instrumental bias meaning in English
仪器偏差
Examples
- In addition , the importance of eliminating the instrumental bias during calculating the vtec is pointed out
指出在计算vtec值的过程中，消除仪器偏差的重要性。 - ( 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。 - The advantages of the new method of calculating the vtec including : ( 1 ) because the instrumental bias is considered , the vtec ' s change going with time is closer to their real change . ( 2 ) with the precision of calculated the vtec improved , the vtec can reflect the increase of the vtec resulted from the solar flare
新的求解vtec的方法具有以下优点：考虑了gps卫星和接收机的仪器偏差的影响，计算的电子总量随时间的变化更接近电离层的实际情况；提高了求解电子总量的精度，计算出的vtec值更能反映耀斑引起的电子总量的增加情况。 - According to the present status of studying the solar flare using gps , a new algorithm of processing gps data studying the solar flare is brought forward : after the instrumental bias has been determined , with the data of dual - frequency gps code and phase and navigation message , the vtec at the satellite ' s epp can be worked out
根据现在研究太阳耀斑的实际情况，提出了利用gps研究太阳耀斑的数据处理方法：利用双频观测值确定出仪器偏差后，再利用码和相位观测值，结合导航电文就可以求出电离层交叉点的沿天顶方向上的电子总量vtec值。 - 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。