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We present an analysis of the time of arrival (TOA) and time difference of arrival (TDOA) based positioning methods in Non-Line-of-Sight (NLOS) environments. Single path propagation is assumed. The positioning accuracy is investigated in terms of Dilution of precisions (DOPs) depending on different NLOS cases. We then show that the weighted DOP (WDOP) is equal to the Cramer-Rao Lower Bound (CRLB)...
Face recognition has received significant attention in the last decades for many potential applications. Recently, the scale invariant feature transform (SIFT) becomes an interesting technique for the task of object recognition. This paper investigated the application of the SIFT approach to the face recognition and proposed a new method based on SIFT and support vector machine (SVM) for the face...
Measuring corona discharge current directly on the high-voltage side is essential for the discharge mechanism research of the test object. The amplitude of the corona discharge current is in microamperes, and its frequency ranges from DC to megahertz. An optical microcurrent transducer for measurement of the current is described in this paper based on an amplitude modulation principle. A low-pass...
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