摘要
以我国GPS广域差分系统(WAAS)电离层误差改正问题为背景,利用分布在不同纬度上的8个GPS台站2000年2日到60日连续59天的观测数据,评估了典型的GPS TEC硬件偏差求解方法的精度和有效性。结果表明,采用同样的求解方法,处理磁暴期间以及磁纬较低台站的数据得出的结果的稳定性明显下降。因此,在求解 GPS TEC硬件偏差值时,审慎选择所利用的现测数据和方法是十分必要的。
In this paper, a typical method for estimating GPS TEC hardware biases is evaluated and tested by using 8 GPS observation stations' data. It is found that the stability of the result given by the same method differs significantly with the latitudes of the stations. And, the results show great jumps in the periods of ionospheric storms. Thus, the validity of the method is discussed and it is concluded that cautions must be taken in selecting data when some GPS TEC hardware biases estimating method be applied to Chinese Wide Area Augmentation System (WAAS).
出处
《电波科学学报》
EI
CSCD
2003年第4期472-476,共5页
Chinese Journal of Radio Science
