A Second Study of UWB Receiver Array Beamformer Output Images of Objects in a Room

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Authors
  1. Hung, E.K.L.
  2. Chamma, W.
  3. Gauthier, S.M.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN)
Abstract
Ultra-wideband (UWB) short pulse radars transmit (Tx) signals with pulse widths less than 1.0 nanosecond (ns) to detect targets. The short pulse widths give these radars many desirable properties that conventional narrowband radars do not have. These include high accuracy in range, improved target classification in types and classes, reduced clutter and multipath interference in the received echo signal, improved immunity to narrowband jamming and low probability of detection. It is well known that UWB radars can detect targets behind walls. Furthermore, if the radar has an array of receive (Rx) antennas, one can use beamforming with these Rx antennas to increase the accuracy of target direction estimates and improve the angular resolution of targets. In a previous study, the receive array beamformer output images of objects in a concrete room were examined. Here, we use simulation to study the following: 1) Effect of Rx array location on images, 2) Effect of concrete walls on images, and 3) Dependence of peak image power on range.

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Keywords
Nanosecond pulses;Short-pulse radar;UWB (Ultra WideBand);Rx array location;Short-pulse (SP) Radars;Through the wall surveillance;Through-wall imaging
Report Number
DRDC-OTTAWA-TM-2003-232 — Technical Memorandum
Date of publication
01 Aug 2003
Number of Pages
172
DSTKIM No
CA023532
CANDIS No
520863
Format(s):
Hardcopy;CD ROM

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