ionospheric models meaning in English
电离层模型
Examples
- The main achievements of this work include the some aspects as follows : ( 1 ) based on a simple model with constant number of parameters , which consists of a set of trigonometric series functions , a generalized ionospheric model is constructed whose parameters can be adjusted
主要包括： ( 1 )将参数固定的三角级数函数电离层模型，扩展为更适用于理论研究和实际应用的参数可调型广义形式，实现了根据电离层延迟时空变化特征，选择不同的特征参数模拟电离层延迟的影响。 - As the parts of the main contributions , the research projects focus mainly on how to improve gps surveying by reducing ionospheric delay for dual / single frequency kinematic / static users : high accuracy correction of ionospheric delay for single / dual frequency gps users on the earth and in space , china waas ionospheric modeling and the theory and method of monitoring of ionosphere using gps . the main contents of this ph . d paper consist of two parts : fisrt part - the outline of research background and the systematic introduction and summarization of the previous research results of this work
本文主要包括两方面的内容：一、研究背景的一般性描述及相关基础研究的系统总结和介绍，主要涉及：地球电离层研究意义，地球电离层探测技术与相关理论研究的内容，现代大地测量中电离层问题的由来、严重性与新课题，地球电离层的基本特性及其对电波传播的影响， gps定位的基本理论与方法，电离层延迟对gps测量的影响， gps的电离层延迟改正的基本方法，基于gps的电离层研究的基本原理与方法等。 - The experimental results show that the effect of ib is much larger than that of the noise on estimating ionospheic delay , and ib can cause ionospheric delay measurements to include systematic errors of the order of several meters . therefore , one must significantly take notice of ib and remove its negative effect , and should not casually consider ib as part of noise whenever gps data are used to fit ionospheric model or to directly calculate ionospheric delay . ( 3 ) stability of ib is studied with a refined method for separating it from ionospheric delay using multi - day gps phase - smoothed code data
算例表明，新方法通过采用平均去噪分离方法后处理相位丞于g陀的电官唇监剥及延迟改正工论与方法的研究平滑测码数据，求出仪器偏差并对需要实时处理仪器偏差的观测数据进行预报改止，直接利用观测值确定电离层延迟量，待估参数少、能消除仪器偏差的大部分影响，具有较好的精度，可作为waas及其他gps网络系统确定电离层延迟的可行的参考方案。