TY - JOUR
T1 - Simulation system of high accuracy star images based on star sensor
AU - Lu, Yan
AU - Gao, Kun
AU - Zhuang, You Wen
AU - Liu, Hong Miao
AU - Xu, Ting Fa
N1 - Publisher Copyright:
© 2015, Chinese Academy of Sciences. All right reserved.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - A star image simulation system was designed to test the performance of a star sensor on the ground for satisfying the requirement of accuracy and reliability of the start simulation. According to technical index, the fundamentals of star simulation were discussed, and then the system overall scheme was determined. The process of star map simulation method was established, and the fundamentals and implementation method of auxiliary field calibration, converting the magnitude into grayscale, coordinate transforming and star map display were described in details. The linear brightness correction and the nonlinear correction method based on measurement data were proposed to solve the problems that exist in the traditional conversion between magnitude and gray. The corresponding model was established and then was put forward the distortion correction method to solve the star positional deviation caused by distortion of the optical system. Finally, the star simulation was implemented with static and dynamic displays, and a double-screen was used to synchronize display by the thumbnail and an external monitor. The FK5 star catalogue was used in experiment, and the simulating results indicate that the system implements the simulation on the field of view of 10.5°×7.5° and star magnitude of -4.6~6 accurately, meanwhile the star location distortion error keeps within 0.017%.
AB - A star image simulation system was designed to test the performance of a star sensor on the ground for satisfying the requirement of accuracy and reliability of the start simulation. According to technical index, the fundamentals of star simulation were discussed, and then the system overall scheme was determined. The process of star map simulation method was established, and the fundamentals and implementation method of auxiliary field calibration, converting the magnitude into grayscale, coordinate transforming and star map display were described in details. The linear brightness correction and the nonlinear correction method based on measurement data were proposed to solve the problems that exist in the traditional conversion between magnitude and gray. The corresponding model was established and then was put forward the distortion correction method to solve the star positional deviation caused by distortion of the optical system. Finally, the star simulation was implemented with static and dynamic displays, and a double-screen was used to synchronize display by the thumbnail and an external monitor. The FK5 star catalogue was used in experiment, and the simulating results indicate that the system implements the simulation on the field of view of 10.5°×7.5° and star magnitude of -4.6~6 accurately, meanwhile the star location distortion error keeps within 0.017%.
KW - Coordinate transformation
KW - Distortion correction
KW - Magnitude
KW - Star image simulation
KW - Star sensor
UR - http://www.scopus.com/inward/record.url?scp=84950323691&partnerID=8YFLogxK
U2 - 10.3788/OPE.20152313.0731
DO - 10.3788/OPE.20152313.0731
M3 - Article
AN - SCOPUS:84950323691
SN - 1004-924X
VL - 23
SP - 731
EP - 738
JO - Guangxue Jingmi Gongcheng/Optics and Precision Engineering
JF - Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ER -