另外，美国陆军计划扩展无人机、地面控制器和直升机之间的链接。
In addition, the Army plans to extend efforts to link UAVs, ground controllers and helicopters.
飞行员和地面控制器之间的通信是非常重要的对航空安全。
Communications between pilots and ground controllers are extremely important to air safety.
平台是在以色列空军地面控制器的控制之下，据信已经与无人机失去联系后，它失去高度撞上一个高压线。
The platform was under the control of an Israeli Air Force ground controller, who is believed to have lost contact with the UAV after which it lost altitude and hit a high-tension cable.
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