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 20 for “"Data Detection"”.
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Malicious data detection and localization in state estimation leveraging system losses
… economic dispatch, contingency analysis, and the detection of faulty equipment rely on the output of the state estimator. Typically, state estimations are made based on the network topology information and the measurements from a set of sensors within the network. The state estimates must be …
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Malicious data detection in state estimation leveraging system losses & estimation of perturbed parameters
… even in the presence of erroneous measurement data. Traditional bad data detection is designed to perform well against isolated random errors. Interacting bad measurements, such as malicious data injection attacks, may be difficult to detect. In this work, we analyze the sensitivities of …
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Assessment of Cyber Vulnerabilities and Countermeasures for GPS-Time Synchronized Measurements in Smart Grids
… real-world GPS-spoofing attack (GSA) and false data injection attack (FDIA) scenarios. Moreover, the testbed can incorporates cyberattack detection algorithm in pseudo real-time. After that, we propose three stealthy attack scenarios that exploit the vulnerabilities of time-synchronization for …
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Anomaly Detection for Control Centers
… by the control center dwell on the measurement data received from substations. These measurements estimate the state of the power grid. Measurement-based cyber attacks have been well studied to be a major threat to control center operations. Stealthy false data injection attacks are known to …
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Decentralized Baseband Processing for Massive MU-MIMO Systems
… requires computationally-complex algorithms for data detection in the uplink (users transmit to base-station) and beamforming in the downlink (base-station transmits to users). Most existing algorithms are designed to be executed on centralized computing hardware at the base-station (BS), which …
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Novel Estimation and Detection Techniques for 5G Networks
The thesis presents several detection and estimation techniques that can be incorporated into the fifth-generation (5G) networks. First, the thesis presents a novel system for orthogonal frequency division multiplexing (OFDM) to estimate the channel blindly. The system is based on modulating …
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Synchrophasor-Only Dynamic State Estimation & Data Conditioning
… However, insuring the quality of the data stream which leaves the linear estimator is crucial to establishing it as the front end of an EMS system and network applications which employ synchrophasor data. This can be accomplished using a two-fold solution: the pre-processing of phasor …
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Synchronized Measurement of Machine Rotor Angle and Its Application
… predicted accurately. This capability makes bad data detection and communication delay compensation possible.
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Optimal placement of phasor measurement units using the Advanced Matrix Manipulation algorithm
… begins with review of Supervisory Control and Data Acquisition systems (SCADA). SCADA-based systems are currently employed for condition monitoring and control of industrial and utility electrical power systems. For utility power networks, the main problem with voltage and current phasor data …
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Distributed Control, Optimization, and State Estimation for Renewable Power System
… State Estimation (DSE) algorithm. Then, the bad data detection and measurement accuracy improvement topics in state estimation are discussed. Then, based on the proposed DED algorithm and DSE algorithm, the Distributed Optimal Power Flow (DOPF) method is developed. Finally, the AC power flow …
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The Impact of Instrumentation Location and Reliability on the Performance of Operators Using an Ecological Interface for Process Control
… However, EID has assumed that the raw data needed to derive the higher-order information could be measured and that the graphics would not be susceptible to instrumentation failures. In fact, recent EID research indicates that current instrumentation technology and specification …
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Non-orthogonal random waveform based multiuser communications
… for joint iterative channel estimation, data detection and channel decoding. The algorithm proposed can be readily employed to replace all detection algorithms used throughout Chapters 3 to 5, when a high throughput is desired.
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Homo prospectus to robo prospectus : towards predictive algorithms for advanced autonomous vehicle perception
… stack's blocks that proceed Prediction, namely, data, detection, and prediction. Firstly, we introduced ROAD-Waymo, an extensive dataset that significantly augments the (US) Waymo Open dataset with a wealth of annotations, enabling the development and benchmarking of algorithms for agent, action, …
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Multiframe Superresolution Techniques For Distributed Imaging Systems
… algorithm called two-dimensional distributed data detection (2D4) to estimate the object pixel likelihoods. We present a novel complexity-reduction technique that makes the algorithm suitable even for channels with support size as large as 5x5 object pixels. We compare the performance and …
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Single-Frequency Network Terrestrial Broadcasting with 5GNR Numerology
L'abstract è presente nell'allegato / the abstract is in the attachment
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Towards Multiclass Damage Detection and Localization using Limited Vibration Measurements
Traditional vibration-based damage detection methods provide structural health information based on their measured data (i.e., acceleration and displacement response). Over the last few decades, various model-based and time-frequency methods have shown great promises for damage identification and …
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Underwater communication via particle velocity channels : principles, channel models, and system design
… sensor can be used for detecting the transmitted data. In this dissertation, the concept of data detection and equalization in underwater particle velocity channels using acoustic vector sensors was developed. System equations for such a receiver were derived and channel equalization using these …
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Data-enhanced applications for power systems analysis
As power system data becomes more abundant, there is an increasing need for applications which can make appropriate use of this data to perform power system analysis tasks. Data provides opportunities for performing event detection, diagnostics, and forensics on the system in a way which has not …
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Packaging and Magnetic Integration for Reliable Switching of Paralleled SiC MOSFETs
… the developed model and that of the experimental data is 2%, significantly lower than the 28% difference between prediction result of commercial model and experimental data. Detection of internal cross-turn-on – Terminal current of a power module does not reflect the internal channel current due …
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Detekce stresu s využitím biologických a enviromentálních dat
… experimentální část byla zvolena multimodální databáze WESAD, která obsahuje synchronizovaná data z hrudního pásu RespiBAN a zápěstního zařízení Empatica E4. Praktická část práce zahrnuje předzpracování signálů pomocí Butterworthových filtrů a následnou extrakci 47 příznaků. Statistická analýza …