PAT – Portable Acoustic Target

PAT is a towed acoustic source suitable for use as an echo repeater, a target simulator and augmenter, and a receiver. This compact, low-cost solution provides the user with a flexible tool to support active and passive ASW training and acoustic system testing/trials and is suitable for operation from small vessels.

The PAT allows ASW operators to retain and improve their skills and allows new operators to be properly trained in a non-combat environment.

The systems have the capability to generate flexible, designated echo return and/or noise source characteristics similar to real-world targets and payloads. This provides robust, diversified acoustic noise generation to support acoustic systems and trials.

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Description

Versatile Target for ASW Exercises.
Coordinated ASW training exercises
Tactical and technical development activities
Operating Depth
120 m
Survival Depth
200 m
Max Tow Speed
Deployment/Recovery 4 kn Towing 8 kn
Weight
Sonar Rack 190 kg Winch w/ cable and A-frame 970 kg Tow Body 120 kg
Power
240 V 1 Ph 50 A* (assumes source and winch are not operated at the same time)
Frequency Band Active Echo Repeat
1-5 kHz (LF), 5-10 kHz (MF)
Active Target Strength Setting
0-20 dB
Max Active Echo Repeat Level
175 dB
Sound Emulation for Passive Sonar
10 Hz – 2kHz
Max Concurrent Narrowband Tonals
Up to 10
Passive Max Source Level
160 dB (LF), 160 dB (MF)
  • Transmits flexible, designated echo returns and broadband passive signatures
  • Robust and diversified acoustic noise generation to support acoustic systems development and trials
  • Compact, lightweight and low cost
  • Sound source can be reconfigured to meet training mission requirements and can echo repeat at frequencies from 1 kHz to 10kHz
  • Configurable to accommodate a variety of towable sensors/sound sources to suit required application
  • Optimized for maximum performance per designated requirement
  • Reusable and environmentally friendly
  • Wet end consisting of towed body:
    • M21 Bender, Active Mode echo repeat sounds source
    • M72-110 C-Bass, Passive mode sound source
    • M72 Pressure compensator
    • M36 Monitoring Hydrophone
  • Electric winch and A-frame on modular base with towing sheave equipped with cable scope meter
    • The PAT winch system may be secured to the deck using load binders/straps, or can be bolted using mounting brackets
  • Operator console with power amplifier, ruggedized notebook PC, and software

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