Title :
How narrow is narrowband?
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
fDate :
4/1/1998 12:00:00 AM
Abstract :
The “narrowband” assumption is often made in the analysis of array signal processing algorithms. The author provides a definition for the notion of narrowband, and the derivation of an expression which is useful in determining if a particular scenario qualifies as narrowband. The expression derived correctly predicts where the narrowband assumption fails for some super-resolution algorithms, the Cramer-Rao bound on angle estimation and the signal-to-interference plus noise performance of adaptive beamformers
Keywords :
adaptive estimation; adaptive signal processing; array signal processing; direction-of-arrival estimation; interference (signal); linear antenna arrays; noise; signal resolution; Cramer-Rao bound; SNR array gain; adaptive array signal processing; adaptive beamformers; adaptive estimation; angle estimation; angle of arrival; aperture; array signal processing algorithms; biased estimators; fractional bandwidth; narrowband assumption; signal-to-interference plus noise; super-resolution algorithms; uniform linear array;
Journal_Title :
Radar, Sonar and Navigation, IEE Proceedings -
DOI :
10.1049/ip-rsn:19981670
