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Electromagnetic Vortex-based Radar Imaging using a Single Receiving Antenna: Theory and Experimental Results

ABSTRACT

Radar imaging based on electromagnetic vortex can achieve azimuth resolution without relative motion. The present paper investigates this imaging technique with the use of a single receiving antenna through theoretical analysis and experimental results. Continue reading

On Connectivity of Wireless Sensor Networks with Directional Antennas

ABSTRACT

In this paper, we investigate the network connectivity of wireless sensor networks with directional antennas. In particular, we establish a general framework to analyze the network connectivity while considering various antenna models and the Continue reading

Designing a Visual Front End in Audio-visual Automatic Speech Recognition System

ABSTRACT

Audio-visual automatic speech recognition (AVASR) is a speech recognition technique integrating audio and video signals as input. Traditional audio-only speech recognition system only uses acoustic information from an audio source. However the Continue reading

Supporting Human–Robot Interaction Based on the Level of Visual Focus of Attention

We propose a human-robot interaction approach for social robots that attracts and controls the attention of a target person depending on her/his current visual focus of attention. The system detects the Continue reading

Compressive Quantization for Scalable Cloud Radio Access Networks

With the proliferation of new mobile devices and applications, the demand for ubiquitous wireless services has increased dramatically in recent years. The explosive growth in the Continue reading

Radio Frequency Superconducting Quantum Interference Device Meta-atoms and Metamaterials: Experiment, Theory, and Analysis

Metamamterials are 1D, 2D or 3D arrays of articial atoms. The articial atoms, called “meta-atoms”, can be any component with tailorable electromagnetic properties, such as Continue reading

Nested Sampling and its Applications in Stable Compressive Covariance Estimation and Phase Retrieval with Near-Minimal Measurements

Compressed covariance sensing using quadratic samplers is gaining increasing interest in recent literature. Covariance matrix often plays the role of a sufficient statistic in many signal and Continue reading

FILOSE for Svenning: A Flow Sensing Bioinspired Robot

ABSTRACT

The trend of biomimetic underwater robots has emerged as a search for an alternative to traditional propeller-driven underwater vehicles. The drive of this trend, as in any other areas of bioinspired and biomimetic robotics, is the belief that Continue reading

Quaternionic Attitude Estimation for Robotic and Human Motion Tracking Using Sequential Monte Carlo Methods With von Mises-Fisher and Nonuniform Densities Simulations

In recent years, wireless positioning and tracking devices based on semiconductor micro electro-mechanical system (MEMS) sensors have successfully integrated into the Continue reading