卫星定位值间的内插最初用的是推算航行法。
Interpolation between satellite positions was initially carried out by dead - reckoning procedures.
提出了一种基于直线和单特征点的视觉推算定位方法。
A new visual dead reckoning positioning method is presented for mobile robot, which is based on lines and single feature points.
将GPS定位技术和航位推算（DR）技术结合起来，可以很好地解决这一问题。
This problem can be solved by the combination of GPS positioning technology and DR technology.
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