The problem of undecided Separating reverberant audio sources is crucial for speech and processing. Numerous separation strategies have been developed to solve this problem; however, all them estimate model parameters in the time–frequency domain, resulting permutation ambiguity poor performance. Additionally, one main challenges with existing expectation–maximization (EM) time needed each iter...

This paper deals with the 3-D moving source localization using time difference of arrival (TDOA), frequency (FDOA), angle (AOA) and AOA rate measurements, gathered from a set spatially distributed receivers. The TDOA, FDOA, measurement equations were firstly established according to space geometric relationship relative Then an efficient closed-form algorithm for position velocity estimation qu...

Research of target localization and tracking is always a remarkable problem in the application wireless sensor networks (WSNs) technology. There are many kinds research applications tracking, such as Angle Arrival (AOA), Time (TOA), Difference (TDOA). The accuracy for TOA, TDOA, AOA better than RSS. However, required devices more expensive In addition, computational complexity also complicated ...

The application of long baseline aided strap-down inertial navigation system (SINS/LBL) has been demonstrated to be an effective solution for accumulative position errors underwater vehicles (UVs). To address the inefficient positioning when available hydrophones are few in acoustic array, a hybrid tightly-coupled SINS/LBL is presented system. composed SINS, LBL and pressure sensor (PS). model ...

Many obsolete coordinate systems used in the past have fallen into disuse. However, the contents of historical documents still refer to these obsolete coordinates and thus translation systems are important in locating historical events. We present a specialized Linked Open Data API constructed to translate obsolete British Trench Map coordinates from the Great War into modern WGS84 coordinates....

As the importance of GNSS to civilian infrastructure increases, the ability to detect and localise sources of interference that disrupts its operation becomes increasingly important. In order to calculate the time-delay measurements in a Time Difference Of Arrival (TDOA) based localisation system for localising interference to GPS within the GNSS Environmental Monitoring System (GEMS), data col...

Cognitive Radio Network (CRN) is an emerging technology used to solve spectrum shortage problems in wireless communications. In CRN, unlicensed secondary users (SUs) and licensed primary (PUs) use resources at the same time by avoiding any interference from SUs. However, sensing process CRN often disturbed a security issue known as Primary User Emulation Attack (PUEA). PUEA one of main issues t...

The partial discharge (PD) leads to catastrophic failure of the medium voltage (MV) switchgear insulation. Determination PD source (defect) location in high (HV) equipment is very important maintenance procedures and isolating root cause generation. In this paper, transient earth (TEV) detection method was used acquire defect-initiated signals a simulated MV model. An array four TEV sensors wer...

A wireless sensor network (WSN) consists of sensor nodes (SNs) with wireless communication capabilities for specific sensing tasks. Among different applications, wireless location technologies which are designated to estimate the position of SNs (Geziciet al., 2005) (Haraet al., 2005) (Patwari et al., 2005)have drawn a lot of attention over the past few decades. There are increasing demands for...