Line (Linear) Array Hydrophone

A BII’s line (linear) array hydrophone averages sound pressures along its length as a spatial filter, and utilize built-in amplitude shading/weighting to reduce side-lobes. Its toroidal directivity response makes it a great gear to detect and search underwater sound sources omnidirectionally with its main lobe and reject the noises in other directions. Smooth domes and housing reduce interferences to acoustic field under test.
Split-aperture correlators based on line arrays implement target angle estimation. The narrow beamwidth along the length provide direction information of the sound sources and reject the unwanted noises coming from other directions, the omnidirectional response cross the length covers large area to search. Two or four line arrays can be used to set up "T" or "+" type cross array functioning as a Target Angle Estimation System with Mills Cross techniques which provides accurate bearing information of sound sources.
The hydrophone body has streamlined hemispherical domes which minimize drag forces and hydrodynamic noises caused by the hydrophone in motion or the flow past the hydrophone.
For applications of beam steering (Digital or FFT Beamforming) , please deploy multiple BII7021 arrays, BII7010 hydrophones, or BII7140 hydrophones to configure discrete linear or planar arrays.

BII7020 Series Line (Linear) Array Hydrophone: Toroidal Directivity Response.

Suggested Application
Towed Array, Sonobuoy, PAM System. Direction-finding Sonar System, Target Angle Estimation Systems.	Tracking of Acoustic Tags, Locating Marker/Pinger/Beacon/Transponder. Acoustic Pipeline Leak Detection, Directional Communication.
Related Products
BII7010 hydrophone Low Noise Broadband Hydrophone	BII7140 Hydrophone Acoustic Element for Array/Streamer/Beacon

Line (Linear) Array Hydrophone:	BII7020 Series Line (Linear) Array Hydrophone

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