Systems Engineering and Electronics ›› 2020, Vol. 42 ›› Issue (3): 680-685.doi: 10.3969/j.issn.1001-506X.2020.03.024

Previous Articles     Next Articles

Orthogonal transformed fifth-order cubature Kalman filter for navigation

Kanghui HE(), Chaoyang DONG()   

  1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2019-09-05 Online:2020-03-01 Published:2020-02-28
  • Supported by:
    航空科学基金(2016ZA51011)

Abstract:

In view of the problem that the high-order cubature Kalman filter has large high-order sampling error in high-dimension nonlinear systems, an orthogonal transformed fifth-order cubature Kalman filter (OT5-CKF) is proposed. Based on the orthogonality of the trigonometric function, the original cubature point is subjected to the appropriate volume transformation and brought into the Kalman filter model. The new cubature point can well avoid the high-order sampling error of high-dimension systems. Finally, the unmanned aerial vehicle integrated navigation system is used as the application background. The third-order CKF, fifth-order CKF and OT5-CKF are compared and analyzed. The results show that the filtering estimation accuracy of OT5-CKF is higher than others under the same observation conditions.

Key words: nonlinear filters, Kalman filters, orthogonal transformation, sampling error, integrated navigation

CLC Number: 

[an error occurred while processing this directive]