Signal acquisition and processing for autonomous Space Shuttle Cargo Bay acoustic measurements (NASA G-313)
signalacquisitio00kueb.pdf (5.122Mb)Abstract
A narrowband trigonal acoustic transducer array and digital signal processing software are described in support of Space Shuttle Vibroacoustic experiment [NASA G-313]. The three co-planar, vibrationally isolated pressure-sensing microphones, the preamplifiers and the filters are designed to meet dynamic range and anti aliasing requirements for the digitization and processing of recorded flight data with one Hertz resolution within the 30-780 Hz baseband acoustic spectrum. The experiment is designed to operate in environments up to 160 dB SPL and provides modal recognition and directional information to identify resonances and localize high intensity sound sources within the ambient launch environment of the Space Shuttle Cargo Bay. Also included is a model of the empty Cargo Bay resonances and modal density calculations based on an adiabatic
perturbation of a rigid, right circular cylindrical enclosure.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
Related items
Showing items related by title, author, creator and subject.
-
SPC Toolbox: An Interactive MATLAB Package for Signal Modeling and Analysis and Communications
(Monterey, California. Naval Postgraduate School, 1993-10-15); NPS-EC-93-017This report presents the Signal Processing and Communications (SPC) software package. SPC is an interactive package designed to provide the user with a series of data manipulation tools which use MATLAB version 4 graphical ... -
Insider threat operations: is collaboration a key factor?
(Monterey, California: Naval Postgraduate School, 2016-03);Insider threats (InTh) are often unknown, inconspicuous, and hard to detect. To manage this problem effectively, big data must be shared, processed, and developed into threat indicators across multiple organizations and ... -
FIELD PROGRAMMABLE GATE ARRAY HIGH CAPACITY TECHNOLOGY FOR RADAR AND COUNTER-RADAR DRFM SIGNAL PROCESSING
(Monterey, CA; Naval Postgraduate School, 2018-06);Radar systems often use low power, continuous waveform radio frequency (RF) modulations and require high-speed adaptive signal processors to provide the necessary processing gain to detect small radar cross-section targets ...
