Journal of Atmospheric and Environmental Optics ›› 2013, Vol. 8 ›› Issue (3): 187-194.

• 论文 • Previous Articles     Next Articles

Precise Acquisition of ZY-3 Orbit and Attitude Parameters Based on Metadata File

LI Xiu-ju, ZHANG Li-ming, XU Wei-wei, SI Xiao-long, LI Xin, HUANG Wen-xin   

  1. (1. Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei, 230031, China; 
    2. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, China)
  • Received:2013-01-24 Revised:2013-02-25 Online:2013-05-28 Published:2013-05-17

Abstract:

The acquisition of high precision satellite orbit and attitude parameters is of great significance for the popularization and application of satellite data product. The data format, the meaning of the parameters and dimension of ZY-3 satellite metadata file (. AUX) are analyzed, and the satellite orbit and attitude parameters are fitted for any time. The analysis of the fitting accuracy shows that the ZY-3 satellite orbit is operating smoothly, by the, and the accuracy of satellite orbit fitting based on quadratic polynomial can reach meter level, and it keeps a good consistency with 5 m measurement accuracy designed by GPS on the satellite. In the imaging period, its attitude change is quite stable. This value can be used as the initial value of exterior orientation elements applied to the satellite on-orbit geometric calibration and the accurate positioning of image.

Key words: orbit parameter, attitude parameter, numerical fitting, exterior orientation elements, ZY-3 satellite

CLC Number: