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SiPLAB products:

AOB2 at sea

Acoustic Oceanographic Buoy (AOB)

The AOB is an integrated system composed of a piece of hardware to be deployed at sea (from a surface ship or aircraft) and a software utility that interfaces with the user at a remote location on real time. The AO-Buoy capabilities are as follows:

  • easy to handle system tending to the size, weight and autonomy of a standard sonobuoy
  • several depth modulable wideband acoustic and non-acoustic (thermistors, depth sensors, ...) channels
  • on the buoy GPS for time and location reference
  • on the buoy pre-processing for data reduction and analysis
  • fast remote wireless communications for data online monitoring and processing
  • online tracking of AO-Buoy position, status and data being acquired
  • real time data processing with the following scopes: water column temperature profiling via tomographic inversion, geo-acoustic bottom inversion, sound source detection, localization and tracking and underwater communications in the band up to 16 kHz.
Applications sought are: rapid environmental assessment (REA), bottom profiling and exploration, rapid submarine detection, localization and identification and communications with submerged targets (benthic labs, AUV's, subs, etc...).

Recent publications:

JASA logo Path specific Doppler compensation in time reversal communications, J. of Acoust. Soc. America - EL, Vol. 137(4), pp.302-306, March 2015 [PDF]

Elsevier logo Acoustic monitoring of O2 production of a seagrass meadow, J. of Exp. Marine Biology and Ecology, Vol. 464, pp.75-87, March 2015 [PDF]

Featured products:

Head wave propagation using Traceo

TRACEO

an efficient Gaussian beam 2D ray tracing model for underwater acoustic propagation, handling full bottom and water column range dependency, obstacle scattering and producing particle velocity outputs. See manual here and download free copy for Fortran. A C version for linux and/or Windows is available here and for GPU here.

Acoustic data sets:

soliton intimate 98

Acoustic data

is made available for experimentation and testing. Selected data sets of the Calcom'2010, Seagrass'2011 and RADAR'2007 are made available for download.