卫星向GPS发射信号频率是:
A.L1(1783.74MHZ)L2(1575.42MHZ) B.L1(1783.74MHZ)L2(1227.60MHZ) C.L1(1575.42MHZ)L2(1227.60MHZ) D.L1(1574MHZ)L2(1854MHZ)正确答案C
卫星向GPS发射信号频率是:
A.L1(1783.74MHZ)L2(1575.42MHZ) B.L1(1783.74MHZ)L2(1227.60MHZ) C.L1(1575.42MHZ)L2(1227.60MHZ) D.L1(1574MHZ)L2(1854MHZ)正确答案C