Signal enhancement for diagnostic signal analysis [rocket engines]

Author

Griffin, M.F. ; Tulpule, S. ; Finn, A.M.

Author_Institution

United Technol. Res. Center, East Hartford, CT, USA

fYear

1991

fDate

14-17 Apr 1991

Firstpage

3281

Abstract

Two time-frequency distributions of rocket engine test data are evaluated for rocket engine health monitoring. The data is enhanced using Cadzow´s (1988) signal enhancement technique based on composite property mappings. Following signal enhancement, the Wigner-Ville and Choi-Williams (1989) distributions are computed. Though the signal enhancement algorithm was able to reduce noise by 5-9 dB, on average, the time-frequency distributions were capable of discerning signal features without enhancement. Results are shown for data collected from the main combustion chamber of the Space Shuttle main engine

Keywords

aerospace engines; aerospace testing; rockets; signal processing; Choi-Williams distribution; Space Shuttle main engine; Wigner-Ville distribution; combustion chamber; diagnostic signal analysis; noise reduction; rocket engine health monitoring; rocket engine test data; signal enhancement; signal processing; time-frequency distributions; Combustion; Distributed computing; Engines; Monitoring; Noise reduction; Rockets; Signal analysis; Signal mapping; Testing; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on

Conference_Location

Toronto, Ont.

ISSN

1520-6149

Print_ISBN

0-7803-0003-3

Type

conf

DOI

10.1109/ICASSP.1991.150154

Filename

150154