Accuracy of a bistatic scattering substitution technique for calibration of focused receivers | Zendy

Kyle T. Rich | Zendy; T. Douglas Mast | Zendy

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Accuracy of a bistatic scattering substitution technique for calibration of focused receivers

Author(s) -

Kyle T. Rich,

T. Douglas Mast

Publication year - 2015

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.4935080

Subject(s) - beamwidth , hydrophone , calibration , bistatic radar , scattering , acoustics , optics , detector , physics , millimeter , backscatter (email) , materials science , computer science , antenna (radio) , radar , telecommunications , quantum mechanics , radar imaging , wireless

A recent method for calibrating single-element, focused passive cavitation detectors (PCD) compares bistatic scattering measurements by the PCD and a reference hydrophone. Here, effects of scatterer properties and PCD size on frequency-dependent receive calibration accuracy are investigated. Simulated scattering from silica and polystyrene spheres was compared for small hydrophone and spherically focused PCD receivers to assess the achievable calibration accuracy as a function of frequency, scatterer size, and PCD size. Good agreement between measurements was found when the scatterer diameter was sufficiently smaller than the focal beamwidth of the PCD; this relationship was dependent on the scatterer material. For conditions that result in significant disagreement between measurements, the numerical methods described here can be used to correct experimental calibrations.

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