Development and application of radar reflectometer using micro to infrared waves

• Published in: Advances in physics: X Vol. 3; no. 1; p. 1472529
• Main Authors: Mase, A., Kogi, Y., Kuwahara, D., Nagayama, Y., Ito, N., Maruyama, T., Ikezi, H., Wang, X., Inutake, M., Tokuzawa, T., Kohagura, J., Yoshikawa, M., Shinohara, S., Suzuki, A., Sakai, F., Yamashika, M., Tobias, B. J., Muscatello, C., Ren, X., Chen, M., Domier, C. W., Luhmann, N. C.
• Format: Journal Article
• Language: English
• Published: United Kingdom Taylor & Francis 01.01.2018; Informa UK Limited; Taylor & Francis Group
• Subjects: 07.57.-c: Infrared to microwave instruments; 52.35.-q: Waves and instabilities in plasmas; 52.70.GW: Plasma diagnostics with microwave; 87.57.-s: Medical imaging; 93.85.-q: Instruments and techniques; 93.85.Pq: Remote sensing; biomedical measurement; Electromagnetic waves; imaging; plasma; radar reflectometry; remote sensing
• ISSN: 2374-6149; 2374-6149
• DOI: 10.1080/23746149.2018.1472529

Progress in microwave and millimeter-wave technologies has made possible advanced diagnostics for application to various fields, including radio astronomy, alien substance detection, plasma diagnostics, airborne and space-borne imaging radars called as synthetic aperture radars, and living body measurements. Transmission, reflection, scattering, and radiation processes of electromagnetic waves are utilized as diagnostic principles. The diagnostics are classified as active and passive systems. Specifically, active radar reflectometry has become of importance in various applications due to the possibility of high localization and accessibility of the measurements as well as the non-invasive nature of the systems. In this paper, recent development and application of radar reflectometers are described. The key words are profile reflectometry, fluctuation reflectometry, imaging radar (optics imaging and synthetic aperture imaging), and radio-optics fusion technology in order to improve the spatial resolution.