摘要
为了模拟出不同时刻覆盖我国内陆区域的气象数据,基于网格法建立了气象数据模型,并在网格点上分别建立了静态的均值模型和动态的日变化函数模型;从多角度对仿真得到的气象参数与实测数据进行了比较分析,说明了模型的精度情况及其适用范围和适用条件。仿真结果表明,利用该模型模拟的我国绝大部分区域的气象数据接近于实测值,即使是在模型精度相对较低的西藏地区,也可以进一步提高对流层延迟改正计算的精度。因此可为对流层延迟改正模型提供更好地气象数据支持,并最终为提高我国新一代卫星导航精度的应用研究服务。
A model of the meteorological data was established with the grid method,in which the static mean model and dynamic daily variation function model were established separately on grids,for simulating meteorological data of our country.The accuracy of the model from various sides of the data analysis was given,and the application scope and application conditions of the model were proposed.The simulation results showed that meteorological data calculated from the model of most area of our country were close to the measured and even in Tibet in which the model precision was lower, the accuracy of the tropospheric delay correction was im~ proved using the model. Meteorological parameters calculated from the model were more comfortable for the tropospheric delay correction, and the model was able to be served for application research in which the accuracy of the Compass satellite navigation need be improved.
出处
《测绘科学技术学报》
北大核心
2011年第1期10-13,18,共5页
Journal of Geomatics Science and Technology
基金
中国博士后基金资助项目(20090451558)
关键词
卫星导航
对流层延迟改正
网格法
气象参数
数据拟合
satellite navigation tropospheric delay correction grid method meteorological parameters data fitting
