theodolite are set, then read measured deviation data, i.e. digital sun sensor prism coordinate system X by the second theodolitePrismCoordinate system X is measured relative to digital sun sensorDetectorDeviation, and digital sun sensor prism coordinate system YPrismCoordinate system Y is measured relative to digital sun sensorDetectorDeviation.
4. digital sun sensor as claimed in claim 3 measures coordinate system and prism coordinate system bias measurement method, it is characterised in that in described step S4.2, measures digital sun sensor prism coordinate system XPrismCoordinate system X is measured relative to digital sun sensorDetectorThe process of deviation specifically comprise the steps of
Step S4.2.a1, on the basis of finding the measurement coordinate system X-axis of digital sun sensor, by the first theodolite to measure crosshair orthogonal with the measurement X-axis of coordinate system and Y-axis；
Step S4.2.a2, by the first theodolite and the second theodolite to taking aim at, on the basis of the number of degrees of the first theodolite, the number of degrees of the second theodolite are set to the number of degrees of the first theodolite；
Step S4.2.a3, make the second theodolite measure crosshair get on the prism of digital sun sensor, read measured deviation data, i.e. digital sun sensor prism coordinate system XPrismCoordinate system X is measured relative to digital sun sensorDetectorDeviation.
5. digital sun sensor as claimed in claim 3 measures coordinate system and prism coordinate system bias measurement method, it is characterised in that in described step S4.2, measures digital sun sensor prism coordinate system YPrismCoordinate system Y is measured relative to digital sun sensorDetectorThe process of deviation specifically comprise the steps of
Step S4.2.b1, on the basis of finding the measurement coordinate system Y-axis of digital sun sensor, by the first theodolite to measure crosshair orthogonal with the measurement X-axis of coordinate system and Y-axis；
Step S4.2.b2, by the first theodolite and the second theodolite to taking aim at, on the basis of the number of degrees of the first theodolite, the number of degrees of the second theodolite are set to the number of degrees of the first theodolite；
Step S4.2.b3, make the second theodolite measure crosshair get on the prism of digital sun sensor, read measured deviation data, i.e. digital sun sensor prism coordinate system YPrismCoordinate system Y is measured relative to digital sun sensorDetectorDeviation.
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| CN112198624A (en) * | 2020-09-22 | 2021-01-08 | 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） | Method and system for assembling and adjusting optical despin K-mirror assembly |
| CN112198624B (en) * | 2020-09-22 | 2022-08-09 | 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） | Method and system for assembling and adjusting optical despun K-mirror assembly |
| CN112598583A (en) * | 2020-11-03 | 2021-04-02 | 上海航天控制技术研究所 | Refractive index model distortion correction method |
| CN112598583B (en) * | 2020-11-03 | 2023-09-12 | 上海航天控制技术研究所 | Refractive index model distortion correction method |
| CN117387560A (en) * | 2023-12-11 | 2024-01-12 | 长光卫星技术股份有限公司 | Digital sun sensor, error calibration method and sun azimuth acquisition method |
| CN117387560B (en) * | 2023-12-11 | 2024-03-08 | 长光卫星技术股份有限公司 | Digital sun sensor, error calibration method and sun azimuth acquisition method |
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