Passive Sonar - GeoSpectrum Technologies Inc https://geospectrum.ca/product-tag/passive-sonar/ 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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]]> Spherical Transducers https://geospectrum.ca/product/spherical-transducers/ Tue, 13 Jun 2023 21:03:18 +0000 https://geospectrum.ca/?post_type=product&p=7485 High-frequency sound source and receiver

GeoSpectrum’s spherical transducers are suitable for a variety of applications, including active/passive sonar, marine mammal detection (MMD), acoustic data transmission, and subsea communications. A spherical transducer may be used with an M620-110 power amplifier if it is intended to be used as a sound source or an M303 transceiver board if it is it is intended to serve as a sound source and a receiver.

GeoSpectrum’s spherical transducers provide an omnidirectional response and come in a variety of sizes ranging from 6″ to 0.5″ in diameter and have resonant frequencies covering a band of 11 kHz–150 kHz. GeoSpectrum’s spherical transducers are effective as both transmitters and receivers.

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Model Number
OD (cm)
Resonance Frequency (Hz)
TVR @ Resonance (dB re μPa/V @ 1 m)
OCV @1 kHz (dB re V/μPa)
Max Depth (m)
Weight (kg)
Capacitance (nF)
Spec Sheet PDF Download
M18C-1.0
2.9
68000
148
-198.5
2500
0.2
10.2
M18C-1.0
M18C-1.5
4.4
44000
148
-195.0
2500
0.3
23.5
M18C-1.5
M18C-2.5
6.7
27000
148
-190.0
2500
0.5
42.5
M18C-2.5
M18C-4.0
10.8
16500
148
-186.5
2500
1.4
57.3
M18C-4.0
M18C-6.0
15.7
12000
148
-185.0
2500
4.8
80
M18C-6.0

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]]> M670 HMS – Hull-Mounted Sonar https://geospectrum.ca/product/m670-hms-hull-mounted-sonar/ Mon, 05 Jun 2023 16:11:58 +0000 https://geospectrum.ca/?post_type=product&p=7426 The M670 HMS provides surface ships with concurrent, high-performance active and passive sonar capability for the detection, classification, tracking, and localization of underwater targets. It allows the detection of submarines, torpedoes, and mid-water mines and obstacles. Its compact form enables integration in a wide variety of new or upgraded naval vessels. M670 HMS cost-effectiveness makes it a wise and affordable choice for navies seeking a high-performance ASW capability for open-sea as well as littoral environments. Sonar processing is performed by GeoSpectrum’s sensor agnostic RecView system providing flexible waveforms and optimal detection performance and enabling seamless integration with additional ASW systems such as towed array sonar and sonobuoy processor

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The M670 HMS can be readily operated for ASW operations and torpedo and mine detection and alert. As a hull-mounted sonar it does not require launch and recovery operations. The HMS can be operated stand-alone or interfaced to the CMS. It can be augmented by and fully interoperable with a towed array sonar such as GeoSpectrum’s Towed Reelable Active Passive Sonar (TRAPS) enabling bi-static and multi-static operations. M670 HMS can also be part of integrated ASW suite including multiple sonars, Torpedo defense systems, underwater communication and Bathythermograph systems.

Array
40 staves passive receive array
Source Level
Customizable
Active Frequency
LF, MF
Pulse Types
CW, FM, LFM, HFM, COSTAS, Custom
Pulse Length
0.05 to 10 seconds
Passive Processing
Broad Band, Narrow Band, DEMON, Transient
Doppler Processing
+/- 60 Kn
Shock
MIL-STD-901D
Vibration
MIL-STD-167-1
Additional
Eight elements active transmit array
Independent vertical steering of eight transmit channels
Operation by supplier provided operator console or adequate Multi-Function Console
360 degrees operation
Detection Range
Excess of 1st CZ
Features
  • Active & passive submarine detection
  • Active & passive torpedo detection and alert
  • Flexible fixed and operator-defined wave forms for optimal performance
  • Multi-target automatic tracking
  • Classification support
  • Advanced, user-friendly sonar processing and display with built-in analysis tools
  • Integrated situational awareness display on powerful digital map tool
  • Available interfaces to CMS, underwater telephone, acoustic decoy system
  • Extended time-history recall for further contact analysis
  • Data recording and replay
  • Built-in Test (BIT)
  • Sonar performance modeling and estimation
Options
  • Customizable frequency range
  • On-board simulator & trainer
  • Portable Bathythermograph (XBT) system
  • Customizable transducer assembly and dome dimensions
  • Upgrade of existing HMs
  • Integration with towed array sonar
  • Transducer assembly in a sonar dome
  • Power amplifier
  • Sonar rack for management, interface control and sonar processing
  • Operator’s console

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