Searched for: subject:"process"
(1 - 16 of 16)
document
Ibrahim, Raed Khalaf (author), Watson, S.J. (author), Djurović, Siniša (author), Crabtree, C.J. (author)
Determining the magnitude of particular fault signature components (FSCs) generated by wind turbine (WT) faults from current signals has been used as an effective way to detect early abnormalities. However, the WT current signals are time varying due to the constantly varying generator speed. The WT frequently operates with the generator close...
journal article 2018
document
Ma, Feng (author)
In the hospital environment, the variations in respiratory information (RI) are typically used for indicating the health condition of the patients. With RI known, corresponding parameters in both time domain (respiratory rate) and frequency domain (respiratory power) can be extracted to indicate the health condition. However, the monitoring...
master thesis 2018
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Lunglmayr, Michael (author), Castro Do Amaral, G. (author)
Supervision of the physical layer of optical networks is an extremely relevant subject. To detect fiber faults, single-ended solutions, such as the optical time-domain reflectometry (OTDR), allow for precise measurements of fault profiles. Combining the OTDR with a signal processing approach for high-dimensional sparse parameter estimation...
journal article 2018
document
Groves, R.M. (author)
Fibre optic sensors can measure a range of physics and chemical parameters. Some of the more common fibre optic sensors are the fibre Bragg grating (FBG), the long period grating (LPG), the Fabry-Pérot Interferometer (FPI) and various distributed fibre optic sensors based on optical time-domain reflectometry (OTDR) and optical frequency domain...
conference paper 2017
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Tang, N. (author)
master thesis 2016
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Baksteen, T. (author)
The topic of this thesis is the Electrical Network Frequency (ENF) Criterion as a method to determine both the time of recording and the location of an audio file when no or corrupted meta-data is available. This may be possible when the recording equipment is mains powered or when it is situated in electromagnetic field of the power grid. Then...
master thesis 2015
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Berkhout, A.J. (author), Blacquière, G. (author)
If simultaneous shooting is carried out by incoherent source arrays, being the condition of blended acquisition, the deblending process generates shot records with a very low residual interference (blending noise). We found, theoretically and numerically, that deblended shot records had a better background-related signal-to-noise ratio than shot...
journal article 2013
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Van Borselen, R.G. (author), Fokkema, J.T. (author), Van den Berg, P.M. (author)
In marine seismic acquisition, the free surface generates seismic events in our recorded data that are often categorized as noise because these events do not contain independent information about the subsurface geology. Ghost events are considered as such noise because these events are generated when the energy generated by the seismic source,...
journal article 2013
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Liu, P. (author), Groves, R.M. (author), Benedictus, R. (author)
Based on a customized time-domain optical coherence tomography (OCT) system, a series of signal processing approaches have been designed and reviewed. To improve demodulation accuracy and image quality, demodulation approaches such as median filter, Hilbert transform, and envelope detector were investigated with simulated as well as experimental...
journal article 2013
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Van der Torren, P.T. (author)
In this study methods are developed for improved analysis and processing of PSI data. PSI, or radar interferometry, makes it possible to use satellite radar images to measure deformation of the Earth’s surface and objects on it with millimetre accuracy. However, interpretation of the measurements and identifying the actually measured objects is...
master thesis 2011
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Colin, M.E.G.D. (author)
The end of the Cold War and the collapse of the Warsaw pact have resulted in a change of operational theatre for the naval forces of the North Atlantic Treaty Organisation (NATO). In particular, the focus of Anti Submarine Warfare forces has shifted from tracking Soviet nuclear ballistic missile submarine in the deep waters of the Atlantic ocean...
doctoral thesis 2011
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Doets, P.J.O. (author)
An audio fingerprint is a compact low-level representation of a multimedia signal. An audio fingerprint can be used to identify audio files or fragments in a reliable way. The use of audio fingerprints for identification consists of two phases. In the enrollment phase known content is fingerprinted, and ingested into a database, together with...
doctoral thesis 2010
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Venkateswaran, V. (author)
One of the major drawbacks towards the realization of MIMO and multi-sensor wireless communication systems is that multiple antennas at the receiver each have their own separate radio frequency (RF) front ends and analog to digital converter (ADC) units, leading to increased circuit size and power consumption. Improvements in RF and ADC...
doctoral thesis 2010
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Wilmer, D.W.H. (author), De Ridder, G.R. (author), Kol, A.A. (author), Harkes, D.C. (author)
This bachelor report describes the creation of a fun and informative robot game for the Science Centre Delft. The project entails simulating the classic Pacman computer game using real robots. One robot, Pacman, is controlled by a player and has to fulfil certain assignments. Simultaneously the other robots, monsters, try to catch Pacman. A...
report 2010
document
Groen, J. (author)
In recent years, sonar performance has mainly improved via a significant increase in array ap-erture, signal bandwidth and computational power. This thesis aims at improving sonar array processing techniques based on these three steps forward. In applications such as anti-submarine warfare and mine hunting motion of the sonar needs to be...
doctoral thesis 2006
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Wang, C. (author)
Lack of facilities in supporting design reuse is a serious problem in product shape modeling, especially in computer-aided design systems. This becomes a bottleneck of fast shape conceptualization and creation in consumer product design, which consequently prohibits creativity and innovation. In the past, several efforts have been made in order...
doctoral thesis 2005
Searched for: subject:"process"
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