We have an interesting lecture coming soon!!
Title: Introduction to the use of Compressive Sensing in Modern Antenna Range Measurements.
Duration: 45 minutes + 15 minutes Q&A
Date: 18-12-2024 at 16:00 CET
Meeting URL: https://teams.microsoft.com/l/meetup-join/19%3ameeting_NWUyOGY3YmItNmQxOS00NmVlLTljZGItNDM5YzY5MWUxNzMz%40thread.v2/0?context=%7b%22Tid%22%3a%22ed303978-2983-4d6e-93a6-8b0072e25f31%22%2c%22Oid%22%3a%222172b77c-cd7f-44b3-978f-0e73b9b61a7b%22%7d
In this presentation, we provide an introduction to the use of CS and sparse sampling in antenna metrology before progressing to provide an overview of some of these newer CS based techniques, including addressing the optimal sampling strategy needed and presenting a statistical performance analysis of the reconstruction accuracy. We highlight some of the strengths, address some of the limitations and present ways in which these may be effectively overcome.
During recent years, compressive sensing (CS) and sparse sampling based techniques have been successfully deployed to tackle a wide variety of free-field measurement applications including radar imaging, cylindrical and spherical near-field measurements, far-field reflction suppression, and for array antenna measurement and diagnostics. For the case of measuring massive MIMO arrays, CS has been successfully used to dramaticaly reduce the number of measurements required to verify the antenna array's excitation in a production test environment using either spherical or planar acquisition geometries. These have largely followed the same general approach of creating the sparsity required by CS by using the total variation method which involves subtracting the measured far-field or near-field of the assumed defective test array antenna from that of a known reference "gold standard" array measured under identical conditions.
Professor Stuart Gregson has been working in the space, aerospace, and communications sectors for nearly thirty years, and as of 2019 is Director of Operations & Research at Next Phase Measurements. In 2017 he was promoted to honorary visiting professor in the School of Electronic Engineering and Computer Science at Queen Mary University of London. He received his BSc degree in Physics in 1994 and his MSc degree in Microwave Solid State Physics in 1995 both from the University of Portsmouth. He received his PhD degree in 2003 from Queen Mary University of London with near-field antenna measurements and statistical pattern recognition as his main subject areas. From his time with: Airbus, Leonardo, NSI-MI, NPL and Next Phase Measurements; Prof. Gregson has developed special experience with near-field antenna measurements, finite array mutual coupling, computational electromagnetics, installed antenna and radome performance prediction, compact antenna test range design & simulation, electromagnetic scattering, 5G OTA measurements and has published more than a hundred peer-reviewed research papers on these topics regularly contributing to and organizing industrial courses in these subject areas. At the end of 2007 he was the lead author of the research text, Principles of Planar Near-Field Antenna Measurements, and in 2014 he co-authored a second text, Theory and Practice of Modern Antenna Range Measurements, both of which are now in their second editions and are published by the IET in their Electromagnetic Waves Series. In 2008 and 2023 he received the AMTA Best Technical Paper Award, and in 2015 he presented the AMTA Sunday Short Course on Near-Field Measurement Error Analysis & Computational Electromagnetic Modeling, and currently organizes and presents the IET's annual short course on Modern Antenna Range Measurements. He is a Fellow of the Antenna Measurement Techniques Association, a Fellow of the Institution of Engineering and Technology, a Fellow of the Institute of Physics and is a chartered Engineer and Physicist. In 2018, Prof. Gregson was elected to the AMTA Board of Directors where he served first as Treasurer, then as Vice President and now as Chair of the AMTA Growth Committee. In 2022 he received the AMTA Outstanding Service Award.