Title :
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
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;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150154
