Product Introduction Space-time safety isolation device is used in electric power, mobile operator, data centers and other fields that have a requirement for space-time safety. It effectively isolates the navigation satellite from the timing system, ensuring that interference signals cannot be transmitted to timing devices.
Product Features (1) Compatible with existing timing equipment of power systems
(2) With higher time synchronization accuracy, time synchronization accuracy ≤30ns.
(3) Support GPS-L2 signal
(4) Output GLONASS-L1, Galileo-E1, BDS-B3I and other navigation satellite signal frequency
(5) Multiple timing modes, including NTP timing, 1PPS+TOD timing, B-code timing function
(6) Multiple time synchronization, ephemeris acquisition, and navigation satellite signal gating strategies, improving the anti-interference and independent normal operation capabilities
(7) The output power, antenna delay compensation, output signal coordinate and other parameters can be adjusted
Product Parameter
Technical index
(1) Working mode switching automaticly
Equipped with automatic switching function between synchronous hold mode and reject hold mode based on the status of the input signal. When there is no suppression or deception signal and normal in orbit navigation satellite signal is received, the synchronization hold mode is enabled. When there are suppression, deception signals or inability to receive in orbit navigation satellite signals, enable the refuse to maintain mode
(2) Real time interference monitoring and alarm
Real time monitoring of satellite navigation signals at the installation location of timing equipment, determining whether there is interference, and providing alarms when there is interference; Promptly release the alarm after the interference disappears
(3) Interference signal isolation
It can automatically isolate non safe GPS-L1 and BDS-B1 signals, ensuring the normal operation of timing equipment.
(4) Data upload and storage
With data reporting and log storage functions, it can record and report alarm status, tame status, operation status, input signal health status, output signal health status, etc
(5) Self inspection and working condition inspection
Self inspection can monitor the status of output signals, and log and alarm when the output signal is abnormal. Equipment working status inspection, capable of monitoring the health status of input signals and recording logs
(6) Command and dispatch
Capable of receiving command and scheduling commands remotely, configuring output signals, and reporting work status in real-time.
Equipped with remote settings for output signal switches (BDS-B1/GPS-L1), signal output power adjustment, antenna delay compensation adjustment, output signal coordinate adjustment, and other navigation satellite signal parameter settings.
(7) Equipped with NTP timing function
(8) Supports work scenarios in which GPS L1 and BDS B1 are subject to long-term interference. Having multiple timing and ephemeris collection strategies
a)Time service and ephemeris can be obtained through satellite signal frequency points such as BDS-B3 and GPS L2
b)Equipped with external 1PPS+TOD timing and B-code timing functions, supporting the import of external ephemeris data
c)Equipped with punctuality function and ephemeris calculation function
(9)Equipped with input and output interfaces for 1PPS and 10M signals, supporting 1PPS+TOD timing and B-code timing for external devices. The external timing device outputs 10M standard frequency or inputs 10M standard frequency for 1PPS+TOD timing and B-code timing for spatiotemporal security isolation devices
(10)Dimensions: 420mm*44mm*300mm
(11)Operating environment
a) Operating temperature: -5℃-+45℃
b) Relative humidity: 5%-95%
c) Atmospheric pressure: 70kPa-106kPa
Performance index
(1)Signal reception frequency band: GPS-L1(1575.42±1.023MHz), BDS-B1(1561.098±2.046MHz), BDS-B3I(1268.52±10.23MHz), GPS-L2(1227.60±1.023MHz
(2)Signal output frequency band: GPS-L1, BDS-B1, GLONASS-L1 (optional), Galileo E1 (optional), BDS-B3I (optional)
(3)Output power range: -125dBm--90dBm, -125-60dBm (optional)
(4)In synchronous hold mode, output signal synchronization accuracy: ≤30ns
(5)Abnormal alarm time ≤ 15s, identify signal abnormalities and give an alarm. Release the alarm for ≤ 180s. after identifying that the external output signal is normal, release the alarm
(6)Timekeeping accuracy: In the rejection maintenance mode, the output signal maintenance time and time accuracy
a)Class 1: Duration≥1h, duration accuracy is better than 500ns
b)Class 2: Duration≥2h, duration accuracy is better than 500ns
c)Class 3: Duration≥6h, duration accuracy is better than 500ns
(7)Interference signal isolation capability
a)The output signal is not affected by GPS-L1, BDS-B1 forwarding and generating spoofing signals, and continuously meets the requirement of output signal time synchronization accuracy ≤ 30ns
b)The output signal is not affected by the suppression signals of GPS-L1 and BDS-B1, and continuously meets the requirement of output signal time synchronization accuracy ≤ 30ns
c)Under the condition of full frequency band suppression interference, the signal output can be maintained to meet the requirements of punctuality accuracy
Space-time safety isolation device GTP-02 
