格网模型 meaning in Chinese
grid model
Examples
- A improved progressive mesh algorithm
一种渐进格网模型的改进算法 - 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。