The Porpoise Locating Array Buoy (PLA-Buoy) is an autonomous marine sensor platform which uses multiple hydrophones to triangulate the position of vocalising harbour porpoises underwater. The buoy consists of a cRio controller which continuously records between 4-12 channels of acoustic data, sampled at 500kS/s. The data is saved to an external hard drive, either as .wav files or compressed X3 files. Serial data, e.g. a GPS can also be saved.

The programs available here are:
1) C++ code which runs on the cRio to record data. This is built around a modular framework allowing different functions to be implemented/disabled.
2) A tablet interface to show real time incoming data and control the buoy whilst it's deployed at sea.
3) A program to model array positions based on sensor information (e.g. depth and IMU readings). This allows users to integrate into PAMGUARD, which contains all functionality required to localise data collected from PLA Buoy.

Features

  • cRio 9068
  • cRio 9067
  • JavaFX
  • Marine Science

Project Samples

Model the positions of hydrophones from the PLA Buoy and other hydrophone array using our new array modelling program Interface for looking at pla_buoy data whilst it's out at sea. Extended magnetic calibration of IMU's used to model the arrays's orientation underwater

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Registered

2014-08-25
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