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22 April 2010 Seismic-acoustic communication for UGS
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The paper deals with Unattended Ground Sensors (UGS) and takes into consideration both present and future aspects of the practical deployment of this equipment under conditions of Electronic Warfare (EW), including the integration of UGS into a joint system using the Unmanned Aircraft System (UAS). The first part of the paper deals with the possibilities, characteristics and useable properties of seismic-acoustic communication in the group of nodes, supplementing the information coverage of existing UGS, including the selection of a suitable working frequency band for seismic communication. The second part of the paper then describes an alternative method of communication between nodes and UGS using LF radio communication, and analyses the design and real properties of a proposed communication channel in LF band, the design of a loop antenna and its mechanical construction. The interim conclusions of each section generalize the results of seismic-acoustic and radio LF communications as verified in practice, and describe both the advantages and disadvantages of communication channels defined in this way. The third part of the paper deals with the possibility of integrating the nodes-UGS to a central system consisting of a UAS device. It covers the design and an energy evaluation of a system operating on the principle of data selection from UGS. In addition, the paper includes illustrative photographs of the practical design and graphic results of real measurements.
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Jaroslav Cechak "Seismic-acoustic communication for UGS", Proc. SPIE 7693, Unattended Ground, Sea, and Air Sensor Technologies and Applications XII, 76931D (22 April 2010);

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