A Time Recording and Clock Synchronization Method for Marine Instruments

Abstract

The invention relates to a time recording and clock synchronizing method and device for oceanographic instruments. The time recording and clock synchronizing device for the oceanographic instruments comprises a GPS antenna, a time recording and clock synchronizing device body, a power supply, an upper PC and a trigger device, wherein the GPS antenna is connected with the time recording and clock synchronizing device body, the power supply and the trigger device are connected to the time recording and clock synchronizing device body, and the time recording and clock synchronizing device body is connected to the upper PC. The time recording and clock synchronizing method and device for the oceanographic instruments have the advantages of being high in integration level, high in antijamming capability, high in reliability, capable of achieving the backup function, and the like. The time recording and clock synchronizing method and device for the oceanographic instruments is suitable for time calibration and clock synchronization of the multiple oceanographic instruments.

Description

technical field [0001] The invention relates to a marine instrument, in particular to a time recording and clock synchronization method and device for the marine instrument, belonging to the technical field of marine. Background technique [0002] More effective monitoring of the state data of the marine environment is the basic premise for the continuous development of the marine economy. In recent years, in order to conduct comprehensive monitoring of marine environmental data, various sensors with different purposes have been invested. These observers all have their own data acquisition and transmission systems. Due to the lack of a time calibration system between different detection instruments, these data are collected After reaching the computer, the lack of synchronization between the acquisition times often seriously affects the practical value of the data. For example, due to the lack of synchronization mechanism with the reference time, the submarine seismic detect...

AI Technical Summary

Problems solved by technology

In recent years, in order to conduct comprehensive monitoring of marine environmental data, various sensors with different purposes have been invested. These observers all have their own data acquisition and transmission systems. Due to the lack of a time calibration system between different detection instruments, these data are collected After reaching the computer, the lack of synchronization between the acquisition times often seriously affects the practical value of the data. For example, due to the lack of synchronization mechanism with the reference time, the submarine seismic detector will not be able to provide the accurate time of the arrival of the ground vibration signal, and thus cannot be compared with the Compare the data obtained by other stations to accurately analyze and locate the source of the earthquake

[0003] Compared with the terrestrial environment, the marine environment has the characteristics of a vast area and poor electrical foundation conditions. The distributed system time synchronization system on land cannot be directly applied to marine instruments.

Therefore, the development of a device capable of microsecond-level precision time synchronization for distributed instruments or devices has broad application prospects. At the same time, while monitoring ocean data, some events will also be artificially stimulated. For example, in the exploration of marine resources, it is necessary to Firstly, the artificial seismic source is excited to generate a vibration signal, and then the signal is collected, and the distribution law of the seabed resources is obtained by analyzing the propagation characteristics. In this process, it is particularly important to accurately record the time when the artificial seismic source is generated. subsequent processing error

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