...天顶延迟建模与分析 _大洋网 关键词： 天顶延迟；分层指数模型；大气折射指数；最小二乘拟合 [gap=826]Keywords： Zenith delay; layered exponential model; atmospheric refractive index; least square fitting ..
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All kinds of error correction formulas are discussed, such as the earth tides correction, antenna phase center offset and relativistic effects. Scaling factor of the tropospheric zenith delay orientation is added in the observation equation.
本文系统地研究了精密绝对定位的数学模型和方法，对精密星历采用了切比雪夫多项式拟合的方法计算出任意时刻的卫星位置和钟差，研究了各项误差改正公式，考虑了地球固体潮汐改正项，改进了卫星天线相位中心改正公式和相对论效应周期项改正，在参数解算中加入了对流层天顶延迟因子。
参考来源 - 精密绝对定位的研究与软件研制·2,447,543篇论文数据，部分数据来源于NoteExpress
结果显示，海潮对GPS测站有厘米级的影响，而对基线向量和天顶延迟的测定的影响大约为几毫米。
The result shows that the effects are about several centimeters for GPS stations and several millimeters for baseline vectors and the determination of zenith delay in maximum.
对基于连续运行GPS观测网络的对流层天顶延迟估算模型和参数的选择，及其对估计结果的影响进行研究。
The effects of various models and parameters in estimating the tropospheric zenith delay based on the continuous operation of GPS references network are studied.
该模型为无网外辅助站对流层延迟的解算提供了一种新的方法，可以减少网络维持的费用和GPS解算对流层天顶延迟的时间。
With the modify model of ZTD we can apply a new method for ZTD calculation of none auxiliary stations which can decrease the fee of the network and calculated time of GPS ZTD.
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