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In this paper, we propose a new adaptive clutter suppression algorithm in impulse radio ultra wide band IR-UWB) radar system. It effectively removes static clutter signals whereas sufficiently maintaining reflected signals from human body. Compared to previous methods, it makes moving target signals more notable and improves detection probability by increasing peak to average power ratio (PAPR) of...
A localization using an impulse radio ultra-wideband (IR-UWB) radar has obtained popularity. The IR-UWB radar is appropriate to detect a passive target which does not transmit a specific signal to other anchor nodes. To use the radar in practical situations, efficient clutter suppression and peak detection methods have to be required. Therefore, in this paper, we propose enhanced clutter removal and...
In this paper, we propose a novel array interpolation method in logarithmic domain for enhanced direction of arrival (DOA) estimation. Array interpolation techniques are broadly utilized in the DOA estimation for achieving better angular resolution. Generally, to generate interpolated array elements from original array elements, the method of linear least squares (LLS) has been used. When we use the...
We experimentally investigated effective thermal conductivities and viscosities of water-based nanofluids containing Al2O3 (Al2O3-nanofluids) with low concentration from vol. 0.01% to 0.3%. Without surfactant, Al2O3-nanofluids are manufactured by two-step method which is widely used. To examine suspension and dispersion characteristics of Al2O3-nanofluids, zeta potential as well as transmission electron...
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