Results 51 to 60 of about 610,391 (205)

Catalog Extraction in SZ Cluster Surveys: a matched filter approach

, 2006
We present a method based on matched multifrequency filters for extracting cluster catalogs from Sunyaev-Zel'dovich (SZ) surveys. We evaluate its performance in terms of completeness, contamination rate and photometric recovery for three representative ...
Angulo, Barbosa, Bartelmann, Benson, Bertin, Blanchard, Borys, Carlstrom, Colafrancesco, Cole, da Silva, Diego, Eisenstein, Eke, Freedman, Haehnelt, Haiman, Herranz, Herranz, Hobson, Holder, Hu, Huetsi, J. Delabrouille, J. G. Bartlett, J.-B. Melin, Jenkins, Jones, Kneissl, Knox, Lima, Lima, Majumdar, Melin, Mohr, Motl, Oukbir, Pierpaoli, Pires, Rosati, Schulz, Schäfer, Seljak, Spergel, Vale, Waldram, Wang, Weller, White   +48 more
core   +3 more sources

Laboratory Studies on Granular Filters and Their Relationship to Geotextiles for Stormwater Pollutant Reduction [PDF]

, 2015
Applications of geotextiles within tertiary stormwater treatment systems and for stormwater infiltration can provide a substrate for biofilm formation, enabling biological treatment of contaminants.
Butler, Hermia, Kiran Tota-Maharaj, Koerner, Parneet Paul, Tota-Maharaj, Vanlandingham   +6 more
core   +4 more sources

Development of an Accurate Low-cost Ultrasonic Localization System for Autonomous Mobile Robots in Indoor Environments

Journal of Measurement Science and Instrumentation, 2010
An accurate low-cost ultrasonic localization system is developed for automated mobile robots in indoor environments,which is essential for automatic navigation of mobile robots with various tasks.Although ultrasonic sensors are more cost-effective than ...
Yong-hwi KIM, Ui-kyu SONG, Byung-kook KIM   +2 more
doaj  

Infrared Small Target Detection Utilizing the Enhanced Closest-Mean Background Estimation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Background estimation is an efficient infrared (IR) small target detection method. However, to deal with unknown targets, the estimation window in existing algorithms should be adjusted to perform multiscale detection and requires a lot of calculations ...
Jinhui Han, Chengyin Liu, Yuchun Liu, Zhen Luo, Xiaojian Zhang, Qifeng Niu   +5 more
doaj   +1 more source

A chi-squared time-frequency discriminator for gravitational wave detection

, 2004
Searches for known waveforms in gravitational wave detector data are often done using matched filtering. When used on real instrumental data, matched filtering often does not perform as well as might be expected, because non-stationary and non-Gaussian ...
Alan Stuart, Athanasios Papoulis, Bruce Allen, Bruce Allen, C. W. Helstrom, F. Acernese, F. Acernese, Gianluca M. Guidi, Hideyuki Tagoshi, Hirotaka Takahashi, Hirotaka Takahashi, J. Mathews, P. Fritschel, T. Uchiyama   +13 more
core   +1 more source

Multi Detector Fusion of Dynamic TOA Estimation using Kalman Filter

, 2015
In this paper, we propose fusion of dynamic TOA (time of arrival) from multiple non-coherent detectors like energy detectors operating at sub-Nyquist rate through Kalman filtering.
Dwivedi, Satyam, Händel, Peter, Yajnanarayana, Vijaya   +2 more
core   +1 more source

Composite matched filter output partitioning [PDF]

Applied Optics, 1987
A common pattern recognition problem is finding a library element closest, in some sense, to a given reception. In many scenarios, optimal detection requires N matched filters for N library elements. Since N can often be quite large, there is a need for suboptimal techniques that base their decisions on a reduced number of filters. The use of composite
R J, Marks Ii, J A, Ritcey, L E, Atlas, K F, Cheung   +3 more
openaire   +2 more sources

Detection of Self-Mixing Interferometric Fringes of a Laser Sensor Using Matched Filter

Proceedings, 2017
Self-Mixing (SM) is a promising technique for sensing vibration, distance, velocity etc. To retrieve accurate metric measurements from an acquired SM signal, it is necessary to correctly detect all interferometric fringes.
Muhammad Akmal, Usman Zabit, Olivier D. Bernal, Thierry Bosch   +3 more
doaj   +1 more source

Matched filter [PDF]

, 2010
Tato práce popisuje základní metody sledování spektra a jejich využití. Pozornost je věnována především detekci přizpůsobeným filtrem, metodě s vysokým ziskem zpracování v krátkém čase. V práci je prezentován vliv hlavních parametrů přizpůsobeného filtru
Lehocký, Jiří
core  

Measuring the Galaxy Cluster Bulk Flow from WMAP data

, 2011
We have looked for bulk motions of galaxy clusters in the WMAP~7 year data. We isolate the kinetic Sunyaev-Zeldovich (SZ) signal by filtering the WMAP Q, V and W band maps with multi-frequency matched filters, that utilize the spatial properties of the ...
Church, S. E., Mak, D. S. Y., Osborne, S. J., Pierpaoli, E.   +3 more
core   +1 more source