An atomic clock-based submerged seismograph and atomic clock taming method

Abstract

The invention discloses an atomic clock-based ups and downs submarine seismograph and an atomic clock taming method, belonging to the technical field of submarine seismographs. It includes a pressure chamber, a seismic sensor, and an atomic clock circuit board. The atomic clock circuit board is used to provide an effective and reliable clock source for the seismograph to realize the clock correction of its own data during the operation of the seabed. The method includes the following steps: Step 1: MCU starts by receiving the high-frequency oscillation signal provided by the atomic clock as a clock source; Step 2: MCU controls the control selection unit; Step 3: MCU performs a screening algorithm on the externally provided PPS to determine the external Clock source type; Step 4: MCU controls the control selection unit; Step 5: MCU sets the taming parameters to the atomic clock, and sends the atomic clock to start taming instructions; Step 6: During the taming process, the MCU obtains the taming status of the atomic clock; Step 7: The MCU sends a taming end command, and the atomic clock taming is completed. The invention is used to solve the problem of the clock difference of data collected by the seabed seismograph.

Description

technical field [0001] The invention relates to the technical field of seabed seismographs, in particular to a sinking and floating seabed seismograph based on an atomic clock and a taming method for the atomic clock. Background technique [0002] The submarine seismograph is an important instrument for seabed geophysical exploration. In the distant sea exploration, the sinking and floating submarine seismograph is the main means of marine seismic exploration. It relies on its own decoupling release mechanism to realize the deployment and recovery of the instrument. Due to its Staying in the sea for a long time, and there is no effective and credible clock source to realize the clock correction of its own data during the seabed work, the accuracy of its own instrument clock is very important, and the internal crystal oscillator of the current submarine seismograph uses The precision of constant temperature crystal oscillator or temperature compensated crystal oscillator is w...

AI Technical Summary

Problems solved by technology

[0002] The submarine seismograph is an important instrument for seabed geophysical exploration. In the distant sea exploration, the sinking and floating submarine seismograph is the main means of marine seismic exploration. It relies on its own decoupling release mechanism to realize the deployment and recovery of the instrument. Due to its Staying in the sea for a long time, and there is no effective and credible clock source to realize the clock correction of its own data during the seabed work, the accuracy of its own instrument clock is very important, and the internal crystal oscillator of the current submarine seismograph uses Constant-temperature crystal oscillator or temperature-compensated crystal oscillator has an accuracy of less than 0.5PPM, so during the long-term stay in the sea, the clock error of its own data collection will accumulate to a relatively large magnitude

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