Acoustic Elements for Arrays, Streamers and Beacons.

BII-7140 Series Acoustic Elements for Arrays, Streamers, Beacons and Positioning.

The acoustic elements feature small size, low cost and easy integration, and are ready to be assembled in discrete arrays such as linear (broadside, end-fire, Mills Cross), planar and 3-D arrays to implement different acoustic applications. Depending on the operating frequency, these elements can be treated as Points, Lines or Rectangle Aperture in array signal processing. Beam steering, array focusing, bearing measurement, side-lobe suppression, and user-defined beam pattern (broad or narrow) can be achieved by complex weighting (Digital or FFT Beamforming) technique. Differential output and shielded twisted pair cable provide great EMI noise rejection over long cable. Multiple elements can be combined in series or parallel to make up an array distributing hundreds meters in field.
If your project needs very low acceleration sensitivity, Please refer to BII-7090 about acoustic elements with acceleration cancellation.

Typical Applications
Oil-filled Streamer Element/Towed Array/Seabed Array/Planar Array	Acoustic Beacons: Pingers, Tags, Remote Tracking; Acoustic Positioning.
Monitoring Seismic Sources/Airgun/Watergun	Array Focusing & Beam Steering, Vector Hydrophone Element
Passive Acoustic Monitoring System (PAM System), Sonobuoy	Marine Seismic Detector/Exploration/Borehole Seismic
Related Products
BII-7020 Line Array Hydrophone: 1Hz to 160kHz	BII-7090 Vibration Insensitive Hydrophone

Specification

Aperture Size (mm)	Document	Usable Frequency	Signal Type	Operating Depth	Beam Pattern
Φ4x4 Φ6x5 Φ9.5x8 6.5x6.5	Datasheet	1 Hz to 550 kHz	Differential Single-Ended	300 to 950m	Omnidirectional Toroidal Conical

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