【摘要】 基于GPS技术实时监测电离层变化原理,利用载波平滑伪距观测值建立区域电离层模型的方法,计算了电离层延迟量和硬件延迟,根据硬件延迟值相对稳定的特点,采取一定时段求解出硬件延迟量,对实时硬件延迟量进行预报,进而实时分离GPS信号传播路径上的垂直总电子含量VTEC.利用上海区域内的GPS网的观测数据,建立实时上海区域电离层延迟模型,监测上海区域的电离层变化.数据分析结果表明,这种方法的内符合精度优于3TECU.更多还原

【Abstract】 A method of real-time monitoring ionosphere based on GPS technology is described in this paper.The regional ionosphere model is constructed using GPS phase-smoothed pseudorange measurements.The ionosphere delay and instrumental bias are also calculated.Because the instrumental bias is stable,its value can be obtained after a period of time.Using this value,realtime instrumental bias can be forecasted.After deducted the instrumental bias from GPS signal, the real-time ionosphere information can be extracted in path of signal propagation.To validate this method,the data of Shanghai regional GPS network are used and a real-time regional ionosphere model is created.The results show the internal precision of this regional ionosphere model are better than 3TECU.更多还原