摘要
研究发现多核函数法具有如下特点:1)在GPS时序资料滤波中很容易完成不同频段信息的提取与分离;2)缺失数据不太严重的情况下插值简单、精确;3)具有可解析性,参数及滤波值等精度评定严密;4)计算结果稳定,矩阵不易产生病态;5)计算简便、省时。结合GPS时序资料的处理,推荐出较为适用的多核函数,并指出了使用中应注意的问题。
Through testing and studying on the technique of multi-kernel function,which is a new numerical-approximation technique proposed in recent years,it is found that this method has the characteristics as follows：1）It is easy to accomplish the extraction and separation of data of various frequency band during the filtering of GPS time series.2）It is simple and accurate to complete the interpolation when the continuous lack of data is not very badly.3）This method owns analyticity,and the accurate evaluation of parameters and filtering values is rigorous;4）The computing result is stable,and it is not easy to produce ill-conditioned matrix.5）The computing is simple and costs short time.Through some examples of data processing of GPS time series,the suitable multi-kernel function is recommended,and the problems needing attention are pointed out during concrete applications.
出处
《大地测量与地球动力学》
CSCD
北大核心
2010年第4期137-141,共5页
Journal of Geodesy and Geodynamics
基金
"十一五"国家科技支撑课题(2006BAC01B03-01-01)
中国地震局"强化华北地区强震监视跟踪项目"
关键词
GPS
时间序列
多核函数法
滤波
精度评定
GPS
time series
method of multi-kernel funtion
filtering
precision evaluation
