Evaluation of Standoff Multistatic 3-D Radar Imaging at 300 GHz

García-Rial, Federico; Montesano, Daniel; Pérez-Eijo, Lorena; Arias, Marcos; González-Valdés, Borja; Pino, A.G.; Grajal, Jesús

doi:10.1109/tthz.2019.2952258

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…In 2015, the Center for Information Processing and Telecommunications of the Universidad Politécnica de Madrid (UPM), Spain, developed a 300 GHz continuous-wave linear frequency modulation (CW-LFM) screening system based on a bifocal ellipsoidal reflector system (BEGRS) [16]. With a field of view of 50 cm × 90 cm at a standoff distance of 8 m, the system can acquire 3-D images in 0.5 s, with an azimuth resolution of 16 mm and a range resolution of 5.5 mm [17].…”

Section: Introductionmentioning

confidence: 99%

W-Band FMCW MIMO System for 3-D Imaging Based on Sparse Array

Shao,

Hu,

et al. 2024

Electronics

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Multiple-input multiple-output (MIMO) technology is widely used in the field of security imaging. However, existing imaging systems have shortcomings such as numerous array units, high hardware costs, and low imaging resolutions. In this paper, a sparse array-based frequency modulated continuous wave (FMCW) millimeter wave imaging system, operating in the W-band, is presented. In order to reduce the number of transceiver units of the system and lower the hardware cost, a linear sparse array with a periodic structure was designed using the MIMO technique. The system operates at 70~80 GHz, and the high operating frequency band and 10 GHz bandwidth provide good imaging resolution. The system consists of a one-dimensional linear array, a motion control system, and hardware for signal generation and image reconstruction. The channel calibration technique was used to eliminate inherent errors. The system combines mechanical and electrical scanning, and uses FMCW signals to extract distance information. The three-dimensional (3-D) fast imaging algorithm in the wave number domain was utilized to quickly process the detection data. The 3-D imaging of the target in the near-field was obtained, with an imaging resolution of 2 mm. The imaging ability of the system was verified through simulations and experiments.

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Section: Introductionmentioning

confidence: 99%

W-Band FMCW MIMO System for 3-D Imaging Based on Sparse Array

Shao,

Hu,

et al. 2024

Electronics

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“…T HE sub-terahertz (sub-THz) frequency band receives considerable attention in terms of broadband availability in a number of applications such as telecommunication, imaging, joint communication-sensing, and security [1]- [8]. In the past, sub-THz frequencies have been used in short range imaging systems including automotive and aerospace radars [9], [10].…”

Section: Introductionmentioning

confidence: 99%