Shore Cabled PAM

The PAM system may comprise a self contained electronics and battery unit or PAM data may be transmitted via cable or wireless link to a PAM receiver station and electronics unit for processing and monitoring. Static PAM has wide ranging application in marine sound monitoring from fixed locations and may form a network of static units for recording and monitor sounds in a spatial array.

Cable-To-Shore (Listening Station)

A cable-to-shore listening station provides real-time monitoring of coastal marine mammal activity and ambient sound levels using a hydrophone array and preamps mounted on a seabed frame. A cable extends to shore-side PAM electronics which supplies a mains power source (12V DC) to the hydrophones. PAM electronics are configured for remote access over the internet to enable control of configuration settings and to stream live audio and visual displays. A ‘listening station’ is an ideal solution for both near shore marine mammal and ambient sound monitoring and for extending conservation awareness and education of local marine mammal species through public engagement.

Autonomous Recording Systems (ARU)

An autonomous recording system (ARU) is a self contained battery powered acoustic sensor and ADC processor unit with data storage capacity for archival recordings of subsea sounds. The electronics processor functionality permits customisation of sample rate, system gain and duty cycling. ARU’s are deployed along with seabed moorings for archival storage of ambient and noise measurement recordings in wav format.

SM4M Submersible

ARU with 9 sample rate settings between 8 kHz and 96 kHz, rated to 150 m working depth, powered by 32 standard D size disposable alkaline batteries. Storage is by SD card up to 1 terabyte with a maximum duration of 60 days (@ 96 kHz). The hydrophone sensitivity is -165 dB re: 1V/uPA (standard acoustic hydrophone) or -240 dB re: 1 V/uPa High-SPL hydrophone to record and measure very high sound pressure levels produced by pile driving and air gun activities.

RS ORCA

A broadband underwater acoustic recorder fitted with a single wideband, omni-direction hydrophone (bandwidth 1-50,000 Hz, -3 dB points, nominal sensitivity= -200 dB re:1 uPa) with 35-dB preamplifier maximum depth rating of 3500m powered with 72 lithium D-cells. Integrated memory in SD card format with configurable recording, scheduling and duty cycling. Data can be recorded and processed automatically or streamed in real-time via ethernet.

Chelonia C-POD

Fully automated detection processes, very low false positive rates, high sensitivity, precise calibration, long running time, extreme robustness. C-POD detects toothed cetacean echo-location click trains and utilise fully integrated results through dedicated C-POD app and KERNO classifier.

Chelonia F-POD

Next generation from C-POD- improved electronics and software enhancements including automatic analysis of click waveform data and improved full waveform capture and FFT analysis. Improved detection and species classification, longer duration, scheduling and duty cycling.

Mooring Systems

Our mooring systems are custom designed to house a variety of static PAM recorders while providing a quiet, robust and secure mooring for underwater sound measurements and noise monitoring. Deployment of mooring arrangements are typically from a support vessel using available a-frame, winch and crane facilities to manoeuvre anchor weights and maintain control over mooring ropes and acoustic sensors during deployment and recovery.

Acoustic Release (Deep)

EdgeTech ARs in tandem release kit: Applications- deep water moorings, in-line moorings, underwater command and control, long life undersea deployments

Acoustic Release (Shallow)

VR2AR is a 69 kHz VR2Tx receiver and an acoustic release along with a V16-like transmitter which allows remote retrieval of deployed receivers and communication to the surface without retrieving the unit. The AR allows quick, reliable AR of deployed units, improves fine scale positioning (VPS) and AR status check to monitor health, tilt angle, range, temperature, battery life and memory of deployed VR2AR units – rated to 500m.

Surface Buoy Moorings

Our surface moorings are a customised suite of mooring lines, shackles, anchor weights, riser buoys, bungee chords, sub and surface tether buoys and IAIA compliant surface marker buoys including radar reflector and strobe lighting for use in deployment of acoustic autonomous recording systems (ARUs), C-PODS and F-PODS

Seabed Frame

The seabed frame is a tetrahedral steel frame with weighted feet for orientation on the seabed and a clamped gland to support a hydrophone which is typically cabled to shore or to a rising surface line and buoy. The seabed frame is suitable for coastal shore-cabled static hydrophone deployments for medium to long term monitoring of marine mammals and ambient sounds.

Digital Static PAM

Hydraq QQ1000

The Hydraq QQ1000 digital hydrophone combines acoustic and auxiliary sensors for increased accuracy in radiated and environmental noise measurement in the marine environmental. The primary acoustic sensor (nominal sensitivity -200 dB re 1V/uPa, bandwidth 5-115000 Hz, 24-bit res) incorporates a very low noise switched gain hydrophone amplifier with extended measurement bandwidth compared with similar low-noise hydrophones, while the three-axis accelerometer measures both orientation and hydrophone vibration, improving both low and high frequency measurements. Three-axis accelerometer is augmented with a magnetic compass, giving attitude and bearing while an accurate pressure sensor provides direct high resolution measurement of hydrophone depth. The Hydraq QQ1000 has wide-ranging application for marine mammal detection, marine noise measurement or measurement of vessel sound signatures.

CAPT Module

Standalone DAQ