Several usual models for troposphere delay and ionosphere delay are discussed and their influences to different time transfer methods are analyzed.
本文讨论了几种常用的对流层延迟和电离层延迟模型，分析了它们对各种时间比对方法的影响。
Atmosphere Refraction, Troposphere Delay, Ionosphere Delay, Local Atmosphere Mode, Atmosphere Predictive Mode, Corrective Grid of Electron Content.
大气折射，对流层延迟，电离层延迟，局部大气模式，大气预报模式，电子含量格网改正。
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.
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。
Ionosphere delivering delay error is one of the main errors in the GPS measuring.
电离层传输延迟误差是GPS测量中主要误差之一。
For the single frequency GPS user, the time delay in ionosphere is important mistake.
对于单频GPS接收用户，电离层时延是重要的测距误差。
For the single frequency GPS user, the time delay in ionosphere is important mistake.
对于单频GPS接收用户，电离层时延是重要的测距误差。
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