Journal of Systems Engineering and Electronics ›› 2011, Vol. 33 ›› Issue (3): 712-.doi: 10.3969/j.issn.1001-506X.2011.03.48

Previous Articles    

Synthetic evaluation of missile precision based on mixed posteriors with modified weights

YAN Zhi-qiang1,2, JIANG Ying-jie1, GONG Er-ling1, XIE Hong-wei1   

  1. 1. College of Mechatronic Engineering and Automation, National University of Defense Technology,  Changsha 410073, China;
    2. Equipment Academy, The Second Artillery Force of the PLA, Beijing 100085, China
  • Online:2011-03-21 Published:2010-01-03

Abstract:

In the case of missile precision synthetic evaluation by the information of simulation test data and fly test data, for the normal distribution parameters, the informative prior is usually mixed with non informative prior, and the mixed posteriors weights can not reflect the consistency of the two sorts of data, which brings inaccurate results. In view of this, a prior sample size constrained maximum likelihood Ⅱ (SCML Ⅱ) estimation is presented, and a prior sample size constrained marginal density (SCMD) is defined. The marginal of the field sample upon non informative prior is replaced by the SCMD of the field sample, which brings the modification of weights of mixed posteriors. Finally, the estimation performance of the modified method is analyzed by an example.

[an error occurred while processing this directive]