Underwater Acoustic Modems

ORCA Acoustic Recorder

Multi-channel subsea acoustic recorder

The Orca is an extremely high-specification subsea acoustic recorder that accommodates up to 5 hydrophone channel inputs. It is suitable for real-time marine mammal and noise pollution monitoring, and noise source localisation.

RS Aqua

Portsmouth, GB

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Description

Orca is a high-specification underwater acoustic data recorder and signal processor. With multiple input channels and extremely high sampling rates, Orca can be used to capture, record, and process the richest underwater data sets possible in real-time.

Orca is straightforward and easy to configure, deploy and use. It’s also flexible enough for almost any underwater acoustic measurement scenario. Current applications for these instruments include underwater noise characterisation, marine mammal studies, underwater noise detection, and localisations.

Data can be recorded and processed autonomously or streamed in real-time via Ethernet.

The Orca product family is available in several different form factors, both supporting 5 synchronously sampled hydrophone inputs, with configurable sampling rates up to 384 kHz on all 5 channels. Whilst deployed the Orca can autonomously process sound pressure level (SPL) data to standards required by the EU Marine Strategy Framework Directive. The processed and raw data can be streamed over Ethernet or stored on up to 8 TB of internal solid-state memory (SD and SSD).

The Orca is available in 2 different sizes: the Orca-72D and the Orca-Ace. The larger Orca-72D houses 72 D-cell batteries (alkaline or lithium) and is suitable for long-term deployments of months or years. The Orca-Ace is much lighter and smaller and contains a rechargeable lithium battery for repeated deployments over days or weeks.

KEY FEATURES:

- Multiple selectable sample rates up to 384 kHz
- Real-time data streaming
- On board statistical noise analysis (for 24 or 48 kHz sample rates)

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Specifications

Physical Properties: Weight in air [kg]

29

Width [m]

0.2

Length [m]

0.76

Operating temperature: min. [°C]

-10

Operating temperature: max. [°C]

50

Housing material

Composite material, engineered plastic titanium

Operating properties: Depth rating {m}

200 m standard (Options for 750/2500 m available)

Stand-by mode

Y

General: Field of Use

ambient noise monitoring and characterisation, construction monitoring, marine mammal research

Year of latest version

2022

Area of Application

Defence, Marine Science, Ports, Construction, Offshore

Acoustic properties: Min. Operating frequency [kHz]

24

Max. Operating frequency [kHz]

384

Power supply and communication: Power Supply [V]

Alkaline or Lithium (internal); 7-30V DC (external)

Output interface

.wav

Other specifications: Cables

Ethernet

Additional capabilities

Configurable recording, on/off scheduling and duty cycling

Data storage

4TB Removable SD