The wave band in each kind of long-distance range ground communication or the radar work, can not apply.

该波段在各种远距离地面通讯或雷达工作中，均不能应用。

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This capability is critical in an urban environment or on rugged terrain where there are barriers to ground communication.

这种能力在有沟通障碍的城市环境或崎岖地形中至关重要。

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When it is on the ground it can also be connected to a ground communication network which can be quickly disconnected.

位于地面时，它也能与地面通信网接通，还能迅速断开。

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And yesterday, in an attempt to claw back ground from Verizon Communication's joint wireless venture with Vodafone and Sprint Nextel, Cingular yesterday launched BroadbandConnect--its own high-speed wireless Internet service--in 16 markets.

FORBES: Magazine Article

Satellite-based data links will improve communication between pilots and ground controllers, cutting out about 40% of voice communication over the radio.

ECONOMIST: Clearing the skies | The

The Americans are trying to use e-mail for routine ground-to-air communication, freeing voice channels and lightening the load for controllers.

ECONOMIST: A jam at 32,000 feet