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Tracking technique for manoeuvring target with correlated measurement noises and unknown parameters

J.-A. Guu, C.-H. Wei
1991 IEE Proceedings F Radar and Signal Processing  
The problem of tracking a manoeuvring target with sequentially correlated measurement noise is considered in the paper.  ...  Using Singer's method to model the manoeuvring target, the correlated measurement noise can be decorrelated by reformulating the measurement equation such that the conventional Kalman filter can be directly  ...  Acknowledgment The authors thank the referees for many helpful comments and suggestions on the presentation of the paper.  ... 
doi:10.1049/ip-f-2.1991.0037 fatcat:mjllkmlodzb3bkx3wkh4tnfbbq

Distributed decorrelation in sensor networks with application to distributed particle filtering

Michael Moldaschl, Wilfried N. Gansterer, Ondrej Hlinka, Florian Meyer, Franz Hlawatsch
2014 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)  
We apply the algorithm to consensus-based distributed particle filtering in a target tracking problem with correlated measurement noises.  ...  Here, we propose a distributed algorithm for decorrelating the sensor measurements in a wireless sensor network.  ...  As an example, we consider distributed sequential state estimation using a consensus-based distributed particle filter [5] . This paper is organized as follows.  ... 
doi:10.1109/icassp.2014.6854779 dblp:conf/icassp/MoldaschlGHMH14 fatcat:smixpoitqfbsfchyi6bk3qylcy

Coherence estimation for repeat-pass interferometry

Jeremy Dillon, Vincent Myers
2014 2014 Oceans - St. John's  
The method can be applied to any SAS without requiring access to raw acoustic data or postprocessing of data from a high grade inertial navigation system.  ...  This imposes strict requirements on the navigation accuracy of the sonar platform that cannot be met using inertial or underwater positioning sensors alone.  ...  ACKNOWLEDGMENT We thank the PISCES2 team from DRDC Atlantic, Fleet Diving Unit Atlantic, the Bedford Institute of Oceanography, and Kraken Sonar Systems for supporting the SAS sea trial.  ... 
doi:10.1109/oceans.2014.7003197 fatcat:3n4lzkqil5hupihpp2aqurrk2e

In Vivo Thermal Ablation Monitoring Using Ultrasound Echo Decorrelation Imaging

Swetha Subramanian, Steven M. Rudich, Amel Alqadah, Chandra Priya Karunakaran, Marepalli B. Rao, T. Douglas Mast
2014 Ultrasound in Medicine and Biology  
In the in vivo studies reported here, the feasibility of using echo decorrelation imaging as a treatment monitoring tool is assessed.  ...  Previous work has shown ultrasound echo decorrelation imaging can track and quantify changes in echo signals to predict thermal damage during in vitro radiofrequency ablation (RFA).  ...  (a) Decorrelation at the end of RFA treatment, with and without motion gating.  ... 
doi:10.1016/j.ultrasmedbio.2013.09.007 pmid:24239361 pmcid:PMC3849110 fatcat:afjkfhlljnhbvdoxxpubx4xgqu

Spectrally Extended Line Field Optical Coherence Tomography Angiography [article]

Si Chen, Kan Lin, Linbo Liu
2021 arXiv   pre-print
Optical coherence tomography angiography (OCTA) has been established as a powerful tool for investigating vascular diseases and is expected to become a standard of care technology.  ...  In addition, the 'frequency flow' imaging mechanism facilitates OCTA-data based motion tracking with overlap between adjacent line fields.  ...  Ministry of Education Singapore under its Academic Research Funding Tier 2 (MOE-T2EP30120-0001).  ... 
arXiv:2109.03151v2 fatcat:xq4gousknrcydkpeimrkidfpmq

Distributed Target Tracking in Challenging Environments Using Multiple Asynchronous Bearing-Only Sensors

Yifang Shi, Jee Woong Choi, Lei Xu, Hyung June Kim, Ihsan Ullah, Uzair Khan
2020 Sensors  
The track management is carried out at local sensor level and also at the fusion center by using the recursively calculated probability of target existence as a track quality measure.  ...  In the central tracking, the fusion center uses the proposed distributed IPDA-forward prediction fusion and decorrelation (DIPDA-FPFD) approach to sequentially fuse the OOS information transmitted by each  ...  [28] suggested a new methodology termed as the forward prediction fusion and decorrelation (FPFD) for tackling the OOSM problem without relying on the retrodiction technique, wherein, a tracklet is  ... 
doi:10.3390/s20092671 pmid:32392866 pmcid:PMC7248723 fatcat:ir2u6qtrhjeyhhdybjqo4biyca

A sparse code increases the speed and efficiency of neuro-dynamic programming for optimal control tasks with correlated feature inputs [article]

Peter N. Loxley
2020 arXiv   pre-print
This is used in sequential learning to store a potentially large number of optimal control tasks in the network, while catastrophic forgetting is avoided using a partitioned representation, yielding a  ...  A complete sparse code is found to maximise the memory capacity of a linear network by decorrelating its feature inputs to transform the design matrix of the least-squares problem to one of full rank.  ...  Part of this work was completed on sabbatical at the Redwood Center for Theoretical Neuroscience, University of California, Berkeley.  ... 
arXiv:2006.11968v2 fatcat:nbdtizfvxjhtnpnzjdx6slmwfu

Cross-correlation-based image acquisition technique for manually-scanned optical coherence tomography

Adeel Ahmad, Steven G. Adie, Eric J. Chaney, Utkarsh Sharma, Stephen A. Boppart
2009 Optics Express  
We present a novel image acquisition technique for Optical Coherence Tomography (OCT) that enables manual lateral scanning.  ...  This technique could enable the acquisition of images during manual OCT needle-guided biopsy or catheter-based imaging, and for assembly of large field-of-view images with hand-held probes during intraoperative  ...  This research was supported in part by grants from the National Institutes of Health (NIBIB, 1 R01 EB005221; Roadmap, 1 R21 EB005321, S.A.B.).  ... 
doi:10.1364/oe.17.008125 pmid:19434144 pmcid:PMC2883319 fatcat:fnztr6txdzc3tmnytqsd4owdr4

Sequential Markov Chain Monte Carlo for multi-target tracking with correlated RSS measurements

Roland Lamberti, Francois Septier, Naveed Salman, Lyudmila Mihaylova
2015 2015 IEEE Tenth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)  
In this paper, we present a Bayesian approach to accurately track multiple objects based on Received Signal Strength (RSS) measurements.  ...  Additionally, the superiority of the proposed Sequential Markov Chain Monte Carlo (SMCMC) method over the more common Sequential Importance Resampling (SIR) technique is empirically demonstrated through  ...  As a consequence, the cost of the computation of the likelihood in Eq. (6) that will be required in the filtering algorithm increases with time.  ... 
doi:10.1109/issnip.2015.7106901 dblp:conf/issnip/LambertiSSM15 fatcat:lx6rjkwplzer3aifxzrkdiueli

Expanded decorrelating detector with reduced noise enhancement for multipath frequency-selective fading channels

H. Zhou, P. Xiao, W.L. Woo, B.S. Sharif
2008 IET Communications  
Meanwhile, for this new detection strategy, a novel Kalman filter-based adaptive power estimation algorithm is developed.  ...  The proposed detector uses interference cancellation (IC) technology to reduce the rank of the expanded signal subspace and hence it enjoys the advantages of the expanded decorrelating detector in terms  ...  One of the desirable properties of the decorrelating detector is that it does not require any a priori information of the signal amplitudes (thus it is immune to the near-far effect).  ... 
doi:10.1049/iet-com:20070200 fatcat:aysmo4vhvjgdbheielnucgwu24

Time difference of arrival estimation of speech source in a noisy and reverberant environment

Tsvi G. Dvorkind, Sharon Gannot
2005 Signal Processing  
Determining the spatial position of a speaker finds a growing interest in video conference scenario where automated camera steering and tracking are required.  ...  As a preliminary step for the localization, microphone array can be used to extract the time difference of arrival (TDOA) of the speech signal.  ...  Equations In cases where the source is moving, a tracking procedure is required, and a recursive solution for the nonlinear LS problem in Eq. (9) is called upon.  ... 
doi:10.1016/j.sigpro.2004.09.014 fatcat:bypjnqxos5h6hhtnahxk6s7pra

In vivoliver tracking with a high volume rate 4D ultrasound scanner and a 2D matrix array probe

Muyinatu A Lediju Bell, Brett C Byram, Emma J Harris, Philip M Evans, Jeffrey C Bamber
2012 Physics in Medicine and Biology  
speed of 2 volumes per second due to hardware restrictions of a mechanical 13 linear array probe.  ...  In vivo livers of three volunteers were scanned with and without 16 respiratory motion at volume rates of 24 and 48 Hz, respectively. Respiration was 17 suspended via voluntary breath hold.  ...  Maps are available for each of the three components of 151 displacement and for every two sequentially-acquired volumes in a data set (i.e. as 152 a function of time). 153 Motion was analyzed in a 3D  ... 
doi:10.1088/0031-9155/57/5/1359 pmid:22349408 fatcat:esv32tgr4fhl3heh4ahfno24fu

An Optimal Sequential Decentralized Filter of Discrete-time Systems with Cross-Correlated Noises

Chenglin Wen, Chuanbo Wen, Yuan Li
2008 IFAC Proceedings Volumes  
We uses a hierarchical structure to perform successive orthogonualizations of the measurement noises, and the Kalman filters sequentially runs based on the new constructed measurement sequency.  ...  The the estimator also can process the system with measurements delay as well as data fault because the update step is just according to the coming order of sensors in a recursive form.  ...  This paper presents a sequential filtering for discrete timevarying linear stochastic system with cross-correlated state noise and measurement noises.  ... 
doi:10.3182/20080706-5-kr-1001.01278 fatcat:iuud6gmoabbxzbuctwbdoek6ma

Multi-channel signal separation by decorrelation

E. Weinstein, M. Feder, A.V. Oppenheim
1993 IEEE Transactions on Speech and Audio Processing  
As a special case, these algorithms suggest a potentially interesting modification of Widrow's least-squares method for noise cancellation, when the reference signal contains a component of the desired  ...  In a variety of contexts, observations are made of the outputs of an unknown multiple-input multiple-output linear system, from which it is of interest to identify the unknown system and to recover the  ...  can be measured a priori.  ... 
doi:10.1109/89.242486 fatcat:ecminoupczgatpwvjoiwikxrum

The Impact of Physiological Motion on Tissue Tracking During Radiation Force Imaging

Brian J. Fahey, Mark L. Palmeri, Gregg E. Trahey
2007 Ultrasound in Medicine and Biology  
Evaluation criteria included motion filter effectiveness, image signal-to-noise ratio (SNR), and the contrast-to-noise ratio (CNR) of a stiff inclusion embedded in a homogeneous background material.  ...  Two transmit frequencies (2.5 and 4.4 MHz) were analyzed and contrasted in terms of image quality over a range of target motions.  ...  In the presence of lateral target motion, the amount of radial displacement measured by a tracking beam θ degrees from the central axis can be described by: U radial = U lateral * sinθ, (2) where U radial  ... 
doi:10.1016/j.ultrasmedbio.2007.01.007 pmid:17451869 pmcid:PMC2075097 fatcat:wovek6nhkfa4zm6b5ibgeyykiu
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