最小二乘水位拟合模型的参数时变规律研究  

Temporal Variation Law of Parameters of Least Square Fitting Model

作　　者：许军[1] 刘雁春[1] 暴景阳[1,2] 唐岩[1] 

机构地区：[1]大连舰艇学院海测工程系,大连市解放路667号116018 [2]国家海洋局第一海洋研究所,青岛市仙霞岭路6号266061

出　　处：《武汉大学学报（信息科学版）》2010年第12期1418-1421,1426,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(40671161;40801189);国家863计划资助项目(2009AA12Z202);中国博士后科学基金资助项目(20080430547)

摘　　要：从最小二乘拟合法的模型与天文潮位的调和表达式出发,推导了模型参数(潮位比较参数)的时变与同步时长、会合周期的关系,揭示了模型参数的时变规律。仿真实验与实例验证了理论分析的正确性。The relationships of the temporal variation of the model parameters to the synchronous time length and the synodic period are educed from the least square fitting model and the harmonic expressions.The law of the temporal variation of the model parameters has been revealed.It can be expressed as the followings.When the synchronous time length is shorter than the synodic period,the variations of the model parameters are dominated by the corresponding synodic periods.But when the synchronous time length is longer than the synodic period,the contribution of the minor tidal constituents is cleared.At last,the simulation and gauges results prove its correctness.

关 键 词：最小二乘拟合模型 时变 水位改正 

分 类 号：P229.3[天文地球—大地测量学与测量工程]