Enterprise Autonomous Underwater Surveillance Vessel for Maritime Security

Enterprise is a high-tech Autonomous Underwater Surveillance Vessel (vehicle). Its function is to carry out underwater surveillance to seek out potential security threats to provide the following: -

• Intelligence for control & command;
• Identification of potential risk;
• Interception of intruders;
• Inspection of assets.

Typical Deployment:

• Harbour Protection;
• Border Security;
• Gas & Oil Pipeline Security;
• Mine Field Survey;
• Ships Hull Survey.

System Description

Enterprise can be used in a wide range of applications, providing high level intelligence back to the control & command centre. The system can be deployed from either a harbour or from the side of a boat.

Enterprise is completely autonomous, and is fitted with a high definition forward looking sonar, a CCTV camera and a high powered spot light. Navigation of the Enterprise can be carried out in one of two methods: -

• Pre plotted programmed route;
• Direction heading operated by control & command.

The pre plotted programmed route method of navigation would be used in applications such as pipeline monitoring, where the route is always the same and the co-ordinates are known. Direction heading operated by control & command would be used in all other applications at the discretion of the operators.

Enterprise is available in two versions:

1. Enterprise1 – Provides 3 – 5 Hours of operation without recharge;
2. Enterprise2 – Provides 16 – 20 Hour of operation without recharge.

The difference between the two systems is in the battery technology. Enterprise1 utilises standard GEL rechargeable battery technology, Enterprise2 uses a classified battery technology that produces up to 4 time’s greater operation duration than Enterprise1.

Enterprise power supplies require recharging when levels are low. Battery change is simple. Front and rear sections of the Enterprise are removed so as to provide access to the centre section (where the battery sets are housed).

Sonar – Features

• Detection of divers, swimmers and swimmer delivery vehicles (SDV) in automatic and manual modes;
• Automatic target tracking;
• Depth classification of detected targets;
• Determination of target data like bearing, range, course, depth, speed, aspect angle, length and level;
• Display of processed detection and classification echoes together or alter­native to acoustic ”raw” data;
• Display of tactical information on the surveillance display with graphical picture of the protected area, sector coverage of the sonar head, target markers, track symbols, track history.

Operation

The system is working fully automatically, after detection of a target based on the continuous measurement of the ambient noise/reverberation and automatic threshold setting, the detection, tracking, classifi­cation, and depth functions are initialised without operator inputs.

Typical sonar display showing Diver as ATT – Target T1

Special Characteristics of DDS

• Real 3-D sonar;
• High horizontal- and vertical resolution;
• Low sensitivity against surface and bottom reverberation;
• Wide observation sector;
• Long detection ranges;
• Fully automatic operation.

Detection Modes

• Horizontal detection sector 96°;
• Horizontal beam width 2 ζ-3dB hori. <= 1.0°;
• Range scales (first 30 m is blanked) 200, 500, 1000, 2000m;
• Transmission Pulse type CW or FM;
• Transmission frequency 60 kHz;
• Frequency band 5 kHz;
• Transmission power max. 220 dB;
• Pulse length (four steps) 250 µs - 10.0 ms;
• Pulse repetition time (depending on range scale) 0.5 - 4 sec;
• Bearing accuracy on display (R=400 m, T=-10 dB, Scale= 00 m)<= 0.5°;
• Range accuracy on display (R=400 m, T=-10 dB, Scale= 00 m)<= ± 1%.

CCTV – Features

• Image Sensor – 1/3" Colour Sony CCD;
• Resolution – Horizontal 460 TV-Line;
• Output Signal – 1.0Vp-p (Sync. Negative);
• Minimum Illumination – 1Lux / F1.2;
• Gain Control – Automatic;
• Lens – Fixed 4mm Auto Iris.

Spot Light – Features

• High Powered Halogen Spot Light.

Transmission

Transmission distance has no limits (if required). In cases where long range transmission is required, repeater modules carry the signal accordingly.

All information is transmitted back to the control and command centre via wireless LAN where the operators are able to actually see visual images. Enterprise is fitted with headlights, which provides illumination for the onboard CCTV camera.

Enterprise – General Specification

• Speed – 5 knots;
• Guidance & Control –
  (i) Pre plotted programmed route;
  (ii) Remote operator control;

• Propulsion –
  (i) Enterprise1 – GEL rechargeable Battery;
  (ii) Enterprise2 – Classified rechargeable Battery technology;

• Dimensions – 6000mm x 710mm;
• Weight – 1.4 Tonne.

Control & Command – General Specification

• Portable option including: -
  (i) High-spec laptop Computer;
  (ii) Software;
  (iii) Multiple Screen Display;
  (iv) Joystick Remote Control.

• Fixed option including: -
  (i) Central Computer;
  (ii) Software;
  (iii) Main Enterprise Control LCD Monitor;
  (iv) Sonar Display LCD Monitor;
  (v) CCTV Display LCD Monitor;
  (vi) Joystick Remote Control.

Westminster International's Maritime Security Solutions homepage.

To view this as a PDF please click Autonomous Underwater Surveillance Vessel.

To view our related Marine CCTV Camera Kit product as a PDF please click Marine CCTV Kit.

To view our related Underwater Net product as a PDF please click Underwater Security Net.

To view our related Diver Detection Sonar product as a PDF please click Diver Detection Sonar.

To view our related DDS-J Diver Detection Sonar product as a PDF please click DDS-J Diver Detection Sonar.

To view our related Underwater Communication Diver Disruption product as a PDF please click Underwater Communication & Diver Disruption

To view our related Pulsar-3D Advanced Diver Detection product as a PDF please click Pulsar 3D.

To view our related Marine Barrier product as a PDF please click Marine Barrier.

For more information - please click here to contact us.