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The reversal of the current directions in audio circuit elements causes polarity inversion of the acquired audio signal with respect to the reference input signal. The objective of the work presented in this paper is to implement a simple polarity detection circuit in audio preamplifiers which provides an indication of the signal polarity inversion. The present work also demonstrates the possibilities...
Large array size real time direction finding systems like phased array radars require very fast processing of signals. With subspace based array signal processing like MUltipleSIgnalClassification (MUSIC) algorithm high accuracy and resolution can be achieved if the data collection time is sufficiently large or the Signal to Noise Ratio (SNR) is adequately high. However high computational complexity...
This letter proposes an elegant 1-D search technique to compute 2-D DOA estimation using the MUSIC algorithm for the case of a single source. Unlike a conventional planar array configuration for 2-D DOA estimation, this letter involves a linear array with alternate elements orthogonally polarized. The validity of the proposed analysis has been established through specific cases of array elements being...
Intrusion Detection Systems (IDS) have emerged as one of the most promising ways to secure systems in network. An IDS operates by scanning packet-data for known signatures and accordingly takes requisite action. However, scanning bytes in the packet payload and checking for more than 20,000 signatures becomes a computationally intensive task. Additionally, with signatures doubling almost every 30...
Recent trends in high-performance computing point toward increasingly large machines with millions of processing, storage, and networking elements. Unfortunately, the reliability of these machines is inversely proportional to their size, resulting in a system-wide mean time between failures (MTBF), ranging from a few days to a few hours. As such, for long-running applications, the ability to efficiently...
A substantial increase of photovoltaic (PV) power generators installations has taken place in recent years, due to the increasing efficiency of solar cells as well as the improvements of manufacturing technology of solar panels. These generators are both grid-connected and stand-alone applications. The paper concentrates on the operation and modeling of stand-alone power systems with PV power generators,...
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