This paper addresses the source location problem by using time-difference-of-arrival (TDOA) measurements. The two-stage weighted least squares (TWLS) algorithm has been widely used in TDOA location. However, estimation accuracy of is poor and bias significant when measurement noise large. Owing to nonlinear nature system model, we reformulate localization as a constrained derive theoretical est...

We consider a sensor network, which in the presence of a rogue sensor, is tasked with estimating emitter location under the time difference of arrival (TDOA) method. The rogue seeks to maximally degrade estimation accuracy by injecting a single false report of sensor position. Our closed form solution gives a set of false positions that minimize the network’s Fisher Information Matrix (FIM). We...

This paper made analysis of present situation and development trend of the positioning in small range at first and then made summary about the technologies and algorithms of the positioning in small range. According to the above content, wireless location technology has broad application prospects, especially the applications related to the location in small range. This new wireless positioning...

The aim of this work is the evaluation of sate-of-the-art self-calibration algorithms for synchronized distributed microphone arrays. Here, self-calibration refers to the task of estimating microphone positions assuming unsynchronized source signals emitted from unknown locations. To simplify the whole procedure, it is assumed that the positions of the microphones and of the sources are station...

Multistream diarization is an effective way to improve the diarization performance, MFCC and Time Delay Of Arrivals (TDOA) being the most commonly used features. This paper extends our previous work on information bottleneck diarization aiming to include large number of features besides MFCC and TDOA while keeping computational costs low. At first HMM/GMM and IB systems are compared in case of ...

This article designs and implements a 3D moving target positioning tracking system by using ultrawideband (UWB) technology. The result of the two-way ranging time difference arrival (TWR-TDOA) algorithm is adopted to in new resolution that resolve hyperbolic equations. proposed applied outdoor indoor scenarios. To minimize effect sensor layout, this proposes simplified multi-population genetic ...

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 ...