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Helicopter Long-Range Active Sonar

Features

  • Highest-performance dipping sonar in the world — demonstrated against both diesel-electric and nuclear submarines, the HELRAS outperforms in diverse geographic and acoustic environments, and in both active and passive operations.
  • Demonstrated performance advantage over medium-frequency (2 kHz and higher) dipping sonar systems — by operating at a nominal frequency of 1.38 kHz, the HELRAS consistently achieves long- range detections and target tracking in both littoral and open ocean environments.
  • Lightweight system produces high source levels, narrow vertical transmit beams and high array gain, performing at least 14 dB higher than that of medium frequency dipping sonar systems.
  • Patented, compact, powerful acoustic transducers and expandable transmitting and receiving arrays produce a lightweight system that exploits the advantages associated with using truly low acoustic frequencies.
  • High-resolution Doppler processing — long-shaped CW pulses (up to 10 seconds) and wide-bandwidth FM pulses (up to 5 seconds) are available to detect near-zero Doppler low strength targets.
  • Interoperable with all key sonobuoys and modern low-frequency towed variable depth sonars.
  • Yields savings in operating costs — long-range detection and large area search rates reduce total operating hours.

Resources

  • L3Harris Ship Reference Guide 2021

    L3Harris Ship Reference Guide

  • HELRAS Data Sheet

    HELRAS Data Sheet

Featured News

Australia Awards Group Photo

Trade Release | 09. 20. 2023

Australia Awards L3Harris AUD$328 Million Maritime Underwater Tracking Range Contract

The Australian Department of Defence awarded L3Harris Technologies a contract, valued at up to AUD$328 million, to deliver new Maritime Underwater Tracking Ranges (MUTR) for the Royal Australian Navy (RAN).

Australia Awards Group Photo

Trade Release | 09. 20. 2023

Australia Awards L3Harris AUD$328 Million Maritime Underwater Tracking Range Contract

Submarine Rendering

Editorial | 07. 20. 2023

Successful Launch and Recovery of Autonomous Underwater Vehicle from Underway Submarine

L3Harris Italian Facility Opening

Press release | 06. 20. 2023

L3Harris Expands Footprint in Italy with New Facility, Country Executive

L3Harris IPMS supporting Canada and its allies around the world for 40 years

Editorial | 05. 23. 2023

Celebrating 40 Years in Canada’s Naval Industry

L3Harris’ Arabian Fox outfitted with BigBear.ai’s AI-based forecasting, situational awareness analytics, and computer vision capabilities will advance manned-unmanned teaming. Photo By Petty Officer 1st Class Vincent Aguirre

Trade Release | 05. 09. 2023

L3Harris and BigBear.ai Team to Deliver Artificial Intelligence for Autonomous Surface Vessels

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