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Analysis and correction of geometrical error-induced pointing errors of a space laser communication APT system 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF OPTOMECHATRONICS, 2021, 卷号: 15, 期号: 1
作者:  
Zhang, Furui;  Ruan, Ping;  Han, Junfeng;  Li, Yao
  |  收藏  |  浏览/下载:37/0  |  提交时间:2021/05/28
Accuracy modeling and analysis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform 期刊论文  OAI收割
MECHANISM AND MACHINE THEORY, 2018, 卷号: 130, 页码: 552-566
作者:  
Ding, Jian;  Liu, Jinguo;  Zhang, Rongpeng;  Zhang, Lu;  Hao, Guangbo
  |  收藏  |  浏览/下载:24/0  |  提交时间:2021/02/02
Accuracy modeling and analysis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform 期刊论文  OAI收割
MECHANISM AND MACHINE THEORY, 2018, 卷号: 130, 页码: 552-566
作者:  
Ding, Jian;  Liu, Jinguo;  Zhang, Rongpeng;  Zhang, Lu;  Hao, Guangbo
  |  收藏  |  浏览/下载:24/0  |  提交时间:2021/02/02
Accuracy modeling and analysis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform 期刊论文  OAI收割
Mechanism and Machine Theory, 2018, 卷号: 130, 页码: 552-566
作者:  
Hao, Guangbo;  Ding J(丁建);  Liu JG(刘金国);  Zhang RP(张荣鹏);  Zhang, Lu
  |  收藏  |  浏览/下载:32/0  |  提交时间:2018/10/08
Active pixel sensor geometrical characteristic effects on star image subdivided locating accuracy for star tracker (EI CONFERENCE) 会议论文  OAI收割
ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Liu J.;  Liu J.;  Liu J.;  Li J.;  Li J.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
Active pixel sensor (APS) star tracker becomes an investigated hotspot because of its technical advantages. And centroid algorithm is a subpixel method proper to star position calculation because of its high accuracy and simplicity. When centroid algorithm is applied on APS star tracker  APS pixel geometrical characteristics might effect on star image position accuracy. Because the amplifier circuit and other function circuits inter pixel of APS take up some pixel area  the Fill Factor is less than 100%. Moreover  the active sensitive area has a certain geometrical shape  such as square  rectangle and L shape. The Fill Factor of pixel influences on star image subdivided locating accuracy when using centioid algorithm. In this paper  we have analyzed all pixel geometrical characteristics influence on the star position accuracy. From simulation experiments  we can conclude that Fill factor and pixel geometric shape influence on star position accuracy. The star locating error increased when Fill Factor decreased  and different geometrical shape of active sensitive area of pixel can make different influence on star location accuracy  the symmetrical sensitive area in x or y axis have symmetrical location error in the same axis.