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问题:精密的电离层和对流层模型到底能不能加速PPP收敛?
理解:
PPP收敛过程属于PPP前期,PPP前期影响收敛误差主要来源于伪距(3m误差),当前对流层估计模型误差在0.1-0.3m左右的常偏差(2小时)。对流层误差相对于伪距误差较小,对收敛影响不大。当然把对流层改正到cm或者mm级别有助于PPP收敛(快2分钟,乃至5分钟),这种提高并不会有很大的应用意义。能够提高10min以上才能有较大的意义。
前期伪距精度的提高才是关键。假如伪距是cm或者mm级别,那么PPP收俩就会很快了。或者知道精度较高的参数也可以极大加快收敛速度。
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问题:精密的电离层和对流层模型到底能不能加速PPP收敛?
理解:
PPP收敛过程属于PPP前期,PPP前期影响收敛误差主要来源于伪距(3m误差),当前对流层估计模型误差在0.1-0.3m左右的常偏差(2小时)。对流层误差相对于伪距误差较小,对收敛影响不大。当然把对流层改正到cm或者mm级别有助于PPP收敛(快2分钟,乃至5分钟),这种提高并不会有很大的应用意义。能够提高10min以上才能有较大的意义。
前期伪距精度的提高才是关键。假如伪距是cm或者mm级别,那么PPP收俩就会很快了。或者知道精度较高的参数也可以极大加快收敛速度。
The text was updated successfully, but these errors were encountered: