volume | PIER Journals

2014-08-23

Noise Removal Technique in Near-Field Millimeter-Wave Cylindrical Scanning Imaging System

Xin Wen,

Dr. Xin Wen

Beijing Institute of Radio Metrology and Measurement

China

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Feng Nian,

Dr. Feng Nian

National Key Laboratory of Metrology and Calibration Technology

China

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Yujie Yang,

Dr. Yujie Yang

Beijing Inst Radio Metrol & Measurement

China

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Keming Fen

Dr. Keming Fen

Science and Technology on Metrology and Calibration Laboratory

China

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Progress In Electromagnetics Research M, Vol. 38, 83-89, 2014

doi:10.2528/PIERM14052906

Abstract

The accuracy of scattering measurements in near-field millimeter-wave cylindrical scanning imaging system is often degraded by the contamination from additive noise and clutter. Thus, efficient noise removal technique is necessary to achieve accuracy improvement. This paper proposes an independent component analysis denoising algorithm, which relies on the assumption of statistical independence of the sources, where high order statistical properties are used. In the algorithm, the virtual noise components are incorporated into the independent component analysis model, which expands original one-dimensional observation to virtual multi-dimensional observations. The computationally efficient sources estimation technique is presented, based of joint diagonalization of fourth order cumulant matrix. The high speed millimeter-wave near-field cylinder scanning imaging system is set up to verify the denoising results of range profiles, three-dimensional scatter intensity and two-dimensional projection images. The results indicate both the feasibility and validity of the proposed denoising algorithm to be applied in the near-field millimeter-wave cylindrical scanning imaging system.

Citation

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Xin Wen, Feng Nian, Yujie Yang, and Keming Fen, "Noise Removal Technique in Near-Field Millimeter-Wave Cylindrical Scanning Imaging System," Progress In Electromagnetics Research M, Vol. 38, 83-89, 2014.
doi:10.2528/PIERM14052906

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