该平台可在近程无线电导航地面导航设备的研制中确定发射机参数和检验性能时使用。
It can be used in developing the short range radio navigation ground beacon and testing the performance of its transmitter.
完成过程：哈里森先生使用卫星导航设备，先引导气球到达距离地球表面22英里的高空，然后在相机通过降落伞返回地面时，恢复相机的照相功能。
Achievement: Mr Harrison guided the balloon to a height of 22 miles above the earth's surface and was able to recover the camera as it parachuted back down to earth using a sat-nav device.
专家认为，便携式的电子设备会发射出一些辐射，这些辐射能影响飞机用来导航以及跟地面联系的一定波长的电磁波。
Experts know that portable device emit radiation which affects those wavelengths which aircraft use for navigation and communication.
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