See-Through-Wall Imaging Using Ultra Wideband Short-Pulse Radar System

2005 ◽  
Author(s):  
Yunqiang Yang ◽  
A.E. Fathy
Keyword(s):  
Short Pulse ◽  
Radar System ◽  
Ultra Wideband ◽  
Pulse Radar ◽  
Wall Imaging

A New Ultra Wideband, Short Pulse, Radar System for Mine Detection

2002 ◽  
pp. 175-182 ◽  
Author(s):  
F. Gallais ◽  
V. Mallepeyre ◽  
Y. Imbs ◽  
B. Beillard ◽  
J. Andrieu ◽  
...  
Keyword(s):  
Short Pulse ◽  
Radar System ◽  
Ultra Wideband ◽  
Mine Detection ◽  
Pulse Radar

scholarly journals Design and Analysis of a UWB MIMO Radar System with Miniaturized Vivaldi Antenna for Through-Wall Imaging

2019 ◽  
Vol 11 (16) ◽  
pp. 1867 ◽  
Author(s):  
Zhipeng Hu ◽  
Zhaofa Zeng ◽  
Kun Wang ◽  
Weike Feng ◽  
Jianmin Zhang ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Mimo Radar ◽  
Radar System ◽  
Ultra Wideband ◽  
Concrete Wall ◽  
Range Resolution ◽  
Imaging Model ◽  
Data Capturing ◽  
Vivaldi Antenna ◽  
Wall Imaging

The ultra-wideband (UWB) multi-input multi-output (MIMO) radar technique is playing a more and more important role in the application of through-wall detection because of its high resolution, lower antenna requirements, and efficient data capturing ability. This paper develops a novel UWB MIMO radar system using a stepped-frequency continuous-wave (SFCW) signal, which is designed to detect human targets behind the regular brick and concrete wall. In order to balance high range resolution and wall-penetration depth, a novel miniaturized Vivaldi antenna with desired bandwidth of 0.5–2.5 GHz was designed, simulated, manufactured, and successfully used in through-wall imaging. To suppress the artifacts in the focused image and reduce the computing complexity, the cross-correlation-based time domain back projection (CC-TDBP) algorithm was developed. In addition, a through-wall imaging model was established, based on which the effects of the wall on the refraction of electromagnetic (EM) waves and the reduction of velocity are compensated. Finally, different experiments were conducted for multiple stationary targets utilizing the designed radar system, and the improved BP-based algorithms are applied to focus the targets behind the wall more accurately. The reconstructed two-dimensional (2D) images illustrate that the designed MIMO radar system can successfully detect and image human targets in the air and behind the wall.

Borehole radar applied to characterization of fracture zones

1989 ◽  
Vol 20 (2) ◽  
pp. 149 ◽  
Author(s):  
O. Olsson ◽  
L. Falk ◽  
O. Forslund ◽  
B. Niva ◽  
E. Sandberg
Keyword(s):  
Granitic Rock ◽  
Short Pulse ◽  
3D Models ◽  
Radar System ◽  
Fracture Zones ◽  
Borehole Logging ◽  
Single Hole ◽  
Pulse Radar ◽  
Borehole Radar

A new short-pulse radar system (RAMAC) developed by ABEM AB has now been in operation for three years during which more than 100 km of borehole logging has been performed. The bulk of the surveys have been in granites and gneisses.The RAMAC system operates at centre frequencies in the interval 20 to 60 MHz. At those frequencies single-hole reflection ranges of 50 to 150 m are normally obtained in gneissic and granitic rock. Cross-hole ranges have in some cases exceeded 300 m. The large probing range in combination with resolution of the order of a few metres makes borehole radar a unique technique for investigation of fracture zones in crystalline rock.Case histories illustrate application of the RAMAC system in three different configurations (single-hole reflection, cross-hole reflection, and cross-hole tomography) and demonstrate how combination of these three can yield consistent 3D models of fracture zones and other structures.

scholarly journals Antenna Parts and Waveguide Transmission Line of Short Pulse Radar System Design

2014 ◽  
Vol 14 (12) ◽  
Author(s):  
Maxim Golubtsov ◽  
Vasily Ovechkin ◽  
Natalia Fadeeva ◽  
Alexey Parschikov ◽  
Arkady Borisov
Keyword(s):  
Transmission Line ◽  
System Design ◽  
Short Pulse ◽  
Radar System ◽  
Pulse Radar ◽  
Waveguide Transmission

Time-domain imaging of airborne targets using ultra-wideband or short-pulse radar

1995 ◽  
Vol 43 (3) ◽  
pp. 327-329 ◽  
Author(s):  
E.J. Rothwell ◽  
K.M. Chen ◽  
D.P. Nyquist ◽  
J.E. Ross
Keyword(s):  
Time Domain ◽  
Short Pulse ◽  
Ultra Wideband ◽  
Pulse Radar
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