The workstation will remain active as long as the user is present, but will securely lock when the user physically steps away, usually one meter or less from the sonardetector.
只要用户是目前该工作站将保持活跃，但将安全锁，当用户物理几步之遥，通常一米，从声纳探测器。
2
The coherent quadrature detector is one of the key technologies for providing high quality quadrature signal for digital signal processing in radar, sonar, communication and other systems.