Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 34 for “"DIGITAL FILTERING"”.
-
Low power digital filtering using adaptive approximate processing
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
-
Detection of fast phase of nystagmus using digital filtering
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1983.
-
Residue Number System Recursive Digital Filtering With Error Correction Capabilities
Residue number system (RNS) digital filters are obtained by encoding all filter arithmetic and signals in a residue number system, creating an architecture consisting of a set of parallel arithmetic operations. To prevent overflow, the design and realization of recursive RNS digital filters require …
-
An introduction to linear time-variant digital filtering of seismic data
… dissertation is to introduce linear time-variant digital filters as a technique for the filtering of seismic data. Methods of characterizing linear time-variant digital filters are discussed in general terms. The advantages of the different impulse and frequency responses are cited. In addition, …
-
Application of Digital Filtering Methods to State and Parameter Estimation in Process Plant
The application of on-line state variable and parameter estimation for chemical processes, with particular reference to a pilot plant scale double effect evaporator, has been investigated. The investigation has shown the requirement of some adaptive modification to the recursive Kalman Filter to be …
-
Effects of grid lattice geometry on digital image filtering
… of discrete sample points from an image affect digital image manipulation. The geometries of the grid lattice and edge are described for digital images. Edge detecting digital filters are considered for segmenting an image. A comparison is developed between digital filters for two different …
-
A Multi-Processor System for the Detection of Electrocardiogram Arrhythmias
… by these patient-dedicated processors include digital filtering of the electrocardiogram, the detection and measurement of each heartbeat complex, and the diagnosis of arrhythmias by decision tables. These patient processors then communicate the required patient analysis results and diagnoses …
-
Dynamically reconfigurable management of energy, performance, and accuracy applied to digital signal, image, and video Processing Applications
… for implementing dynamically reconfigurable digital signal, image, and video processing systems. The basic idea is to first generate a collection of Pareto-optimal realizations in the EPA/PPA space. Dynamic EPA/PPA management is then achieved by selecting the Pareto-optimal implementations …
-
Parametric design of an adaptive line enhancer for multiple switching tones in a correlated noise environment
… analysis is performed with four methods of digital filtering including a conventional Digital Fourier Transform (DFT) algorithm, a Least Mean Squares (LMS) adaptive algorithm, a Fast Recursive Least Squares (Fast RLS) adaptive algorithm, and the Fast Gradient adaptive algorithm. The DFT …
-
Adaptive Blocker Cancellation For Wireless Receivers
… receiver. Current state-of-the-art analog filtering ADCs are analyzed and compared in detail. Recognizing that the analog circuitry requires accurate calibration and PVT correction, a digital filtering ADC in the baseband is proposed that has a digitally defined transfer function that is …
-
Data processing in nanoscale profilometry
… three dimensional profile, many techniques like digital filtering, edge identification, and image matching are investigated and implemented in the computer programs to post process the data, and with greater emphasis placed on the nanoscale application. The important programming issues are …
-
Time Aliasing Methods of Spectrum Estimation
… aliasing, including overlap-and-add methods of digital filtering, have focused on the elimination of time aliasing effects in the frequency domain in order to improve the representation of reconstructed signals in the time domain and have not addressed the issues associated with spectrum …
-
On-line Computer Analysis of Plant Dynamics
… study the techniques and to reduce the noise by digital filtering. A computer package is also developed for fitting a transfer function to experimental data and for frequency response data analysis. A package for on-line data acquisition is modified to generate a prbs and to collect data from …
-
Development of An Adaptive Kalman Filter for Estimation in Chemical Plant.
… interactive data acquisition. (ii) The On-line Digital Filtering Package (OLDFP), a real-time operating system which controls the execution and data acquisition of filtering programs written in Fortran. Finally, a series of on-line filtering experiments were carried out, the results of which …
-
Thermoelectric Cooler Based Temperature Controlled Environment Chamber Design for Application in Optical Systems
… and applied in the final assembly -- including a digitally implemented signal generator, an error correction controller, and the environment chamber heat sink structure. The signal generator is used as input for a switched-mode based Peltier driver found commercially. A feedback error controller …
-
Joint time-frequency analysis and filtering of single trial event-related potentials.
… background EEG. A novel wavelet-based adaptive digital filtering method for ERPs has been developed. The method provides the ability to effectively estimate or recover single ERPs. The effectiveness of the method has been quantitatively evaluated and compared with other methods of ERP …
-
Magnetic resonance microscopy
… implementation of the algorithm, including digital filtering and sampling requirements. Images obtained from simulated data are presented to illustrate the accuracy and potential utility of the technique. The second part of this work studied the effects of restricted diffusion on the …
-
Design and development of a composite frequency response analyser
… significant advantages over existing analogue/digital filtering techniques. The theoretical basis for the technique is developed, and a method for its mechanisation within the developed instrument is presented.<br/><br/>This anti-aliasing algorithm has been incorporated within the analyser and …
-
Assessment of the effect of climate change in anticipated water resources availability in arid climate zones
… the results of the flow duration curve and the digital filtering algorithms to overcome the limitations of the traditional baseflow separation methods, and then determine the baseflow annual variations. The water yielded from the basin storage system during the dry seasons resulted in …
-
Microprocessor applications to the phenomena associated with high-voltage transmission line transients
… recent mathematical techniques developed for the digital computer. The combination of the two technologies suggest a hybrid T N A system where switching and monitoring of the analogue transmission line model and its response are controlled by a decision-making microprocessor.<br/><br/>This study …
Page 1 of 2