Live Sentinel IDS Underwater Intruder Detection Demo

by | May 22, 2024 | News, Sentinel, Wavefront

Live Sentinel IDS Underwater Intruder Detection Demo

As they say, ‘Seeing is Believing’ and so live demonstrations allow potential customers and partners to witness at first hand the power of Sentinel IDS in a relevant, real-world situation.

In early May, we held a well-received live demo of our latest generation of Sentinel IDS Intruder Detection Sonar at Portland Harbour in Dorset on the South Coast of England. Not only could Sentinel’s latest developments be explored but also in-person discussions could be held on specific scenarios and ConOps of relevance to our audience.

Guests from a select range of industry partners as well as existing customers were invited to join us for morning or afternoon sessions during a week of back-to-back live Sentinel IDS in-water performance demos. A multi-head Sentinel system was installed comprising two seabed fixed heads deployed manually from a RIB and a third head operating from our mobile deployment raft.

During the demo days in Portland, Sentinel was put through its paces in various weather conditions in a busy commercial harbour. We demonstrated many of the latest developments included in our May 2024 Sentinel software release for diver detection, assisted diver and drone detection, these include:

  • Multiple head deployment with Sentinel’s sophisticated Super Inheritance tracking across sonar heads;
  • Integration of Bearing And Range To Target (BARTT) with a mobile device to deliver target location and tracking data to mobile personnel in real-time; and
  • Active Passive Track Correlation (APTC) with onscreen marker for more rapid threat evaluation – shown below

Sentinel IDS with APTC marker

Also, on display were:

  • Deployment Raft – Designed to enable Sentinel IDS mobilisation where no suitable infrastructure exists or rapid deployment is critical
  • Command Trailer – designed to act as Central command trailer for multiple Expeditionary Trailers which enable Sentinel IDS deployments in places where no infrastructure exists or rapid deployment is essential

Sentinel IDS Command Trailer

Other Key Features of Sentinel IDS

  • SInAPS® (Simultaneous In-band Active and Passive Sonar)
    SInAPS technology, unique to Wavefront, combines the detection and tracking capabilities of active and passive sonar. SInAPS® draws on the use of both active and passive sonar technologies when tracking low-target-strength drones or very slow-moving targets in highly cluttered seabed conditions, typical of some harbour settings. Without compromising the active tracker, SInAPS uses the processing gain of the Sentinel array, along with its high bearing resolution, to simultaneously passively track targets. SInAPS then combines the spatially co-registered output from the active and passive trackers.SInAPS’ real power lies in its ability to classify and establish threats that would have previously taken much longer to identify. Imagine a situation where a small drone is moving under the cover of a harbour wall; a challenge for any active system. The use of passive sonar allows Sentinel to correlate mechanical noise and intermittent detections to immediately establish the presence of a threat. This reduces alert time and increases response time. Once detected, a passive track that is correlated to an active track (using our latest APTC feature), is immediately flagged as ‘Severe’ and an on onscreen marker appears showing the correlated detections.
  • Super-Inheritance®
    Super-Inheritance allows Sentinel to maintain a single track across multiple sonar heads or indeed to stitch together multiple partial tracks into an unbroken track. When a target becomes lost in the noise and reappears again, either within the same Sentinel Head or a different Sentinel Head on the same system, the algorithms can determine it is a single track and stitch the partial tracks together.
  • Zoom Window with ultra-fast local history video replay
    The Zoom Window shows active sonar target imagery produced using full resolution processing. This is at much higher fidelity than the imagery in the active Plan Position Indicator (PPI), which is the standard large area 2D display in Sentinel showing range and bearing. The detail shown in the Zoom Window over the latest frames can be played using our unique local history replay video mode at many times real-time and can help the user to classify the target. If selected it can automatically track the threat.

Download the Sentinel IDS brochure

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