摘要：Locating an object using a set of measurements collected from a number of spatially separated sensors often faces two challenges: the presence of outliers and the nonlinear relationship with the unknown. Outlier measurements degrade the localization accuracy considerably and the nonlinear relationship makes the solution finding difficult. This talk begins with a geometric approach to develop a minimum measurement positioning solution using elliptic measurements. The solution is in algebraic analytic form that requires the roots of a quadratic equation only. The minimum measurement solution establishes the intersection condition of the line of positions from two measurements and such condition enables the use of graph theory to derive an outlier detection scheme. A location estimator is next proposed that is based on the minimum measurement solution when there are more measurements than the number of unknown variables. Such an estimator reduces the nonlinear estimation problem to a simple algebraic solution that is computationally efficient, achieves the CRLB performance under Gaussian noise and can delay the thresholding effect.
报告人简介：Dominic K. C. Ho was born in Hong Kong. He received the B.Sc. degree with First Class Honors in Electronics and the Ph.D. degree in Electronic Engineering, both from the Chinese University of Hong Kong.
He was a research associate in the Royal Military College of Canada, a Scientific Staff at the Bell-Northern Research, Montreal, Canada, and a faculty in the ECE Department at the University of Saskatchewan, Saskatoon, Canada. He is currently a Professor in the EECS Department of the University of Missouri. His research interests are in sensor array processing, source localization, wireless communications and adaptive processing. He is an inventor of 22 patents in the United States, Canada, Europe and Asia on geolocation and signal processing for wireless communications.
Dr. Ho is a Fellow of the IEEE. He was a Technical Chair of the IEEE ICASSP2016. Dr. Ho served as the Past Chair, Chair and Vice-Chair of the Sensor Array and Multichannel (SAM) Technical Committee of the IEEE Signal Processing Society. He was an Associate Editor of the IEEE Transactions on Signal Processing and the IEEE Signal Processing Letters. He has received the Junior Faculty Research Award, the Senior Faculty Research Award and the Teaching Award from the College of Engineering at the University of Missouri. He is a recipient of the 25th Anniversary Outstanding Alumni Award from the Faculty of Engineering, the Chinese University of Hong Kong.