Design of high precision star image locating method used in star sensor technology

Author

Zhang, Shaodi ; Sun, Honghai ; Wang, Yanjie ; Jia, Xiaomeng ; Chen, Hao

Author_Institution

Grad. Dept., Chinese Acad. of Sci., Changchun, China

Volume

5

fYear

2010

fDate

24-26 Aug. 2010

Firstpage

411

Lastpage

414

Abstract

Nowadays star sensor technology used in aircraft attitude measurement has become more and more popular for its high precision, light weight, without attitude accumulation errors and other advantages. In order to enhance the accuracy of star sensor, it is critical to make efforts to promote the precision of star image locating. High precision star image locating method mentioned in this article includes two aspects. One is sub-pixel dividing algorithm used to acquire the coordinate of stars. The other one is imaging calibration method used to weaken the effect caused by imaging distortion. This method is finally realized in some type of star sensor system. Then an experiment is designed to verify the precision of the method. The result of the experiment shows that the precision of the method is 2" in the experimental environment.

Keywords

aircraft navigation; attitude measurement; calibration; image processing; star trackers; aircraft attitude measurement; high precision star image locating method; imaging calibration; imaging distortion; star sensor technology; sub-pixel dividing algorithm; Image recognition; Optical imaging; Optical sensors; Pixel; Gauss surface fitting method; imaging calibration; star sensor; sub-pixel subdivision;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer, Mechatronics, Control and Electronic Engineering (CMCE), 2010 International Conference on

Conference_Location

Changchun

Print_ISBN

978-1-4244-7957-3

Type

conf

DOI

10.1109/CMCE.2010.5609943

Filename

5609943