The development of new FMCW GPR system

Abstract

PreviousNext No Access19th International Conference on Ground Penetrating RadarThe development of new FMCW GPR systemAuthors: Toshimitsu NozuShigeji YamadaKiyoshi YoshidaToshimune ImaiEichiro NishiyamaToshimitsu NozuKawasaki Geological Engineering Co., Ltd.Search for more papers by this author, Shigeji YamadaKawasaki Geological Engineering Co., Ltd.Search for more papers by this author, Kiyoshi YoshidaKawasaki Geological Engineering Co., Ltd.Search for more papers by this author, Toshimune ImaiKawasaki Geological Engineering Co., Ltd.Search for more papers by this author, and Eichiro NishiyamaKawasaki Geological Engineering Co., Ltd.Search for more papers by this authorhttps://doi.org/10.1190/gpr2022-078.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract In recent years, GPR is used as a road maintenance instrument for detecting underground cavities. The pulse radar used in GPR can only investigate cavities within a depth of 3m. However, sometimes the GPR needs to detect cavities deeper than 3m. For this purpose, FMCW is used. We have developed a new FMCW radar system that can detect cavities deeper than 8m. This paper will compare our new FMCW radar with the old one. The new FMCW radar uses a beat signal as the reflected signal whereas, the old FMCW radar uses a phase signal as the reflected signal. The new FMCW radar has an important feature that enables it to detect underground cavities while the antenna is mounted on a moving vehicle. Keywords: ground-penetrating radar (GPR), signal processing, amplitude, resolution, noise Permalink: https://doi.org/10.1190/gpr2022-078.1FiguresReferencesRelatedDetails 19th International Conference on Ground Penetrating RadarISSN (online):2159-6832Copyright: 2022 Pages: 166 publication data© 2022 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 13 Oct 2022 CITATION INFORMATION Toshimitsu Nozu, Shigeji Yamada, Kiyoshi Yoshida, Toshimune Imai, and Eichiro Nishiyama, (2022), "The development of new FMCW GPR system," SEG Global Meeting Abstracts : 67-70. https://doi.org/10.1190/gpr2022-078.1 Plain-Language Summary Keywordsground-penetrating radar (GPR)signal processingamplituderesolutionnoise PDF DownloadLoading ...