摘要
本文根据选权拟合法的一个重要性质:只要被约束的那部分参数估值无偏,其余的参数估值也无偏;该性质说明利用选权拟合进行参数估计的结果是条件无偏的。这个不同于一般正则化解的重要特性可以建立单历元伪距和载波相位双差模型,并通过实例验证了该方法的可行性。
The study is according to the quality of the fitting method of selecting parameter weights which means that the estimations of the other parameters are unbiased as long as the restrained parameters are unbiased. In this paper, this property implied that the estimation of the fitting method of parameter weights is conditional unbiased. This property which is different from that of the classical regularizations was used in GPS fast positioning for the resolution of ambiguities. Finally the calculation results of an example validated that this measurement method was feasible.
出处
《测绘科学》
CSCD
北大核心
2012年第6期32-33,42,共3页
Science of Surveying and Mapping
基金
江苏省高校自然科学研究基金(09KJB420003)
关键词
选权拟合法
单历元伪距
载波相位双差模型
fitting method by selection of parameter weights
single epoch pseudorange
carrier phase double difference model
