The number of aircraft cleared to use Boeing's global positioning system( GPS)- guided Joint Direct Attack Munition( JDAM) family continues to increase.

能够使用的配备GPS全球定位系统的联合制导攻击武器的空中平台又添新丁。

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The most determined effort to develop a small, cheap guided weapon, though, is the Forward Firing Miniature Munition (F2M2, or Spike missile), from the Naval Air Weapons Station in China Lake, California.

ECONOMIST: Cheap smart weapons