Quality factor estimation of a reverberant cavity

A method comprises collecting a data set of field characterization measurements at a location inside a reverberant cavity (210) excited by signals having multiple discrete electromagnetic frequencies; and performing a number (n) of circular shifts on the data set by a frequency step (deltaf) and com...

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Bibliographische Detailangaben
Hauptverfasser:	JASON P. BOMMER, GENEVIEVE J. HANKINS, LEWIS, DENNIS M
Format:	Patent
Sprache:	eng
Schlagworte:	AIRCRAFT AVIATION CALCULATING COMPUTING COSMONAUTICS COUNTING DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING ORREPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLYADAPTED FOR USE IN CONNECTION WITH AIRCRAFT HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFTCOMPONENTS, NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS TRANSMISSION TRANSPORTING
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Beschreibung
Zusammenfassung:	A method comprises collecting a data set of field characterization measurements at a location inside a reverberant cavity (210) excited by signals having multiple discrete electromagnetic frequencies; and performing a number (n) of circular shifts on the data set by a frequency step (deltaf) and computing a covariance-based coefficient at each shift until the coefficient indicates a lack of correlation. The method further comprises computing a quality factor (Q) of the reverberant cavity (210) as fc/(deltaf*n), wherein fc is center frequency of the data set.