High-resolution 96-GHz (3 mm) passive millimeter-wave imaging system and the effect of scanning resolution on images

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dc.authoridSalman, Alp Oral/0000-0002-1708-6803
dc.authorwosidSalman, Alp Oral/F-8531-2018
dc.contributor.authorSalman, Alp Oral
dc.contributor.authorDuman, Mehmet
dc.date.accessioned2023-07-26T11:58:06Z
dc.date.available2023-07-26T11:58:06Z
dc.date.issued2022
dc.departmentDÜ, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.description.abstractA high-resolution 96-GHz (3 mm) passive millimeter-wave imaging system is constructed. The system has a 96-GHz radiometric receiver, which is placed on the focal point of a 50-cm diameter parabolic reflector designed and created. A specially written program for the system controls the antenna via control hardware in desired steps by a 2-axis positioner motor. A balance weight has been calculated and mounted to the rear of this parabolic reflector antenna to prevent possible damage to the rotor of the positioner motor due to the antenna's weight. The maximum field of view of the system is 120 deg in azimuth and 90 deg in elevation. The angular scan step can be varied from 0.1 deg to 1 deg. Although the system can shoot 1190 x 890 samples (pixels) images, which is close to the HD quality (1280 x 720 pixels) in the full field of view, the actual resolution of the image is limited by the antenna's beamwidth (BW). Some measurements were performed to investigate the effect of scanning steps on PMMW image quality for different angular scan steps. It is observed that the PMMW image scan with the smallest step gives a detailed image that is the closest to the scene's optical image as expected. Even though the angular scan step angle is less than half of the antenna's BWat Nyquist sampling, it is observed that the image quality still improves due to averaging effect of the received signals giving a better estimated S/N. The resolution and scan step values of our system are compared with that of some systems found in the literature and it is shown that ours has the highest value among them. This system can be used to obtain high-resolution images in remote sensing and other applications. (c) 2022 Society of Photo-Optical Instrumentation Engineers (SPIE)en_US
dc.description.sponsorshipKocaeli University; TUBITAK (The Scientific and Technological Research Council of Turkey)en_US
dc.description.sponsorshipThis study has been supported by Kocaeli University as a scientific research project. One of the authors, M. Duman, was supported also by TUBITAK (The Scientific and Technological Research Council of Turkey) with a doctoral scholarship. The authors declare that there is no conflict of interest.en_US
dc.identifier.doi10.1117/1.JRS.16.047501
dc.identifier.issn1931-3195
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85148683470en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1117/1.JRS.16.047501
dc.identifier.urihttps://hdl.handle.net/20.500.12684/13400
dc.identifier.volume16en_US
dc.identifier.wosWOS:000917345800047en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorDuman, Mehmet
dc.language.isoenen_US
dc.publisherSpie-Soc Photo-Optical Instrumentation Engineersen_US
dc.relation.ispartofJournal of Applied Remote Sensingen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmz$2023V1Guncelleme$en_US
dc.subjectPassive Millimeter-Wave Imaging; High-Resolution Images; Radiometric Receiver; Parabolic Reflector Antenna; Balance Weight; One-Way Torque Reductionen_US
dc.titleHigh-resolution 96-GHz (3 mm) passive millimeter-wave imaging system and the effect of scanning resolution on imagesen_US
dc.typeArticleen_US

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