{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T18:45:43Z","timestamp":1761677143233,"version":"build-2065373602"},"reference-count":15,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2022,9,8]],"date-time":"2022-09-08T00:00:00Z","timestamp":1662595200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Defense Industry Technology Center, Agency for Defense Development, South Korea"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Noise radar has become attractive owing to progress in hardware technology. Aside from the low probability of exploitation, the use of noise waveform is likely to grow due to its low interference features, especially in circumstances where multiple radars operate in the same band. In this study, we developed and tested a wideband noise radar for a ground-moving vehicle. It operates in the X-band with an instantaneous bandwidth of 1.5 GHz. The true time delay (TTD) was applied to correct the distortion of the beam pattern by the wide bandwidth, and the correlators were implemented by high-speed parallel processing using a field programmable gate array (FPGA). The outdoor experimental results were presented.<\/jats:p>","DOI":"10.3390\/rs14184489","type":"journal-article","created":{"date-parts":[[2022,9,8]],"date-time":"2022-09-08T20:50:27Z","timestamp":1662670227000},"page":"4489","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["A Wideband Noise Radar System Using a Phased Array with True Time Delay"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5118-5509","authenticated-orcid":false,"given":"Eunhee","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Defense System Engineering, Sejong University, 209 Neungdong-ro, Gwangjn-gu, Seoul 05006, Korea"}]},{"given":"In-kyu","family":"Kim","sequence":"additional","affiliation":[{"name":"Radio Communications Research Center, STX Engine Co., Ltd., Changwon 51574, Korea"}]},{"given":"Seungsu","family":"Han","sequence":"additional","affiliation":[{"name":"Radio Communications Research Center, STX Engine Co., Ltd., Changwon 51574, Korea"}]},{"given":"Jaemin","family":"Lee","sequence":"additional","affiliation":[{"name":"Radio Communications Research Center, STX Engine Co., Ltd., Changwon 51574, Korea"}]},{"given":"Sang-jin","family":"Shin","sequence":"additional","affiliation":[{"name":"Defense Industry Technology Center, Agency for Defense Development, Daejeon 34316, Korea"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1109\/MAES.2020.2990591","article-title":"Noise radar\u2014Overview and recent developments","volume":"35","author":"Savci","year":"2020","journal-title":"IEEE Aerosp. Electron. Syst. Mag."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1049\/iet-rsn:20080017","article-title":"Ka-band bistatic ground-based noise waveform SAR for short-range applications","volume":"2","author":"Lukin","year":"2008","journal-title":"IET Radar Sonar Navig."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Lukin, K.A., Mogila, A.A., Vyplavin, P.L., Palamarchuck, V.P., Zaets, N.K., and Zemlyany, O.V. (2008, January 2\u20135). Reconfigurable Ground Based Noise-Waveform-SAR for Short Range Applications. Proceedings of the 7th European Conference on Synthetic Aperture Radar, VDE, Friedrichshafen, Germany.","DOI":"10.1109\/IRS.2008.4585738"},{"key":"ref_4","unstructured":"PACE, and Phillip, E. (2009). Detecting and Classifying Low Probability of Intercept Radar, Artech House."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Yan, H., Boljanovic, V., and Cabric, D. (2019, January 3\u20136). Wideband millimeter-wave beam training with true-time-delay array architecture. Proceedings of the 53rd Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA.","DOI":"10.1109\/IEEECONF44664.2019.9048885"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"162","DOI":"10.1109\/MCOM.2008.4623722","article-title":"Integrated true-time-delay-based ultra-wideband array processing","volume":"46","author":"Hashemi","year":"2008","journal-title":"IEEE Commun. Mag."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Haupt, R.L. (May, January 29). Fitting time delay units in a large wideband corporate fed array. 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