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卫星向机载GPS发射的信号频率是()频率。
A.L1(1783.74MHZ)和L2(1575.42MHZ)
B. L1(1783.74MHZ)和L2(1227.6MHZ)
C. L1(1575.42MHZ)和L2(1227.6MHZ)
D. L1(1754MHZ)和L2(1854MHZ)
A.L1(1783.74MHZ)和L2(1575.42MHZ)
B. L1(1783.74MHZ)和L2(1227.6MHZ)
C. L1(1575.42MHZ)和L2(1227.6MHZ)
D. L1(1754MHZ)和L2(1854MHZ)
A.L1(1783.74MHZ)和L2(1575.42MHZ)
B.L1(1783.74MHZ)和L2(1227.6MHZ)
C.L1(1575.42MHZ)和L2(1227.6MHZ)
D.L1(1754MHZ)和L2(1854MHZ)
A.1602MHz+0.5625MHz,399.968MHz
B. 1246MHz+0.43175MHz,149.988MHz
C. 1227.60MHz,1575.42MHz
D. 1948MHz,1946MHz
A.1575.42MHz、1227.60MHz
B. 399.968MHz、149.988MHz
C. 10.2千赫,13.6千赫,11.33千赫
D. 1602MHz+N×0.5625MHz,1246MHz+N×0.4375MHz
A.1602MHz+0.5625MHz,399.968MHz
B.1246MHz+0.43175MHz,149.988MHz
C.1227.60MHz,1575.42MHz
D.1948MHz,1946MHz
A.高稳定的本振频率
B.只发射1575.42MHz和1227.60MHz两种载波频率
C.只接收仰角为5°至85°的GPS卫星信号
D.A+B+C
A.高稳定的本振频率
B. 只发射1575.42MHz和1227.60MHz两种载波频率
C. 只接收仰角为5°至85°的GPS卫星信号
D. A+B+C
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