An online identification algorithm of odometer's scale factor in land used strapdown inertial navigation system is put forward.

提出陆用捷联惯导系统中里程计刻度因子的在线辨识算法。

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Radio navigation makes use of wireless wave, which can be divided into land-based and space-based system according to the position of base point.

无线电导航是利用无线电电波的波速进行导航的方法，根据导航基点可分为陆基导航和空基导航。

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A mathematic model has been established in the article for the control system about the path deviation of ALV (Autonomous Land Vehicles) in order to control its tracking navigation route accurately.

为了实现自主车跟踪固定路径的精确控制，建立了自主车路径偏差控制系统的数学模型。

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The report also lauds the land-based eLoran radio navigation system as a very worthy back-up technology.

BBC: UK 'over-reliant' on GPS signals, engineers warn