Geophysical research: article

I. Aleshin1,2
S. Ivanov1
V. Koryagin1
I. Matveev1
F. Perederin1
A. Soloviev2,1
K. Kholodkov1
1 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
2 The Geophysical Center of the Russian Academy of Sciences
Journal: Geophysical research
Tome: 21
Number: 3
Year: 2020
Pages: 50-65
UDK: 550.380+550.8.04+550.8.028
DOI: 10.21455/gr2020.3-4
Full text
Keywords: INTERMAGNET, one-second data logging, operational data transfer, SeedLink, MQTT, geomagnetic observatory
Аnnotation: The purpose of the presented research is the development of a modern information infrastructure for a regional (or a segment of a global) network of geomagnetic observatories, allowing to automate the acquisition, storage and distribution of measurement data as much as possible, including their transmission in real time. We discuss the solution for a number of tasks necessary for the implementation of such a system. In particular, a number of technical aspects of developing a system for geomagnetic data acquisition such as accuracy of the time stamp setting and the choice of a protocol for operational transfer of measurements, including in real time are considered. SeedLink protocol is compared to MQTT protocol with detailed description. The paper also includes the implementation of infrastructure for operational acquisition of geomagnetic measurement results based on the SeedLink protocol. Besides, there is a brief description of the structure of the Data Aggregation Center and a review of a functioning model of a geomagnetic observatory with FGE and POS -1 measuring devices, ADC module Seisar-5 and a data logger based on a single-board computer.