Rubidium atomic clock is used for the timereferencesignal in the system, by which the user can get the positioning information without sending any signal.
该系统用高稳定度铷钟作为时间基准信号，实现了无源导航定位功能。
2
Two main issues were investigated: a) the identification time for road input condition; b) the selection of referencesignal on which the control gain are tuned.
主要对路面输入变化的估计时间和用以决定控制增益变化的系统输出信号的选择进行了研究。
3
The synchronization signal provides each of the plurality of devices a timereference to synchronize the data rate.