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Time-frequency analysis of time-varying spectra with application to rotorcraft testing

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2 Author(s)
Conn, T. ; NRTF Oper., EG&G Tech. Services, NM, USA ; Hamilton, J.

The time-dependent spectrum of rotating structures presents many significant challenges to radar cross section (RCS) test design, instrumentation parameter selection, signal-processing methodology, data analysis, and data interpretation. This paper presents a multidimensional signal-processing tool and a suite of associated data products, based on an efficiently scripted test design and execution strategy, which are responsive to the high throughput, high data volume requirements, and real-time data analysis demands associated with rotorcraft testing. We specifically address the NRTF's realization of a suite of spectral, cepstral, and statistical signal-processing tools supported by animation that facilitate near-real-time parametric data analysis and interpretation.

Published in:

Antennas and Propagation Magazine, IEEE  (Volume:47 ,  Issue: 2 )