English translation for "ionospheric delay"
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- 电离层时延
Related Translations:
- Example Sentences:
| 1. | The precision of determining ionospheric delay using gps is improved based on the further research of the related models and methods
通过对有关模型和方法问题的深入研究，进一步提高了利用gps提取电离层延迟信息的精度。 | | 2. | ( 2 ) different calculating schemes are designed which are used to analyze in detail the characteristics of the effect from instrumental bias ( ib ) in gps observations on determining ionospheric delays
( 2 )设计了几种不同的计算方案，用于分析仪器偏差对确定电离层延迟的影响的特点。研究表明，仪器偏差对求解电离层延迟的影响远大于观测噪声的影响，给电离层延迟观测值带来高达数米的系统误差。 | | 3. | The experimental results show that the model can indicate the characteristic of ionospheric actions , improves further the modeling ability of local ionosphere and may be used to correct efficiently ionospheric delay of the single frequency gps uses serviced by dgps
试算结果表明，它能较好地反映电离层活动特性，提高了局部电离层延迟模拟能力，适用于dgps系统修正其服务区域内的单频gps用户的电离层延迟。 | | 4. | 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。 | | 5. | The results show that the ionosphere - weighted model or the tropospheric estimation , integrated with the partly - weigthed least squares , can improve , the success rate and the reliability of ambiguity resolution ; however , if the ionospheric delay or the tropospheric delay , which is modeled on random walk process or first - order gauss - markov process , is estimated with the kalman filter , it will reduce the success rate and the reliability of ambiguity resolution
将电离层延迟作为零均值的随机游走过程(电离层加权模型) ，将对流层延迟作为静态参数，采用非递推形式的加权最小二乘法来估计，可以提高模糊度解算的成功率和可靠性。 | | 6. | 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。 | | 7. | Second part - the main contribution and research results of this paper are focused on as follows : ( 1 ) how to use the measurements of a dual frequency gps receiver to determine the ionospheric delay correction model for single frequency gps of a local range ; ( 2 ) how to separate the instrumental biases with the ionospheric delays in gps observation ; ( 3 ) how to establish a large range grid ionosphere model and use the gps data of chinese crust movement observation network to investigate the change law of ionospheric tec of china area ; ( 4 ) how to improve the effectiveness of correcting ionospheric delays for waas ' s users under adverse conditions . ( 5 ) how to establish the basic theory and the corresponding framework of monitoring the stochastic ionospheric disturbance using gps ( 6 ) how to improve the modelling ability of ionospheric delay according to its diurnal , seasonal , annual variations based on gps ; ( 7 ) how to meet the demand of correcting the ionospheric delay of high - precision orbit determination for low - earth satellite using a single frequency gps receiver 1 extracting ( local ) ionospheric information from gps data with high - precision the factors are systematically described and analyzed which limit the precision of using gps data to extract ionospheric delays
二、具体研究工作的系统报告，主要集中在以下几方面：研究如何利用单台双频gps接收机的观测信息确定电离层延迟改正模型，为小范围的单频用户服务；研究如何实时分离gps观测中的仪器偏差与电离层延迟；研究如何建立较大区域的电离层格网模型，进而初步设想利用中国地壳运动观测网络深入研究我国领域的电离层的电子浓度变化规律；研究单频用户在不利条件下，如何更好地利用电离层延迟改正信息；研究利用gps监测随机电离层扰动的基本理论和框架方案；研究如何综合顾及电离层的周日、季节和年变化，进一步提高利用gps模拟电离层延迟的能力；研究如何实现星载单频gps低轨卫星的精密测轨中的电离层延迟改正要求。 |
- Similar Words：
- "ionospheric cross modulation" English translation, "ionospheric currents" English translation, "ionospheric d scatter meteor burst" English translation, "ionospheric data" English translation, "ionospheric defocusing" English translation, "ionospheric direct sounding" English translation, "ionospheric disturbance" English translation, "ionospheric disturbances" English translation, "ionospheric drift" English translation, "ionospheric echo" English translation
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