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  • Underwater Acoustics

    Acoustic Simulator & Trainer

    Powerful and easy to use, the toolbox includes wizards and tutorials
    for novice users

    Intended specifically for the Geospatial Intelligence community in
    assisting IMINT and GEOINT analysis

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    • High fidelity target model
    • Realistic acoustic propagation
    • Flexible instructor GUI for scenario definition and simulation control
    • Replica shipboard consoles with same ‘look and feel’ as operational equipment
    • Real-time audio and video monitoring of student performance
    • Post-training debrief capability
    • Maximizes the effectiveness of sonar operator and analyst training
    • Significantly reduced costs when compared to performing training at sea
    • Easy to train students under different scenarios tailored to particular targets of interest, an expected tactical scenario, or a specific ocean type and sound velocity profile
    • Mimicry of the shipboard console at a low cost using COTS hardware
    • Feedback to students during training session as well as through the Debrief facility for effective learning
  • The Acoustic Simulator and Trainer is Array’s latest sonar training platform. It evolved from Array’s successful Canadian Towed Array Sonar System (CANTASS) Mission Simulator CMS. The CMS is an advanced acoustic simulator which has been in continuous service with the Canadian Navy for over ten years. The CMS is used as an advanced AN/SQR-19 towed-array trainer for sonar operators and senior analysts on the Halifax-class frigates.

    We offer customized training systems to suit any type of sonar deployment – including surface ship and submarine mounted sonars and fields of sonobuoys. Both active and passive sonar systems may be modeled. The simulation may include multiple sonar systems such as: hull-mounted sonar (HMS), flank arrays, conformal arrays, towed arrays, active intercept sensors, passive ranging systems and a number of sonobuoy types including omni, DIFAR, DICASS and VLAD. The analyst displays may also be customized so that they are identical in appearance to the displays presented by the shipboard consoles.

  • The Acoustic Simulator and Trainer consists of four major subsystems, each subsystem consists of standalone COTS components. The use of COTS hardware makes the GATS design very flexible and offers almost unlimited scope for future expansion. Customers can replace or upgrade any subsystem without affecting the others. This method of design ensures lower life-cycle costs for the entire system.

    Each subsystem consists of standalone COTS components. The use of COTS hardware makes the GATS design very flexible and offers almost unlimited scope for future expansion. Customers can replace or upgrade any subsystem without affecting the others. This method of design ensures lower life-cycle costs for the entire system.

    Instructor Workstations

    The system includes at least one Instructor Workstation, which is hosted on industry-standard PC hardware. Sonar instructors use these workstations to define training scenarios and to control the execution of ongoing training sessions. The Instructor Station software provides a graphical user interface which allows the instructors to define the key elements of the scenario: Ocean Model, Target Model and Target Dynamics.

    Once the scenario has been defined, the instructors control the execution of the scenario using the Instructor Workstation. The instructors are able to monitor the execution of the simulation in the Tactical Plot, which displays the location of all the targets in the simulation in real-time. Instructors may also modify the mission execution at any time, in order to present new challenges to the student analysts.

    The instructor can also monitor any of the Student Station sonar displays in real-time during mission execution from the Instructor Workstation position. Additionally, the audio streams for each Student Station may be monitored in real-time from the Instructor Workstation. An audio intercom function is provided allowing the instructor to communicate with any individual student via his or her sonar headset. This facility allows an instructor to interactively correct a student error during mission execution.

    Virtual Environment Generator

    The Virtual Environment Generator performs the task of computing signals that correspond to the requested noise sources and modeling the propagation of those signals through the ocean to the sonar sensors. The ocean simulation uses a ray-path model to trace the propagation of acoustic energy. This model accounts for non-linear propagation due to variation of sound speed with depth in the ocean, and is able to model both direct and indirect (surface- or bottom-bounce) propagation paths. Multiple instances of the Virtual Environment Generator may be provided, allowing more than one scenario to be simulated at any time.

    Student Stations

    The Acoustic Simulator and Trainer includes one or more Student Stations. Typical Student Stations, such as those used on the CMS, have multiple high-resolution displays and custom-designed input peripherals arranged in the same manner as the shipboard consoles. The Student Station software is customized to present the sonar displays and user-interface components to the operator in a manner indistinguishable from the shipboard console.

    Many different kinds of sonar displays may be supported including LOFAR and DEMON grams and Bearing-Time Record (BTR) displays for passive sonar applications, and Plan Position Indicator (PPI) displays for active sonar systems. Additionally, audio monitoring facilities are provided, allowing the student to listen to a selected sonar beam.

    Debrief Recorders

    The system includes an optional debrief recording system. The debrief recorder captures the video from all Student Station displays as well as all Student Station audio channels and records the data to a hard drive. Once the mission simulation is complete, an instructor may initiate a ‘debrief’ session.

    During a debrief session, the mission simulation will be run a second time and the recorded debrief data will also be replayed synchronized with the simulation. This permits the instructor to show the students an almost instantaneous replay of any part of the mission, reviewing the actions that they took. At the same time, the instructor can perform the analysis tasks himself using the live simulation to illustrate how to correctly perform the requested operation. Debriefing sessions are an essential component of the teaching process and help students learn effectively.