Ultrawideband normalized radar cross sections of distributed clutter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations


Theoretical and empirical formulas have been derived to compute the normalized radar cross section (NRCS) of distributed clutter targets for remote sensing applications. These formulas are usually parameterized in terms of the center frequency, and are therefore frequency-dependent. In recent years, high resolution measurements are being investigated for improved terrain characterization using ultrawideband (UWB) radar systems. In such cases, the NRCS value at the center frequency is generally used for calculations. This approximation does not cause too great an error when the system operates over a narrow frequency band, typically less than 10%. However, under UWB conditions, errors as large as a few decibels can occur under this assumption. We derive an expression for the UWB NRCS of distributed clutter as a function of the NRCS value at the center frequency and the fractional bandwidth. We show the application of these results in deducing the UWB signal-to-clutter ratio (SCR) for representative targets. It is seen that the UWB SCR increases with increasing fractional bandwidth initially, and then tends to level off at higher fractional bandwidths.

Original languageEnglish (US)
Title of host publication2012 IEEE Radar Conference
Subtitle of host publicationUbiquitous Radar, RADARCON 2012 - Conference Program
Number of pages5
StatePublished - Jul 30 2012
Event2012 IEEE Radar Conference: Ubiquitous Radar, RADARCON 2012 - Atlanta, GA, United States
Duration: May 7 2012May 11 2012

Publication series

NameIEEE National Radar Conference - Proceedings
ISSN (Print)1097-5659


Other2012 IEEE Radar Conference: Ubiquitous Radar, RADARCON 2012
Country/TerritoryUnited States
CityAtlanta, GA

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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