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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2014, Vol. 35 ›› Issue (8): 2251-2260.doi: 10.7527/S1000-6893.2014.0026

• Electronics and Control • Previous Articles     Next Articles

Relative Motion Estimation of Non-cooperative Spacecraft Based on Adaptive CKF

YU Han1, WEI Xiqing2, SONG Shenmin1, LIU Ming1   

  1. 1. Center for Control Theory and Guidance Technology, Harbin Institute of Technology, Harbin 150001, China;
    2. Shanghai Electro-Mechanical Engineering Institute, Shanghai 201109, China
  • Received:2013-10-25 Revised:2014-03-20 Online:2014-08-25 Published:2014-04-04
  • Supported by:

    National Natural Science Foundation of China (61174037);National Basic Research Program of China (2012CB821205)

Abstract:

A relative state estimation method is proposed based on stereo vision for non-cooperative satellite with no communication and information about structure. Since the error of clohessy wiltshire (CW) model can not be neglected when camera does not coincide with the center of mass of spacecraft, a general kinematic coupling which is appropriate for both eccentric orbit and circular orbit is used to describe the relationship between rotation and translation dynamics. Adaptive cubature Kalman filter combing Sage-Husa noise statistic estimator is introduced for nonlinear filtering problem with time-varying noise. Simulation results show that the method can be able to adapt the time-varying noise and its precision for relative motion estimation is higher.

Key words: relative motion, stereo vision, clohessy wiltshire equations, cubature Kalman filter, adaptive filtering algorithm

CLC Number: