Army, U.S. Coast Guard, Federal Aviation Administration, National Aeronautics and Space Administration (NASA), U.S. Department of the Interior, and U.S. Department of Transportation.[184] 参考译文:FCC分配给GPS L1使用的频谱范围为1559至1610兆赫兹,而由Lightsquared拥有的卫星对地使用的频谱为移动...