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以南宁市轨道交通GPS控制网测量的实际工程作业为背景,首先对电离层延迟基本模型的建立进行了论述,然后结合南宁市区域大气电离层活动的特点,利用电离层延迟模型和精密数据处理软件对南宁市区域电离层延迟数据进行了解算,并通过与电离层现报数据进行比较,分析了南宁市轨道交通GPS控制测量短周期内各个测站的电离层延迟变化规律以及市轨道交通GPS控制网测量的影响。
Taking the actual engineering work of GPS control network of Nanning Rail Transit as the background, the establishment of basic ionospheric delay model is firstly discussed. Then based on the characteristics of atmospheric ionosphere activity in Nanning, the ionospheric delay model and precision data processing The software solved the data of ionospheric delay in Nanning city and compared with the present ionospheric data to analyze the variation law of ionospheric delay of each station in the short cycle of GPS measurement of Nanning Metro Transit. Effect of control network measurement.