Remote Sensing Applications and Decision Support

Design and prototype of radar sensor with Vivaldi linear array for through-wall radar imaging: an experimental study

[+] Author Affiliations
Betül Yılmaz, Caner Özdemir

Mersin University, Department of Electrical and Electronics Engineering, Ciftlikkoy, Mersin 33343, Turkey

J. Appl. Remote Sens. 10(4), 046012 (Nov 18, 2016). doi:10.1117/1.JRS.10.046012
History: Received March 28, 2016; Accepted October 27, 2016
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Abstract.  We present a radar sensor that was designed to detect and image moving objects/targets on the other side of a wall. The radar sensor was composed of a linear array of Vivaldi antenna elements, an radio frequency (RF) switch, a microcontroller unit, and an RF transceiver. For the linear array, a total of eight antenna elements were used as sensors in synthetic aperture radar (SAR) configuration in the cross-range axis to improve the resolution in this dimension. Design steps of Vivaldi antenna elements and the entire linear array were presented. After the design, the prototyping procedure and the details of the radar sensor were given. Through-the-wall radar (TWR) imaging experiments were performed for stationary and moving targets using the assembled sensor. The resultant TWR images after these experiments were presented. During the image formation, a back-projection type image focusing algorithm was implemented and applied to increase the signal-to-noise ratio of the raw images. The constructed radar images demonstrated that our radar sensor could successfully detect and image both stationary and moving targets on the other side of the wall.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Topics

Antennas ; Radar ; Sensors

Citation

Betül Yılmaz and Caner Özdemir
"Design and prototype of radar sensor with Vivaldi linear array for through-wall radar imaging: an experimental study", J. Appl. Remote Sens. 10(4), 046012 (Nov 18, 2016). ; http://dx.doi.org/10.1117/1.JRS.10.046012


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