Portable Acoustic Range (PAR)
acoustic range

Based on their radiated noise, submarines and surface vessels can be detected by passive sonar systems. DSIT’s Portable Acoustic Range (PAR) offers a portable, simple and cost-effective way to accurately measure, in real-time, the radiated noise of submarines and surface ships. The PAR enables navies and shipyards to monitor and control this noise and silence their ships and submarines.

By continuously tracking the measured vessel and transmitting the data to a measurement ship, the PAR system enables real time radiated noise processing, analysis and display. The PAR includes a comprehensive platform database for management of the measurement results. It also provides playback and post analysis capabilities.

The PAR’s compact design and flexibility enables rapid deployment and retrieval of the system. It saves the maintenance costs involved in operating a fixed acoustic range while allowing its users to obtain highly accurate and reliable measurements of their fleet. The PAR is the cost-effective solution for measuring the radiated noise of any naval platform or other underwater noise source.

DSIT is considered the world leader in the area of portable acoustic ranges, and has delivered more PAR systems, to various customers around the world, than any other company.

PAR Data Sheet

DSIT’s Portable Acoustic Range is offering the following main features:

  • Broad Frequency Range: Broad range of measured frequencies
  • Ultra-Sensitive Array: High-end ultra-sensitive solid array. The number of hydrophones in the array is tailored to meet customer requirements
  • Multiple Noise Processing Methods: the system supports all standard methods of noise processing, analysis and display including:
    • Broad Band Spectrum
    • Narrow Band Spectrum
    • DEMON
    • Waterfall
    • Zoom
    • Time Domain
    • Audio Statistics
    • and more
  • High Processing Gain: the system is using a vertical array with advanced beam former to achieve high processing gain. This allows the measurement of silenced platforms
  • Simultaneous Processing: multiple processing channels can be analyzed and displayed simultaneously
  • Real-Time Control, Analysis and Display: wireless communication between the hydrophone array and the measurement ship remote control unit allows real time control, analysis and display
  • Accurate Tracking: continuous automatic and accurate tracking of measured vessel, both surface and underwater platforms
  • Comprehensive Database: the system includes a comprehensive platform database for measurement results management
  • CPA Calculation and Display: The system’s Array Tracking Unit (ATU) calculates and displays the Closest Point of Access (CPA) of the submarine in relation to the array
  • Playback & Post Analysis: the system supports playback and post analysis of measured data
  • Compact and Portable: the PAR is designed to allow portability. The system can be stored and transported in a standard shipping container.
  • Reliable and Robust: the PAR is built to operate in harsh conditions for long periods of time. Its units are designed to withstand high shock levels which may be caused by sea operations or during transportation
  • Easy to Use: easy and quick deployment and recovery with minimum crew required
  • Flexible Deployment: DSIT’s PAR offers two deployment and operation methods per customer request:
    • Free Drifting Array– the PAR array is vertically drifting in the water.
    • Moored Array– the PAR array is moored to the sea bottom.
  • Built In Test: The system includes BIT features and various sensors to alert and diagnose possible failures in real time
  • Low Cost of Ownership: the PAR is easy to maintain and calibrate. The costs pertaining to its operation are only a fraction of those associated with the operation of fixed acoustic ranges
  • Measurable Platforms
  • Submarines
  • Surface ships
  • Any other underwater noise sources
  • Frequency Range
  • 10 Hz – 50,000 Hz
  • Simultaneous Processing Channels
  • up to 8; each with different parameters
  • Duration of Operations In-The-Water
  • up to 72 hours continuously
  • Arrays Depth
  • for Ship Measurement: Up to 20 meters (short cable)
  • for Submarine Measurement: Up to 200 meters (long cable)

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