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.
1. Near Ground channel measurements over line-of-site and forested paths / G.G. Joshi, C.B. Dietrich, C.R. Anderson et al. // IEE Proc. Antennas and Propagation. – 2005. – Vol. 152 (6). – P. 589–596.
2. Sizov V., Gashinova M., Zakaria N., Cherniakov M. VHF communication channel characterizations over complex wooded propagation paths with applications to ground wireless sensor networks // IET Microwaves, Antennas & Propagation. – 2013. – Vol. 7 (3). – P. 166–174.
3. Sizov V., Cheng Hu, Antoniou M., Cherniakov M. Vegetation clutter spectral properties in VHF/UHF bistatic doppler radar // Proc. of The 2008 IEEE Radar Confer-ence (May 26–30, 2008). – Rome, Italy, 2008. – P. 1–6.
4. Phenomenology of Doppler forward scatter radar for surface targets observation / M. Gashinova, L. Daniel, V. Sizov et al. // IET Microwaves, Antennas & Propagation. – 2013. – Vol.7 (4). – P. 422–432.
5. Billingsley J.B. Low-angle radar land clutter. Measurements and empirical mod-els. – William Andrew Publishing, 2002. – 703 p.
6. Сизов В.И., Гуреев А.В. Концепция и состояние исследований сети наземных радиолокационных датчиков малой дальности: Cб. докл. междунар. конф. «Микро-электроника-2015» (Крым, Алушта, 2015). – 2015. – С. 615–626.