High resolution ultrawideband wall penetrating radar

Abstract

Abstract-A high resolution ultra wideband radar prototype is developed for through the wall imaging. The frequency range of operation of the radar is selected to be 1.85 to 6 GHz in order to have high spatial resolution. Besides the hardware, we have also developed a custom image processing software which attacks the problem of false target recognition and rejection. In this paper, we present our prototype along with various experimental results such as detecting stationary targets and detecting respiratory activity of a human behind a 23 cm thick brick wall.

Design and measurement of compact tapered slot antenna for UWB microwave imaging radar

“…It should have the characteristics of compact size, large bandwidth, relatively high power gain, directional radiation pattern and fidelity of radiation waveform. In general, antennas suitable for UWB microwave imaging system can be divided into several types, such as the loaded bow-tie antenna [1] [2], the horn antenna [3], tapered slot antenna (TSA) [3] and so on. Among these antennas, the resistor-loaded bow-tie antenna has the disadvantage of lower power gain, and the size of the wideband horn antenna is usually too large.…”

Moving target detection using super‐resolution algorithms with an ultra wideband radar

“…Previously, the respiration activity of a human was successfully detected behind a 23-cm-thick brick wall using the difference of successive radar snapshots (Engin et al, 2007). Among many signal-processing algorithms for multiple source detection, multiple signal classification (MUSIC) proposed by Schmidt (1986) is a subspace-based detection algorithm (Swindlehurst and Kailath, 1993) and it has been shown to provide close estimates of directions of sources.…”

Wrapped ultra‐wide band radar sensor based on resistively loaded bow‐tie antenna for near zone sensing applications

“…In this regard, the impulse radar characterized by UWB pulse has widely utilized for near zone sensing applications. The applications in the vicinity of the targets can be included for not only medical applications, such as imaging of the breast tumor, imaging of the bleeding area for stroke, and assessment of bone mineral density, but also industrial applications such as ground‐penetrating radar (GPR), through‐wall penetrating radar, and foliage‐penetrating radar (FPR) …”

“…In this regard, the impulse radar characterized by UWB pulse has widely utilized for near zone sensing applications. The applications in the vicinity of the targets can be included for not only medical applications, such as imaging of the breast tumor, [2][3][4][5] imaging of the bleeding area for stroke, [6][7][8] and assessment of bone mineral density, [9][10][11] but also industrial applications such as ground-penetrating radar (GPR), [12][13][14][15] through-wall penetrating radar, 16,17 and foliage-penetrating radar (FPR). 18,19 For near zone sensing applications, the proposed antenna should radiate a short pulse with less distorted waveform to receive a clear echo pulse reflected by the target.…”