Generalised wideband ambiguity function of a coherent ultrawideband random noise radar

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

A coherent ultrawideband (UWB) random noise radar system has been developed and field tested at the University of Nebraska-Lincoln (UNL). A heterodyne correlation technique based on a time-delayed and frequency-shifted replica of the transmit waveform is used to inject coherence within this system. The radar's combined range and range rate resolution characteristics were investigated using the generalised wideband ambiguity function. As in the narrowband random noise waveform case, range and range rate resolutions can be controlled independently, the former being inversely related to the transmit bandwidth, while the latter is inversely related to the bandwidth of the integrating filter. It is also shown that UWB waveforms are not suitable for accurate range rate estimation due to the extended Doppler-spread parameter, i.e. the product of the transmit bandwidth and the target range rate, unless the correlator is matched in the delay rate as well.

Original languageEnglish (US)
Pages (from-to)379-386
Number of pages8
JournalIEE Proceedings: Radar, Sonar and Navigation
Volume150
Issue number5
DOIs
StatePublished - Oct 1 2003

Fingerprint

Spurious signal noise
Ultra-wideband (UWB)
Bandwidth
Correlators
Radar systems
Radar

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

Cite this

@article{44edd834511340ab9bfeb75e79b2a022,
title = "Generalised wideband ambiguity function of a coherent ultrawideband random noise radar",
abstract = "A coherent ultrawideband (UWB) random noise radar system has been developed and field tested at the University of Nebraska-Lincoln (UNL). A heterodyne correlation technique based on a time-delayed and frequency-shifted replica of the transmit waveform is used to inject coherence within this system. The radar's combined range and range rate resolution characteristics were investigated using the generalised wideband ambiguity function. As in the narrowband random noise waveform case, range and range rate resolutions can be controlled independently, the former being inversely related to the transmit bandwidth, while the latter is inversely related to the bandwidth of the integrating filter. It is also shown that UWB waveforms are not suitable for accurate range rate estimation due to the extended Doppler-spread parameter, i.e. the product of the transmit bandwidth and the target range rate, unless the correlator is matched in the delay rate as well.",
author = "M. Dawood and Narayanan, {Ram Mohan}",
year = "2003",
month = "10",
day = "1",
doi = "10.1049/ip-rsn:20030702",
language = "English (US)",
volume = "150",
pages = "379--386",
journal = "IEE Proceedings: Radar, Sonar and Navigation",
issn = "1350-2395",
publisher = "Institute of Electrical Engineers",
number = "5",

}

Generalised wideband ambiguity function of a coherent ultrawideband random noise radar. / Dawood, M.; Narayanan, Ram Mohan.

In: IEE Proceedings: Radar, Sonar and Navigation, Vol. 150, No. 5, 01.10.2003, p. 379-386.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Generalised wideband ambiguity function of a coherent ultrawideband random noise radar

AU - Dawood, M.

AU - Narayanan, Ram Mohan

PY - 2003/10/1

Y1 - 2003/10/1

N2 - A coherent ultrawideband (UWB) random noise radar system has been developed and field tested at the University of Nebraska-Lincoln (UNL). A heterodyne correlation technique based on a time-delayed and frequency-shifted replica of the transmit waveform is used to inject coherence within this system. The radar's combined range and range rate resolution characteristics were investigated using the generalised wideband ambiguity function. As in the narrowband random noise waveform case, range and range rate resolutions can be controlled independently, the former being inversely related to the transmit bandwidth, while the latter is inversely related to the bandwidth of the integrating filter. It is also shown that UWB waveforms are not suitable for accurate range rate estimation due to the extended Doppler-spread parameter, i.e. the product of the transmit bandwidth and the target range rate, unless the correlator is matched in the delay rate as well.

AB - A coherent ultrawideband (UWB) random noise radar system has been developed and field tested at the University of Nebraska-Lincoln (UNL). A heterodyne correlation technique based on a time-delayed and frequency-shifted replica of the transmit waveform is used to inject coherence within this system. The radar's combined range and range rate resolution characteristics were investigated using the generalised wideband ambiguity function. As in the narrowband random noise waveform case, range and range rate resolutions can be controlled independently, the former being inversely related to the transmit bandwidth, while the latter is inversely related to the bandwidth of the integrating filter. It is also shown that UWB waveforms are not suitable for accurate range rate estimation due to the extended Doppler-spread parameter, i.e. the product of the transmit bandwidth and the target range rate, unless the correlator is matched in the delay rate as well.

UR - http://www.scopus.com/inward/record.url?scp=0345117088&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0345117088&partnerID=8YFLogxK

U2 - 10.1049/ip-rsn:20030702

DO - 10.1049/ip-rsn:20030702

M3 - Article

AN - SCOPUS:0345117088

VL - 150

SP - 379

EP - 386

JO - IEE Proceedings: Radar, Sonar and Navigation

JF - IEE Proceedings: Radar, Sonar and Navigation

SN - 1350-2395

IS - 5

ER -