摘要
首先介绍了三种对流层误差改正模型,然后把模型改正值作为先验值,将天顶延迟的剩余误差作为待定参数,分别用卡尔曼滤波和最小二乘两种估计方法计算对流层的残余量;实验证明Saastamoinen模型优于后两种模型,并利用实测气象参数计算对流层延迟,结果表明标准模型与实测气象参数对静态精密单点定位中对流层延迟量的计算结果影响不大。
Firstly,this paper expatiates on the three tropospheric delay models,and then taking the model corrections as a priori values and taking the residual zenith delay as the undetermined parameter,the troposphere residue is calculated respectively using the Kalman filter method and least squares estimation method;the experiment indicates that Saastamoinen model is superior to the latter two models,using eteorological parameters to calculate the tropospheric delay,the result shows that the standard model with the measured meteorological parameters has little effect on the the calculation of the amount of tropospheric delay.
出处
《海洋测绘》
2011年第6期12-15,共4页
Hydrographic Surveying and Charting
基金
国家海洋局海底科学重点实验室开放基金(KLSG1002)
国家863项目(2006AA06A202
2009AA121405)
关键词
精密单点定位
对流层延迟
参数估计
映射函数
precise point positioning
tropospheric delay
parameter estimation
mapping function
