{"title":"光子阶跃频率强度调制梳状太赫兹雷达","authors":"Vladyslav Cherniak;Kevin Kolpatzeck;Jan C. Balzer","doi":"10.1109/JMW.2025.3544017","DOIUrl":null,"url":null,"abstract":"This work presents an ultra-high repetition rate (UHRR) terahertz time-domain spectroscopy (THz-TDS) system with a unique capability – it functions as a close-range pulsed radar with micrometer precision and an unambiguous range (UR) of about 3 mm. To extend the UR, a stepped-frequency intensity modulated comb (s-FIMC) is introduced. This results in a hybrid radar system, where s-FIMC is employed to determine the distance to a target, while the THz-TDS signal is utilized to monitor changes in the target's position with micrometer precision. With a 10 GHz modulation bandwidth, a resolution of 15 mm, and a range accuracy of <inline-formula><tex-math>$\\pm$</tex-math></inline-formula>1.47 mm are achieved in s-FIMC mode. In the TDS mode, a range accuracy of <inline-formula><tex-math>$\\pm$</tex-math></inline-formula>15 <inline-formula><tex-math>$\\rm {\\mu }$</tex-math></inline-formula>m is demonstrated.","PeriodicalId":93296,"journal":{"name":"IEEE journal of microwaves","volume":"5 2","pages":"399-408"},"PeriodicalIF":6.9000,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10931045","citationCount":"0","resultStr":"{\"title\":\"Photonic Stepped-Frequency Intensity Modulated Comb Terahertz Radar\",\"authors\":\"Vladyslav Cherniak;Kevin Kolpatzeck;Jan C. Balzer\",\"doi\":\"10.1109/JMW.2025.3544017\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This work presents an ultra-high repetition rate (UHRR) terahertz time-domain spectroscopy (THz-TDS) system with a unique capability – it functions as a close-range pulsed radar with micrometer precision and an unambiguous range (UR) of about 3 mm. To extend the UR, a stepped-frequency intensity modulated comb (s-FIMC) is introduced. This results in a hybrid radar system, where s-FIMC is employed to determine the distance to a target, while the THz-TDS signal is utilized to monitor changes in the target's position with micrometer precision. With a 10 GHz modulation bandwidth, a resolution of 15 mm, and a range accuracy of <inline-formula><tex-math>$\\\\pm$</tex-math></inline-formula>1.47 mm are achieved in s-FIMC mode. In the TDS mode, a range accuracy of <inline-formula><tex-math>$\\\\pm$</tex-math></inline-formula>15 <inline-formula><tex-math>$\\\\rm {\\\\mu }$</tex-math></inline-formula>m is demonstrated.\",\"PeriodicalId\":93296,\"journal\":{\"name\":\"IEEE journal of microwaves\",\"volume\":\"5 2\",\"pages\":\"399-408\"},\"PeriodicalIF\":6.9000,\"publicationDate\":\"2025-03-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10931045\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE journal of microwaves\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10931045/\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE journal of microwaves","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10931045/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
This work presents an ultra-high repetition rate (UHRR) terahertz time-domain spectroscopy (THz-TDS) system with a unique capability – it functions as a close-range pulsed radar with micrometer precision and an unambiguous range (UR) of about 3 mm. To extend the UR, a stepped-frequency intensity modulated comb (s-FIMC) is introduced. This results in a hybrid radar system, where s-FIMC is employed to determine the distance to a target, while the THz-TDS signal is utilized to monitor changes in the target's position with micrometer precision. With a 10 GHz modulation bandwidth, a resolution of 15 mm, and a range accuracy of $\pm$1.47 mm are achieved in s-FIMC mode. In the TDS mode, a range accuracy of $\pm$15 $\rm {\mu }$m is demonstrated.
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