用GPS测定TEC的硬件偏差估计方法及其计算结果分析

The Method of Hardware Bias and Results in Estimation of Ionospheric TEC from GPS Measurements

利用全球定位系统(GPS)测定电子浓度总含量(TEC),必须考虑GPS卫星和GPS接收机的本底的影响(即硬件延迟、频偏).本文利用两参数的时空演变模型,讨论了GPS本底变化的稳定性问题.结果表明GPS系统仪器的本底变化是稳定的.

For determining the ionospheric total electron content with the Global Positioning System(GPS),the instrumental biases in GPS satellites and receivers must be removed.With a twoparameter polynomial expression,the stability of variation in biases of GPS is discussed.The results show that the variation in biases of GPS is stable (under optimal conditions).