摘要
在序贯平差自适应因子取值范围确定的情况下,以均方误差作为评判未知参数解优劣的标准,利用谱分解的方法求该范围内最佳的自适应因子值,并给出了相应的计算步骤和公式推导,为了说明该方法的正确性和合理性,将它与方差分量估计法进行计算和比较。结果证明利用该方法求解出的自适应因子值不仅使均方误差达到最小,而且使求解后得到的结果具有一定的实际意义。
With definite range of adaptive factor in the real-time sequential adjustment, the mean square error is used as a criterion to judge whether the result is good or bad.Then a method of calculating the adaptive factor by decompounding spectrum is proposed and the formula is deduced.In order to illuminate the correctness and rationality, a contrast between this method and the approach of robust estimation principle is presented.It is shown by the calculation that the value of the adaptive factor makes the mean square error least, and the results subsequently by the way have the actual meanings.
出处
《测绘科学》
CSCD
北大核心
2008年第1期48-50,共3页
Science of Surveying and Mapping
关键词
谱分解
均方误差
自适应因子
decompounding spectrum
mean square error
adaptive factor
