Microwave Synthetic Aperture Radar Imaging Using SFCW System for Buried Object Detection and Security Applications

Paul, Shubhadip; Chugh, Rahul; Akhtar, M. Jaleel

doi:10.1109/imarc45935.2019.9118706

Cited by 12 publications

(2 citation statements)

References 10 publications

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“…Detection of partially occluded objects is presented in [18] using UWB transceivers. In [19] through-the-wall object detection is carried out in the X-band, while in [20] through-the-wall object detection is carried out in the S-band with improved resolution using a two-step inverse scattering technique. However, in [17][18][19][20], the main focus is on target detection rather than image reconstruction.…”

Section: Introductionmentioning

confidence: 99%

Broadband frequency reconfigurable printed transceivers for microwave imaging systems

Malhotra¹,

Basu

2022

Int. J. Microw. Wireless Technol.

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In this paper, we propose a novel method for obtaining wideband spectral information of the target in microwave imaging systems by using broadband frequency reconfigurable printed transceivers. The proposed transceiver is composed of two embedded stacked microstrip antenna configurations operating in C-band (5.5–8.5 GHz) and X-band (8.5–11.5 GHz) with each having 3 GHz bandwidth. The transceiver switches between the two configurations (and thus frequency bands) using PIN diodes and collects response of the antenna in the presence of the target, in both the operating bands. This information is then combined to obtain wideband spectral information of the target from 5.5 to 11.5 GHz to achieve improved image reconstruction. The proposed reconfigurable transceiver has advantage over traditional broadband transceivers (those have slots/meandering at ground plane to achieve wideband response) that it has unidirectional radiation patterns throughout its band of operation. Hence the imaging system is implemented without the absorbers. This keeps the system compact and inconspicuous when installed for security applications. Here, a bistatic system is employed with two-dimensional target scanning performed in a real outdoor environment.

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Section: Introductionmentioning

confidence: 99%

Broadband frequency reconfigurable printed transceivers for microwave imaging systems

Malhotra¹,

Basu

2022

Int. J. Microw. Wireless Technol.

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“…In recent times, the design of compact, cost-effective, and simple system for real-time and portable near field subsurface microwave imaging is a challenging task. Near field microwave imaging techniques have been extensively adopted for many practical applications such as nondestructive testing, 1 the security inspection, 2,3 and the biomedical noninvasive probing. 4 The open-ended waveguides have been employed in the past for near field microwave imaging because of their simple structure and standard fabrication technique.…”

Section: Introductionmentioning

confidence: 99%

Near field microwave subsurface imaging using metasurface loaded planar antenna and synthetic aperture radar (SAR) technique

Paul

Akhtar

2021

Int J RF Microw Comput Aided Eng

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A novel near field subsurface microwave imaging scheme is proposed by using a high gain planar metasurface (MS) loaded slot antenna integrated with the synthetic aperture radar (SAR) algorithm. The antenna structure here comprises a slot antenna integrated with the proposed MS designed using the epsilon very large (EVL) unit cell. The proposed MS-based antenna structure has a very low profile of 0.033λ, with a measured peak gain of 5.5 dB at 6.47 GHz. After adding two more additional MS layers, the peak gain of the resultant antenna is 12.1 dB. The broadside gain and efficiency are significantly enhanced with the incorporation of the EVL MS. Afterward, the antenna structure, along with the vector network analyzer and the 2-D automated scanner is employed for the near field imaging of test media by recording the scattering data along the target area. A spatial subwavelength resolution with a typical value of about 0.43λ is obtained at 1λ standoff distance after applying the single frequency SAR algorithm to the measured raw scattering data. The overall applicability of the proposed low-profile MS loaded antenna integrated with the SAR algorithm is demonstrated for the near field subsurface microwave imaging of various metallic and dielectric targets with subwavelength spatial resolution in free space and lossy media.

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Microwave Doppler Radar for Monitoring of Vital Sign and Rotational Movement

Sadhukhan

Paul

Akhtar

2021

2021 IEEE Asia-Pacific Microwave Conference (APMC)

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Microwave Synthetic Aperture Radar Imaging Using SFCW System for Buried Object Detection and Security Applications

Cited by 12 publications

References 10 publications

Broadband frequency reconfigurable printed transceivers for microwave imaging systems

Broadband frequency reconfigurable printed transceivers for microwave imaging systems

Near field microwave subsurface imaging using metasurface loaded planar antenna and synthetic aperture radar (SAR) technique

Microwave Doppler Radar for Monitoring of Vital Sign and Rotational Movement

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