摘要
针对捷联惯组历次测试数据小样本的特点,提出将随机加权法与最大熵法结合应用于捷联惯组历次测试数据的验前分布研究。在总体分布参数形式已知的情况下,根据已有的先验信息,采用随机加权最大熵法获得捷联惯组历次测试数据总体参数的验前分布。结合当前样本信息,利用贝叶斯方法给出捷联惯组历次测试数据的验后分布,揭示捷联惯组历次测试数据的统计特性,减少小样本情况下的统计分析误差。
Aiming at the small sample features of strapdown inertial measurement unit （SIMU） successive test data,the random weighting method and maximum entropy method are used to get the prior distribution of population parameter of successive test data of SIMU with prior information,when the distribution form of population parameter is known.The Bayesian method is adopted to determine the posterior distribution with the prior information and current information,and the statistical characteristic of SIMU successive test data are revealed and the errors of statistical analysis in the case of small samples are reduced.
出处
《航天控制》
CSCD
北大核心
2014年第1期40-43,48,共5页
Aerospace Control
关键词
捷联惯组
随机加权法
最大熵法
历次测试数据
验前分布
小样本
SIMU
Random weighting method
Maximum entropy method
Successive test data
Prior distribution
Small sample
