Keynote Address III Advancements of microwave diagnostics and their industrial applications

Summary form only given. Progress of microwave and millimeter-wave technologies has made possible advanced diagnostics for application to various fields, such as, plasma diagnostics, radio astronomy, alien substance detection, airborne and spaceborne imaging radars called as synthetic aperture radars, living body measurements, and automobile radars for collision avoidance and adaptive cruise control. Transmission, reflection, scattering, and radiation processes of electromagnetic waves are utilized as diagnostic tools which are classified to active and passive diagnostic systems. In the active system, microwave/millimeter-wave reflectometry (radar) is thought to be essential and most prospective, since it has higher perception accuracy and robustness under the conditions of rain, fog, and snow than conventional technique using laser radar devices. In this report we focus on the technology advances in microwave/millimeter-wave region and the application results of diagnostic systems, specifically by use of imaging technique and ultra-wide band radar technique.