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    , and can work in high dynamic and weak signals enviroment. Its outputs include the C/A pseudrange, L1 carrier phase, L2 carrier phase and the L2 ionospheric delays.
    要求接收机可以工作于高动态、弱信号的环境下,实现GPS 的C/A 码伪距、L1 载波相位、L2 载波相位以及电离层时延的跟踪输出,为后续的应用提供基础。
    The performance and characteristic of the receiver NTSCGPS-2 are as follows:(1)It can measure the ionospheric delay in real time via dual-frequency observation;
    NTSCGPS-2具有如下性能特点:(1)采用双频观测,可实测电离层时延;
    AN IMPROVED GRID-BASED CORRECTION ALGORITHMS FOR THE IONOSPHERIC DELAY IN WAAS
    改进的WAAS电离层时延网格修正算法
    Ionospheric Time Delay Corrections for GPS Time Transfer
    GPS共视时间比对中的电离层时延改正问题
    AN IMPROVED GRID-BASED CORRECTION ALGORITHMS FOR SPARSELY OBSERVATION STATION REGION IN WAAS
    观测站稀疏地区的WAAS电离层时延网格修正算法
    Determing Ionospheric Delay with Two-way Satellite Dual-frequency Observation
    通过卫星双向双频观测对电离层时延的测定
    Errors, such as ionospheric delay variations, satellite ephemeric errors and the shape uncertainty of the earth (the geoid) can be largly compensated by using differential technology.
    诸如星历误差、电离层时延变化和地球模型不准等误差,通过应用差分技术可以大部分消除。
    To improve the algorithm of the correction in differential GPS,this paper presents a simple and vivid ionospheric model on the basis of the contours of monthly average ionospheric time delay,and analyses the positioning error introduced only by the ionospheric delay in the conventional GPS and the position differential GPS.
    为了改进差分GPS的校正算法,本文在月平均电离层时延等值图的基础上,建立了一个简单而又逼真的电离层模型,并分析了普通GPS和位置差分GPS仅电离层单一因素引入的定位误差。
 

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