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For studying this phenomenon it is necessary to perform the long-term experimental tests at specific frequencies of the system operation in different weather conditions. The problems of designing a stand-alone module for collecting and processing signals in a multi-channel radar receiver have been examined. The technical requirements, the module structure, the operating principles and parts, used in order to obtain the 24-bits accuracy, the long battery life and small size have been discussed. The data logger considered is designed for the multi-channel (up to 8 channels) 24-bits analog-to-digital conversion of analogue signals with the sampling frequency up to 200 Hz in each channel and for writing the digitized data to an SD card (up to 32 GB) during 168 hours battery operation.

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