Portable Device for Time-Frequency Analysis of Signals in Extremely Low Temperatures of the Arctic and Antarctic

The paper focuses on the development of a portable device for time-frequency analysis of signals in extremely low temperatures of the Arctic and Antarctic. In its realization, the microcontroller 1986BE91T of Russian manufacture Milandr was used. The choice of the microcontroller was based on the requirements of the element base to ensure the operation of the microcontroller at the temperature down to -60 degrees Celsius. The device is operated at the temperature below -60 degrees Celsius by means of a protective thermocase with an independent heating element. The operational capacity of the device was verified in the climatic chamber at the temperature and pressure appropriate to the conditions at the station Vostok. The device is intended for time-frequency analysis of seismic signals and can also be used for analysis of biomedical signals.