Systems and methods for predicting supersonic acoustic signatures
AssigneeLockheed Martin Corporation
InventorAnthony R. Pilon
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Abstract
A system for determining an acoustic signature of a device is disclosed that includes a computer processor operable to determine strength and location of shock wave sound signals based on propagation of sound waves generated by the device. The strength and location of the shock wave signals are modified due to dissipation and dispersion effects in a non-uniform atmosphere. The shock wave signals are separated into even and odd numbered signals, and oscillations in the signals are smoothed by averaging even and odd numbered shock signals.
Claims28
A system for determining an acoustic signature of a device, comprising:
- a computer processor configured with logic instructions operable to:
- determine strength and location of shock waves in acoustic signals based on nonlinear propagation of sound generated by the device;
- modify the strength and location of the shock waves due to dissipation and dispersion effects in a non-uniform atmosphere;
- separate the acoustic signals into even and odd numbered signals;
- and
- smooth oscillations in the signals by averaging the even and odd numbered signals.
A method for predicting the acoustic signature of a device, comprising:
- determining strength and location of shock sound signals based on propagation of acoustic signals generated by the device;
- modifying the strength and location of the acoustic signals due to dissipation and dispersion effects in a non-uniform atmosphere;
- and
- determining a first shock wave signal that pertains to a distorted acoustic signal, and a second shock wave signal that is interpolated from the distorted acoustic signal and used in dispersive calculations and spectral analysis.
A computer program product comprising:
- logic instructions on computer readable media operable to cause a computer processor to:
- determine strength and location of shock waves in acoustic signals based on nonlinear propagation of sound generated by a device;
- and
- determine a first shock wave signal that pertains to a distorted acoustic signal, and a second shock wave signal that is interpolated from the distorted acoustic signal and is used in dispersive calculations and spectral analysis.
Dependencies are inferred from the claim text.