而最初用火箭来发射却干扰了回旋装置，而且无线电导航也缺乏其可靠性，原因是真空管在高度加速的情况下承受不了压力。
The initial launch using rockets upset the gyroscopes, and radio guidance was unreliable because vacuum tubes suffered under high acceleration.
商业飞行执照要求更灵活的掌握无线电导航及全球定位系统。
A commercial pilot's license requires you to learn how to use more sophisticated radio navigation and global positioning systems (GPS).
实现无线电导航系统的定位解算。
Then the positioning calculation can be realized for radio navigation system.
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