Acoustic Surveillance - GeoSpectrum Technologies Inc https://geospectrum.ca/product-tag/acoustic-surveillance/ Specialists in underwater acoustic transducers and systems Tue, 18 Aug 2026 12:58:20 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.4 Jaeger USV https://geospectrum.ca/product/jaeger-usv/ Thu, 04 Dec 2025 19:37:27 +0000 https://geospectrum.ca/?post_type=product&p=10909 The only vessel of its kind that integrates all oper­ational modes on one platform. Featuring modular and switchable mission payload suites with advanced sonars and subsystems, the fully autonomous Jaeger USV can be deployed for multiple crewed and un­crewed missions. The Jaeger USV incorporates mine counter measures (MCM), anti-submarine warfare (ASW), maritime security (MS), electronic warfare (EW) and other advanced systems and technologies. Jaeger USV can operate at cruising speed for more than 4 full days at sea and is equipped to perform extensive missions.

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Material
Aluminum, Composite
Length
12 – 20 m
Draft
0.8 m
Beam
3.3 m
Useful Payload
2,500 – 10,500 kg
Propulsion
Propellers and Thrusters
Diesel Engines
2 x 425 hp (Cummins)
Top Speed & Endurance
25 kt, > 4 – 8 days
Features
  • Advanced sonar technologies and systems
  • Line-of-site and SATCOM data links
  • Modular payloads
  • Mission control system

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]]> Auk Dipping Sonar https://geospectrum.ca/product/auk-dipping-sonar/ Thu, 06 Jun 2024 11:51:31 +0000 https://geospectrum.ca/?post_type=product&p=8572 Auk is a high power, low frequency dipping sonar system purpose-built by GTI specifically for operating from small to large unmanned surface vessels (USVs). Auk is designed for littoral operations and deep water as part of a multistatic system for defence and surveillance.

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The system provides leading edge sonar performance that rivals the best helicopter dipping sonars on the market, fully integrated unmanned operation capability, and rugged construction for reliable operation and simple maintenance in the marine environment.

Advantages over Adapted helicopter dipping sonars due to USV-dedicated design:

  • Capable of sustained acoustic transmissions at both high power and high duty cycle (no need to wait and re-charge a power bank in the SU).
  • System is designed specifically for an extended lifetime operating in the harsh marine environment:
    • Equipment is designed for naval shipboard shock and vibration.
    • On-deck components and materials are selected to withstand the elements, water loading, and corrosion of a small vessel’s open deck environment at sea.
  • Simplified interfaces instead of specialized, aircraft-specific interfaces, simplifying system components and maintenance.
Active Frequency
VLF
Transmit
Omni
Source Level
High Power
Max Operational Depth
500 m
Features
  • Cylindrical body housing transmit and receive acoustic arrays, as well as telemetry, non acoustic sensors, and associated components
  • Collapsing design provides a low-drag compact form factor for deployment and recovery, but expands for operation to provide large, high-performance acoustic arrays
    • Transmit array deploys vertically below body
    • Receive array staves deploys radially out from body
  • Simplified SU requirements enable a reliable design:
    • SU contains no power storage or amplifier components (replaced with dry end amplifier)
    • Simplified, rugged actuation mechanisms

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]]> TRUVIEW https://geospectrum.ca/product/truview/ Thu, 15 Jun 2023 14:29:09 +0000 https://geospectrum.ca/?post_type=product&p=7508 Rapid Acoustic Data Processing

TruView is a turnkey system to accept, process, and analyze sonar data from multiple and diversified sources, providing an acoustic data centre capability.

The system enables the operator/analyst to run recorded sonar data files at faster than real-time speed to review, analyze and exploit the data, enabling acoustic intelligence extraction and supporting acoustic threat databases.

TruView is the heart of the Canadian Navy’s Acoustic Data Analysis Center (ADAC).

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Mine Large Data Sets Effectively: The TruView Rapid Processing and Analysis (RPA) system provides a truly generic sonar capability that enables operators to efficiently and effectively mine large data sets for valuable intelligence.

Diversified Deployment: TruView can be deployed on a range of computing platforms with varied CPU performance and display sizes to trade off portability with power and storage. Examples include a laptop, rack-mounted server and console, and a fixed server installation with two large monitors.

Features

  • Rapid data processing at many times real time (8x – 100x real time have been demonstrated)
  • Process multiple resolutions and modes in parallel (default is 12)
  • Optimize processing for submarines, surface ships or a wide variety of marine mammal vocalizations and transients—long and short
  • Software runs on commercial-off-the-shelf hardware
  • Utilize turn-key configurations for towed arrays, DIFAR sonobuoys (with colour bearing displays) and omnidirectional sensors
  • Process data from virtually any passive sonar system including towed/linear arrays, hull-mounted sonar/cylindrical arrays, DIFAR sonobuoys, and broadband hydrophones
  • Receive sonar data in a variety of standardized formats or via purpose-built plugins
  • Perform concurrent narrowband, broadband, transient  and DEMON processing
  • Select from optimized processing configurations for detection of submarines, surface ships, marine mammal vocalization and transients
  • Analyze harmonic relationships to support classification and intelligence extraction

Options

  • Variants of this system design are available for real-time manned passive sonar, active sonar, or embedded low-power autonomous processing.

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]]> C-Bass https://geospectrum.ca/product/c-bass/ Thu, 20 Apr 2023 17:25:23 +0000 https://geospectrum.ca/?post_type=product&p=7307 GeoSpectrum’s C-BASS transducers are suitable for a wide variety of very low frequency (VLF) applications including use as calibration sources, active sonar acoustic surveillance, acoustic targets for sonar training and acoustic trials, acoustic communication with ranges exceeding 1,000 km, underwater navigation networks, acoustic thermometry, and diver deterrence. C-BASS also provides broadband coherent acoustic mimicry of anthropogenic noise (i.e. offshore wind, construction, pile driving, etc.)

C-BASS is a novel family of very low frequency (VLF) electrodynamic sound projectors. These powerful electrodynamic projectors are less expensive, lighter, smaller, more efficient, and have a broader bandwidth than their peers. C-BASS makes possible applications that were previously impractical.

GeoSpectrum offers a wide range of standard C-BASS configurations with operating frequencies ranging from below 10 Hz up to 3 kHz and maximum source levels that exceed 200 dB re 1 µPa @ 1m. Our finite element analysis and modeling tools and significant build experience enable us to customize C-Bass designs to customer specifications. The omni-directional C-BASS can be used individually or in arrays to produce high-power sources with or without directivity.

C-BASS are offered as stand-alone transducers for customer integration or as a GeoSpectrum-provided system that can include VLF amplifiers, pressure compensation, signal controllers, tow bodies, deployment cables, and winch systems.

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Model Number
Resonance Frequency
(Hz @ 20 m depth)
Maximum source level
(dB re μPa @ 1 m)
Max depth without compensation
(m)
Max depth with standard passive compensation
(m)
Max depth with standard active compensation
(m)
Diameter
(cm)
Mass
(kg)
Spec Sheet PDF Download
M72-25
25
197
N/A
10
230
118
402
M72-25
M72-30
35
201
N/A
10
340
102
355
M72-30
M72-50
53
190
N/A
20
600
68
157
M72-50
M72-110
115
190
30
200
900
35
24
M72-110
M72-300
300
190
80
500
1000
22
9
M72-300

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]]> FFR Free Flooded Rings https://geospectrum.ca/product/ffr-free-flooded-rings/ Thu, 06 Apr 2023 13:33:32 +0000 https://geospectrum.ca/?post_type=product&p=7256 Free Flooded Ring – FFR – transducers are broadband transducers with unlimited depth capability and a toroidal beam pattern. They are often used as an acoustic source in high-power applications and those requiring full ocean depth.

GeoSpectrum offers a wide range of FFR transducers and FFR based sources with operating frequencies ranging from 500 Hz to 20 kHz and source levels from 190 to 220 dB re 1 µPa @ 1m. Our finite element analysis and modeling tools and significant build experience enable to us to customize FFR designs to customer specifications. Depending on the application and requirements, Geospectrum can use radially poled and circumferentially poled (segmented) construction methods to produce FFR’s to precisely meet users’ needs with potential savings in cost and weight.

Using FFR technology to produce a standard range of communications transducers with a hemispherical beam pattern, the transducers are ideal for use in a range of underwater communications and acoustic modem applications. As well as producing models tuned to suit popular modem systems, we are able to offer drop-in replacement for transducer models of other companies that may no longer be available on the market.

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Model Number
Resonance frequency
TVR at resonance
Maximum SPL at resonance
Diameter / max section width
Height
Spec Sheet PDF Download
M27-450
4250 Hz
138 dB re 1 μPa/V @ 1 m
193 dB re 1 μPa @ 1m
18.4 cm
16.1 cm
M27-450
M27-550
530 Hz
135 dB re 1 μPa/V @ 1 m
191 dB re 1 μPa @ 1m
24.1 cm
82.5 cm
M27-550
M27-650
3050 Hz
137 dB re 1 μPa/V @ 1 m
193 dB re 1 μPa @ 1m
20.8 cm
20.8 cm
M27-650
M27-850
1850 Hz
138 dB re 1 μPa/V @ 1 m
194 dB re 1 μPa @ 1m
25 cm
24 cm
M27-850
M27-890
990 Hz
135 dB re 1 μPa/V @ 1 m
191 dB re 1 μPa @ 1m
32 cm
53 cm
M27-890

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