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.
建立了双频载波相位观测模型，并将其进行无电离层延迟化简，用最小二乘原理推导了天顶湿延迟的估值公式。
The dual-frequency carrier phase observation equation is built and ionosphere-free predigested, the estimate formula of zenith wet delay is deduced with least square method.
通过对算例的分析，提出需要解决的问题：整周模糊度、实时钟差和天顶湿延迟的估计方法。
After the examples are analyzed, there are problems which need to be solved such as ambiguity, real-time clock bias error and the estimate method of zenith wet delay.
然后进行天顶湿延迟至可降水量的转换，结合现场的气象资料进行对比分析。
After that wet zenith delay is calculated into PWV, and field meteorologic data are combined to analyzing.
然后进行天顶湿延迟至可降水量的转换，结合现场的气象资料进行对比分析。
After that wet zenith delay is calculated into PWV, and field meteorologic data are combined to analyzing.
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