通过综合比较四个或者更多卫星的传送结果，接收器能够判断出用户所在的海拔高度。

With four or more satellites in view, the receiver can determine the user's altitude.

youdao

通过综合比较四个或者更多卫星的传送结果，接收器能够判断出用户所在的海拔高度。

With four or more satellites in view, the receiver can determine the user's altitude.

youdao