Design, performance, and applications of a coherent ultra-wideband random noise radar

Ram Mohan Narayanan, Yi Xu, Paul D. Hoffmeyer, John O. Curtis

Research output: Contribution to journalArticle

114 Citations (Scopus)

Abstract

A novel coherent ultra-wideband radar system operating in the 1- to 2-GHz frequency range has been developed recently at the University of Nebraska. The radar system transmits white Gaussian noise. Detection and localization of buried objects is accomplished by correlating the reflected waveform with a time-delayed replica of the transmitted waveform. Broadband dual-polarized log-periodic antennas are used for transmission and reception. A unique signal-processing scheme is used to inject coherence into the system by frequency translation of the ultrawideband signal by a coherent 160-MHz phase-locked source prior to performing heterodyne correlation. The system coherence allows the extraction of a target's polarimetric amplitude and phase characteristics. This paper describes the unique design features of the radar system, develops the theoretical foundations of noise polarimetry, provides experimental evidence of the polarimetric and resolution capabilities of the system, and demonstrates results obtained in subsurface probing applications.

Original languageEnglish (US)
Pages (from-to)1855-1869
Number of pages15
JournalOptical Engineering
Volume37
Issue number6
DOIs
StatePublished - Jan 1 1998

Fingerprint

Spurious signal noise
Radar systems
random noise
Ultra-wideband (UWB)
radar
broadband
waveforms
log periodic antennas
Log periodic antennas
Polarimeters
frequency converters
polarimetry
replicas
signal processing
Signal processing
frequency ranges

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

Cite this

Narayanan, Ram Mohan ; Xu, Yi ; Hoffmeyer, Paul D. ; Curtis, John O. / Design, performance, and applications of a coherent ultra-wideband random noise radar. In: Optical Engineering. 1998 ; Vol. 37, No. 6. pp. 1855-1869.
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Design, performance, and applications of a coherent ultra-wideband random noise radar. / Narayanan, Ram Mohan; Xu, Yi; Hoffmeyer, Paul D.; Curtis, John O.

In: Optical Engineering, Vol. 37, No. 6, 01.01.1998, p. 1855-1869.

Research output: Contribution to journalArticle

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