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长春光学精密机械与物... [1]
遥感与数字地球研究所 [1]
武汉大学 [1]
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期刊论文 [2]
会议论文 [1]
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2015 [2]
2007 [1]
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High-Precision Attitude Post-Processing and Initial Verification for the ZY-3 Satellite
期刊论文
REMOTE SENSING, 2015, 卷号: 7, 期号: 1, 页码: 195-210
作者:
Tang, Xinming
;
Xie, Junfeng
;
Wang, Xiao
;
Jiang, Wanshou
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浏览/下载:67/0
  |  
提交时间:2016/04/20
attitude accuracy
star tracker/gyro
post-processing
geometric accuracy
High-Precision Attitude Post-Processing and Initial Verification for the ZY-3 Satellite
期刊论文
REMOTE SENSING, 2015, 卷号: 7, 期号: 1
作者:
Tang, Xinming
;
Xie, Junfeng
;
Wang, Xiao
;
Jiang, Wanshou
收藏
  |  
浏览/下载:1/0
  |  
提交时间:2019/12/05
attitude accuracy
star tracker/gyro
post-processing
geometric accuracy
Application of CMOS APS star tracker with large FOV in attitude and angular velocity determination (EI CONFERENCE)
会议论文
Advanced Sensor Systems and Applications III, November 12, 2007 - November 14, 2007, Beijing, China
Lu D.
;
Guang J.
;
Shaoju W.
;
Tao C.
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浏览/下载:21/0
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提交时间:2013/03/25
The paper deals with the spacecraft attitude determination problem using a new kind of star tracker with large FOV based on CMOS APS. Star tracker has been developed since 1970s and proved to be the most accurate sensor ever used in the spacecraft attitude determination systems. But the traditional CCD star tracker also has some disadvantages
such as small FOV
high power consumption
low sample rate and low working angular rate limit which prevent the use of CCD star tracker in attitude large angle maneuvering process. The new kind of star tracker based on CMOS APS has no such disadvantages and is more applicable on modern low-cost agile small satellites. Its higher sample rate and working angular rate limit over traditional CCD star tracker make it more adapt for spacecraft angular velocity determination. Because of the large FOV of the star tracker
the mathematical model of traditional CCD star tracker with a small FOV is not appropriate. So a new mathematical model was quoted to fit the star tracker with a large FOV. An alternative adaptive algorithm was also introduced in the paper. It can help the EKF algorithm work lacking of accurate covariance of the observation noise. An optimal estimation algorithm was used to estimate the angular velocity directly from the star tracker measurements. Mathematic simulation results indicate the CMOS APS star tracker can give accurate attitude information and estimated angular rate. The method can be used as the chief attitude determination system design of low-cost satellite without gyros
or be used as a backup strategy in the event of gyro failures to enhance the reliability of the attitude determination system.
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