区域天顶对流层延迟时空变化特性及其建模研究

Space-time variation characteristics and model of regional zenith tropospheric delay

介绍几种常用的全球对流层延迟改正模型和几种区域对流层延迟模型的建立方法,再利用美国密歇根州的8个测站天顶对流层延迟数据对天顶对流层延迟进行研究,得出天顶对流层延迟在时间尺度及空间尺度上的变化规律,与经度和纬度相关性一般,与高程强相关。通过美国密歇根州的4个测站数据分别计算3种区域对流层延迟模型,得出各个模型的精度,并比较它们的优劣,结论是一次线性插值模型是三者中精度最高的模型。

This paper introduces several commonly-used global troposphere delay correction models and the methods of several regional tropospheric delay models. The eight station data of zenith tropospheric delay from Michigan are studied, with a conclusion that the zenith tropospheric delay in the time scale and the change regularity of spatial scales, correlate less with latitude and longitude than the elevation. The four station data from Michigan are calculated respectively on three regional tropospheric delay models. The precision of each model is obtained and compared with its advantages and disadvantages, the conclusion is that a linear interpolation model is the highest of the three precision models.