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

Betül Yılmaz; Caner Özdemir

doi:10.1117/1.JRS.10.046012

18 November 2016 Design and prototype of radar sensor with Vivaldi linear array for through-wall radar imaging: an experimental study

Betül Yılmaz, Caner Özdemir

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 10, Issue 4, 046012 (November 2016). https://doi.org/10.1117/1.JRS.10.046012

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.

Citation Download Citation

Betül Yılmaz and Caner Özdemir "Design and prototype of radar sensor with Vivaldi linear array for through-wall radar imaging: an experimental study," Journal of Applied Remote Sensing 10(4), 046012 (18 November 2016). https://doi.org/10.1117/1.JRS.10.046012

Published: 18 November 2016

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