Example: Finland Harbour and Coastal surveillance

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Example Finland Harbour- and Coastal surveillance
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Navtek VTS system
Distributed signal processing and tracking.
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Navtek VTS centres
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Navtek VTS centres
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Navtek VTS centres
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Example Workstation display
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Example Workstation display
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Example Situation display
Remote radar with integrated camera control.
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Service display and Chart applet
Chart applet VTS display using Web browser
Service display
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Example - Navtek VTS System
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Navtek Radars

• X-band
• 18ft. Slotted wave- guide
• 34dB / 0.34º beamw.
• Up-mast single transceiver or
• Dual redundant transceivers
• 25kW
• Web-based service access

• X-band / S-band
• 18ft. Reflector
• 44dB / 0.5 º beamw.
• Up-mast single transceiver or
• Dual redundant transceivers
• 25 - 70kW
• Web-based service access

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Navtek Radars

• X-band horizontal pol.
• 8ft. Reflector
• 40.4dB / 0.8º beamw.
• Up-mast single transceiver or
• Dual redundant transceivers
• 25kW
• Web-based service access

• X-band circular pol.
• 8ft. Reflector
• 36.5dB / 0.8º beamw.
• Up-mast single transceiver or
• Dual redundant transceivers
• 25kW
• Web-based service access

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VTS-Functions 1

• Track zones
• The operator can define zones where automatic
  tracking will be initiated.
• Any target moving into this zone will
  automatically be tracked an get a track number
  assigned to it.
• Routes
• A large number of routes can be defined, with
  separate properties for each route leg and
  waypoint.
• Alarm zones
• The operator can define as many as 10 independent
  alarm zones.
• Alarm will be given when a target enters the zone
  and when it leaves the alarm zone.
• Collision warnings will be given for tracks
  inside the alarm zone.

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VTS-Functions 2

• Course and speed alarm
• A route will consist of one or several legs.
• To each leg, speed and cross track alarms can be
  defined.
• A track, which has been assigned to a route, will
  cause alarm if it exceeds the speed limit or
  moves too far off from the route.
• Anchor alarm
• The operator can set a track to the state
  anchored and define an offset from the anchor
  position.
• If the track moves outside the offset, an alarm
  will be given.

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VTS-Functions 3

• Sensor integration
• Most types of sensors can be utilised, like
  meteorological, AIS, cameras, and radars.
• Radar Control

 
 
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VTS track operation

• When a target is selected, the operator can take
  a lot of actions, the most important are
• Identify Assign name and symbol. (The symbol is
  used to visualise type of ship).
• Correct Tell the track manager to acquire the
  target in a new position (manualy helping the
  tracker)
• Swap labels.
• Drop Manual target drop.
• Connect to routename Assign the target to a
  route.
• Set anchor alarm.
• Set berthed.
• Show/hide track history Set display of track
  history

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Tracks
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Navtek Radar Signal Processor (NRSP)

• At Radar Site
• The radar video is taken from the radar
  transceiver and input to the NRSP II radar
  interface card.
• The figure to the right show how the trigger and
  video signal are processed through the NRSP II.

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Radar Signal Processor Functions

• Automatic target tracking.
• Automatic target initiation (ATI).
• Buoy tracking, with separate alarm limit for each
  buoy.
• Supports manual track initiation, correction and
  deletion.
• Converts and compress radar scans and transfers
  to TS center
• At the VTS centre the Navtek Track Manager
  provides invisible "hand-over" of tracks from one
  tracker to another.
• It also allows two or more radars to track the
  same target, to enhance accuracy.

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Transmission lines

• The transmission of all radar data is pure
  digital, and the transmission is on TCP/IP
• All radar processing including tracking and scan
  conversion are done at the radar site.
• The data sent are prioritised so that track data
  has higher priority than radar image.
• Masking of areas of little interest, (radar image
  in these areas are sent through at slower speed).
• Data compression.
• Sending only the changes in the radar picture.

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Navtek Track Manager (NTM)

• At VTS Centre
• The Navtek Radar Signal Processors (NRSP) handle
  the tracking itself on each radar site.
• From each NRSP, the track data are sent for each
  radar sweep to the Track Manager at the VTS
  centre.
• The main function of the Track Manager is track
  fusion, track hand-over between radars and track
  table operations

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Navtek Radar Site Server (NRSS)

• At VTS Center
• Radars are integrated by setting up scan
  converters at each radar (NRSP) and sending scan
  converted pictures to a server (NRSS) at the VTS
  centre.
• The NRSS automatically will compile a picture
  consisting of radar video from all radars
  covering the area the operator selects on his
  workstation.
• Systems with more than 20 radars using this
  technology are in use.

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Image integration
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In the NRSS the images are cut along editable
polygons to give a mosaic of radar pictures
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Navtek Logger/Recorder (NLR)

• For interfacing the VHFs and telephones there is
  a dedicated Audio Digitising Module
• The Navtek Logging/recording system typically is
  set up to log
• Radar raw video
• Target tracks
• Operator actions
• Alarms and warnings
• Audio
• other customer defined data