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长春光学精密机械与物... [3]
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会议论文 [3]
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2011 [2]
2010 [1]
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A vertex tracking technique based on airborne opticalequipment (EI CONFERENCE)
会议论文
2011 International Conference on Electronics and Optoelectronics, ICEOE 2011, July 29, 2011 - July 31, 2011, Dalian, China
Li Q.
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浏览/下载:12/0
  |  
提交时间:2013/03/25
After analyzing the advantages and disadvantages of photoelectric tracking system withhorizontal gimbal and X-Y double-axis gimbal
a vertex tracking method based on airborne photoelectricequipmenthas been presented. The method
which combines advantages of horizontal gimbal and X-Y double-axis gimbal
can effectively track target in the blind area. experiments show that the tracking method is simple
tracking accuracy is 3
meet the technical requirements. 2011 IEEE.
Design and calibration of the solar irradiance monitor (EI CONFERENCE)
会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Yang D.-J.
;
Fang W.
;
Ye X.
;
Wang Y.-P.
;
Gong C.-H.
;
Zhang G.-W.
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浏览/下载:18/0
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提交时间:2013/03/25
The solar irradiance monitor (SIM)
with the design accuracy of 5
used to monitor the secular changes of the total solar irradiance on FY-3 satellite
takes the sun-scanning measurement method on-orbit. Compared to the sun-tracking measurement method
this method simplifies the structure and cuts the cost
but the measuring accuracy is affected by the sun-synchronous orbit
sunlight incidence angle and the installing angle of the SIM in the satellite. Through the ground calibration experiment
studies on the affection of different sunlight incidence angles to the measurement accuracy. First
by the satellite tool kit (STK) simulation software
simulates the orbital parameters of the sun-synchronous satellite
and calculates the Sun ascension and declination at any time. By the orbit coordinate transformation matrix gets the components of the Sun vectors to the axes of the satellite
and base on the components designs the field of view and the installing angles of the SIM. Then
designs and completes the calibration experiment to calibrate the affection of the incidence angles. Selecting 11 different angles between the sunlight and the satellite X-axis
measures the total solar irradiance by the SIM at each angle
and compares to the irradiances of the SIAR reference radiometers
and gets the coefficient curves of the three channels of the SIM. Finally
by the quadratic fitting
gets the correction equations on the incidence angles: R 1=5.7110-52 -2.45310 -3+1.0302
R2=2.8410-5-1. 96510-3+1.0314 and R3 =1.7210 -52-4.18410-4+0.9946. The equations will aimprove the on-orbit measurement accuracy of the solar irradiance
and are very important to the on-orbit data processing after the satellite launched. 2011 SPIE.
Research of error correction of LEO satellite orbit prediction for vehicle-borne tracking and position device (EI CONFERENCE)
会议论文
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Zhang P.-L.
;
Guo L.-H.
;
Wang J.-J.
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浏览/下载:20/0
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提交时间:2013/03/25
Vehicle-borne tracking and position device is used to track LEO satellite. Because of the absence of the target which might be caused by cloud or zenith blind zone
the forecasting data will be used to acquire the target. While orbit prediction has serious errors
the target is always missed. Meanwhile
in its application to the vehicle-borne tracking and position device
due to the base of instability in the tracking process
it will result in significant difference between predicting data and tracking data
so the target will be not tracked rapidly. We applied tracking data to predict satellite orbits by improving Laplace method
and then corrected the error between Predicted data and actual measured data by interpolation method of Lagrange which improves the accuracy of prediction values. The testing data shows the accuracy of predicted data ranging from 3' to 10" for both azimuth and elevation when extrapolated satellite orbit to 7 seconds time. 2010 IEEE.
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