Through-wall radar imaging using UWB noise waveforms

Research output: Contribution to journalArticle

74 Citations (Scopus)

Abstract

This paper examines the results of our research on the use of ultrawideband noise waveforms for imaging objects behind walls. The advantages of using thermally generated noise as a probing signal are introduced. The technique of heterodyne correlation used to inject coherence in the random noise probing signal and to collapse the wideband reflected signal into a single frequency are presented. Central to successful imaging through building walls is the characterization of the wideband propagation properties of wall materials and these are discussed. The basic concepts of synthetic aperture radar image formation using noise waveforms and the unique problems associated with the random nature of the transmit waveform are analyzed. We also address issues related to locating, detection, and tracking humans behind walls, using new tools for human activity characterization, namely the Hilbert-Huang Transform approach. The results indicate that noise radar technology combined with modern signal processing approaches is indeed a viable technique for covert high-resolution imaging of obscured stationary and moving targets.

Original languageEnglish (US)
Pages (from-to)659-678
Number of pages20
JournalJournal of the Franklin Institute
Volume345
Issue number6
DOIs
StatePublished - Sep 1 2008

Fingerprint

Radar Imaging
Radar imaging
Ultra-wideband (UWB)
Waveform
Imaging techniques
Radar
Imaging
Spurious signal noise
Hilbert-Huang Transform
High Resolution Imaging
Heterodyne
Moving Target
Random Noise
Synthetic Aperture
Synthetic aperture radar
Signal Processing
Signal processing
Image processing
Mathematical transformations
Propagation

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Signal Processing
  • Computer Networks and Communications
  • Applied Mathematics

Cite this

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abstract = "This paper examines the results of our research on the use of ultrawideband noise waveforms for imaging objects behind walls. The advantages of using thermally generated noise as a probing signal are introduced. The technique of heterodyne correlation used to inject coherence in the random noise probing signal and to collapse the wideband reflected signal into a single frequency are presented. Central to successful imaging through building walls is the characterization of the wideband propagation properties of wall materials and these are discussed. The basic concepts of synthetic aperture radar image formation using noise waveforms and the unique problems associated with the random nature of the transmit waveform are analyzed. We also address issues related to locating, detection, and tracking humans behind walls, using new tools for human activity characterization, namely the Hilbert-Huang Transform approach. The results indicate that noise radar technology combined with modern signal processing approaches is indeed a viable technique for covert high-resolution imaging of obscured stationary and moving targets.",
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Through-wall radar imaging using UWB noise waveforms. / Narayanan, Ram Mohan.

In: Journal of the Franklin Institute, Vol. 345, No. 6, 01.09.2008, p. 659-678.

Research output: Contribution to journalArticle

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