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A probable region (PR) for the location of an emitter is useful for quantifying the reliability of a location estimate and for defining a search region. Previous investigations have yielded equations that define PRs having the form of error or uncertainty ellipses (or ellipsoids) given the assumption of Gaussian probability density functions (pdfs). The new derivation proposed in this paper differs...
This paper documents current investigations which are attempting to find a suitable audio pattern to identify the moment when a prosthetic hip-joint replacement has been correctly inserted into the thigh bone. Research Questions: We have two objectives: first is there any distinctive pattern of sound frequency or resonation associated with proper femoral rasping? Second: can we predict the point where...
Air platforms can localize an emitter in 3-dimensions, by measuring the incident signal's angle-of-arrival (AOA). The resulting localization equations are nonlinear, since they contain arctangent functions of azimuth and elevation and can be computationally complex to solve. By assuming small AOA measurement errors, this paper provides a linear formulation, leading to a closed-form, weighted least...
Water pollution is one of the severe problems that have a crippling effect on public hygiene. The detection of impurities present in the water is of high priority to battle its effects. In this paper, we propose a novel method to perform detection of such impurities by exploiting the dielectric constant variations caused by its presence. We present a microstrip resonator that measures the dielectric...
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