Mr. Yanbo Zhang Profile

Yanbo Zhang

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Proceedings Article | 13 December 2024 Paper

Research on frequency domain three-dimensional imaging algorithm of millimeter wave radar

Yongsheng Liu, Yanbo Zhang, ZhongMin Wang, Yu Jiang, Tao Chen

Proceedings Volume 13495, 134950A (2024) https://doi.org/10.1117/12.3046111

KEYWORDS: Imaging systems, Radar, Radar imaging, Extremely high frequency, Image resolution, Detection and tracking algorithms, Image restoration, 3D image processing, 3D acquisition, Reconstruction algorithms

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Millimeter wave radar system is featured by low power consumption, whose strong penetration, owing to the short wavelength all-weather operation. With the rapid development of modern detection, the need of high-quality fast imaging algorithm urgent for security detection. In this paper ,a three-dimensional imaging algorithm on frequency domain is proposed to visualize the target. In detail, a linear frequency modulated continuous wave (LFMCW) radar with working frequency from 60GHz to 64GHz is used to acquire data on which the target image is reconstructed. The basic principles of linear frequency modulation continuous wave radar are introduced in the beginning, then, the echo signal model of the single input single output (SISO) imaging system and the procedures of imaging algorithm are deduced at length The scanning imaging experiment of the target is carried out to evaluate the proposed algorithm, ending up with fine contour of the target. Besides, the resolution of the actual image is obtained by analyzing the image contour. Finally, theoretical resolution is calculated on condition that center frequency equals 62GHz and aperture equals 20cm in both vertical and horizontal directions. The comparison suggests that the actual performance of radar is consistent with the expected one.

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