Calibration and Evaluation of Body Interaction Effects for the Enhancement of a Body-Borne Radio Direction Finding System
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Calibration and Evaluation of Body Interaction Effects for the Enhancement of a Body-Borne Radio Direction Finding SystemAbstract
A method of moments (MoM) based computational study and design of a body-borne direction finding (DF) system is investigated in this paper. A baseline two-sensor DF system is established, and the performance of this system is characterized with measurements and simulation. A cylindrical human body model is then introduced to the system as a passive scatterer. Computer models of the body-borne system are validated using measurements with a prototype human body phantom. A parametric system response study is performed on the most important model variables to identify system stability. A discussion is presented on how these data may be applied to a direction finding function to generate a direction finding solution. This work clearly demonstrates the ability of modern computational electromagnetics tools to accurately and efficiently predict the response of complex physical systems.
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