TITLE:
An Approach to Star Map Simulation for Star Sensor Considering the Effect of Image Motion
AUTHORS:
Ai-Jun Li, Chao-Shan Liu, Xiao-fang Shen
KEYWORDS:
Star Sensor; Image Motion Model; Simulation of Star Map
JOURNAL NAME:
Optics and Photonics Journal,
Vol.3 No.2B,
July
18,
2013
ABSTRACT: To test high resolution and dynamic performance of star sensor, a method
of consideration image motion on Modeling the motion blur of star sensor is
proposed. Firstly, image motion geometric model based on the rotation of
Starlight vector is studied. Secondly, with the help of the normal distribution
of static star image energy model, introducing the star image motion speed,
obtaining the energy distribution function of moving stars, implementing high
dynamic simulation of star map. Finally, establishing the simulation
environment, through adjusting input parameters such as integral time, rate of
change of three attitude angle, the launch time, location, then, important
simulation data of stars observed by star sensor in orbit can quickly be
obtained, such as navigation stars information, value and direction of image motion,
intensity distribution, signal to noise ratio. This work is very important to
research and evaluate the star image motion compensation algorithm.