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    Why does Yunnan tunnel personnel vehicle positioning system not use GPS?
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Why does Yunnan tunnel personnel vehicle positioning system not use GPS?
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云南隧道人员车辆定位系统不同于多数地方的一个情况在于。

云南etzn恩田智能

云南隧道人员定位系统的建设前提是基于云南这种山多水多，地质植被情况复杂的情况下的。

云南隧道定位系统，在云南较特别的地质条件下，情况更为特殊恶劣，无线电信号传输衰减遇上地级磁场的可能性更高，GPS信号覆盖遇上山体厚等问题不能覆盖整个洞体和隧道的情况更多。

因此云南隧道人员车辆定位系统中，准确说，是一切隧道定位系统中，都不能采用GPS。


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