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Navico BR24 Radar Odin Sletten Technical Sales Engineer Navico Denmark
© Navico  Company Confidential 2 A Short History of Radar ,[object Object]
In 1935, The British invented and patented the first radar for aircraft defence
In 1950, Decca introduced the first marine pulse radar utilising a magnetron, which eventually trickled down into recreational boats…,[object Object]
© Navico  Company Confidential 4 Weaknesses of Traditional Radar ,[object Object]
Blurs and distorts objects, making it difficult to interpret surroundings and navigate safely
Obscures objects closest to the boat, where visibility is most important for collision avoidance
Difficulty distinguishing targets from clutter - requires experience to safely operate
Inconvenient installation and operation
Magnetron takes several inconvenient minutes to warm up
Magnetron has a limited life, and is expensive to replace
Large cables and connectors
Power consumption is impractical for small boats and most sailboats
Emissions require mounting away from humans and other electronic equipment. Most small boats have no room at all,[object Object]
© Navico  Company Confidential 6 Navico’s BroadBand Radar ,[object Object]
Radar is finally easy enough for a novice – identifies targets clearly with no ‘tune control’,  as sea and rain clutter rejection is 5-10 times better than a pulse radar
Navigation is truly easy, even at an unprecedented 1/32 NM range, with unparalleled resolution and clarity within two metres of the dome, with no ‘main bang’, ‘zero range adjust’, or close-range sidelobe distortion,[object Object]
© Navico  Company Confidential 8 Comparison and Main bang main  bang 4 kW HD pulse radar, 1/8 NM range  BroadBand Radar, 1/16 NM range
© Navico  Company Confidential 9 Comparison and Main bang main bang suppression 4 kW HD pulse radar, 1/8 NM range  Broadband Radar, 1/16 NM range
© Navico  Company Confidential 10 Close Range Performance
© Navico  Company Confidential 11 Approximate position  of boat Close Range Performance Moored boat Foot bridge 4 kW HD pulse radar  Broadband Radar
© Navico  Company Confidential 12 Superb Resolution Pile moorings Moored boat 4 kW HD Pulse Radar  BroadBand Radar
© Navico  Company Confidential 13 Seaclutter Performance Two boats, towing into the harbour 4 kW HD pulse radar, 1/2nm  Sea clutter rejection 50%  BroadBand Radar ¼ NM  No sea clutter rejection applied
What makes the difference?
© Navico  Company Confidential 15 Traditional Radar ,[object Object]
The pulse propagates outwards in a direction determined by the angle of the rotating radar antenna at the time of transmission.
The radar then switches to receive mode to listen for reflections.
If the pulse reflects off an object, it will return to the receiver with a delay proportional to the distance of the object from the transmitter.
The antenna angle at the time of pulse transmission equals the direction of the object.,[object Object]
Transmits a ‘rising tone’ (Tx wave) with linear increasing frequency
The wave propagates out from the transmitter retaining the frequency it had when it was transmitted
If it reflects off an object, it will return to the receiver, still at the frequency it had when originally transmitted
Meanwhile the transmitter continues to output an increasing frequency,[object Object]
Unique Advantages
© Navico  Company Confidential 19 Solid State – No Magnetron ,[object Object]
Eliminates 2-3 minutes warm-up time typical of magnetron pulse radars

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Digital Radar Processing and the New Low Power Radars

  • 1. Navico BR24 Radar Odin Sletten Technical Sales Engineer Navico Denmark
  • 2.
  • 3. In 1935, The British invented and patented the first radar for aircraft defence
  • 4.
  • 5.
  • 6. Blurs and distorts objects, making it difficult to interpret surroundings and navigate safely
  • 7. Obscures objects closest to the boat, where visibility is most important for collision avoidance
  • 8. Difficulty distinguishing targets from clutter - requires experience to safely operate
  • 10. Magnetron takes several inconvenient minutes to warm up
  • 11. Magnetron has a limited life, and is expensive to replace
  • 12. Large cables and connectors
  • 13. Power consumption is impractical for small boats and most sailboats
  • 14.
  • 15.
  • 16. Radar is finally easy enough for a novice – identifies targets clearly with no ‘tune control’, as sea and rain clutter rejection is 5-10 times better than a pulse radar
  • 17.
  • 18. © Navico Company Confidential 8 Comparison and Main bang main bang 4 kW HD pulse radar, 1/8 NM range BroadBand Radar, 1/16 NM range
  • 19. © Navico Company Confidential 9 Comparison and Main bang main bang suppression 4 kW HD pulse radar, 1/8 NM range Broadband Radar, 1/16 NM range
  • 20. © Navico Company Confidential 10 Close Range Performance
  • 21. © Navico Company Confidential 11 Approximate position of boat Close Range Performance Moored boat Foot bridge 4 kW HD pulse radar Broadband Radar
  • 22. © Navico Company Confidential 12 Superb Resolution Pile moorings Moored boat 4 kW HD Pulse Radar BroadBand Radar
  • 23. © Navico Company Confidential 13 Seaclutter Performance Two boats, towing into the harbour 4 kW HD pulse radar, 1/2nm Sea clutter rejection 50% BroadBand Radar ¼ NM No sea clutter rejection applied
  • 24. What makes the difference?
  • 25.
  • 26. The pulse propagates outwards in a direction determined by the angle of the rotating radar antenna at the time of transmission.
  • 27. The radar then switches to receive mode to listen for reflections.
  • 28. If the pulse reflects off an object, it will return to the receiver with a delay proportional to the distance of the object from the transmitter.
  • 29.
  • 30. Transmits a ‘rising tone’ (Tx wave) with linear increasing frequency
  • 31. The wave propagates out from the transmitter retaining the frequency it had when it was transmitted
  • 32. If it reflects off an object, it will return to the receiver, still at the frequency it had when originally transmitted
  • 33.
  • 35.
  • 36. Eliminates 2-3 minutes warm-up time typical of magnetron pulse radars
  • 37. Conserves power; operating power drain is ~30% less than the best 2 kW radar (<1/20 in standby mode) – extremely beneficial for sailboats and smaller power boats
  • 38.
  • 39.
  • 40.
  • 41.
  • 42. Extremely low power - less than 1/10th of the transmitted emissions of a mobile phone; install in any position, even on the smallest of boats
  • 43.
  • 44.
  • 45.
  • 46. Extremely low power - less than 1/10th of the transmitted emissions of a mobile phone; install in any position, even on the smallest of boats
  • 47. Super small custom 13.5 mm RJ45 connector and round 9 mm pre-connected radar cable allows simple bridge tube installations
  • 48.
  • 49.
  • 50. No blind spot at center (mainbang)
  • 51. Totally safe, 0.1 W TX – install anywhere
  • 52. InstantOn – no warm up time
  • 53. Lower power consumption, no standby power
  • 54. Five times better sea and rain clutter performance
  • 55.
  • 56. © Navico Company Confidential 30 Long Range Performance     Scanner height Target Object at sea level Small boat (2 m high) Big launch (6 m high)       2 metres 3.1 miles 6.3 miles 8.5 miles 3 metres 3.8 miles 7.0 miles 9.2 miles 4 metres 4.4 miles 7.5 miles 9.8 miles Maximum range for any radar under ideal circumstances: __________________________________________________________________________ So….. there is no possible way a radar on a small/medium boat can see a large launch at more than 10 miles But… It may be possible to see rain or high land features beyond 10 miles.
  • 57. © Navico Company Confidential 31 Further Enhancement Navico’s R&D teams have developed technologies, which bring interference from other radar and onboard reflectors to a minimum or even totally eliminates them. This also means we are not depending on already patented technologies, which would have influenced the price of the radar.
  • 58.
  • 59. 50% less than a 4 kW radar
  • 60. Power consumption in standby is only 1.6 W
  • 61.
  • 62.
  • 63. Easy to operate. No tuning or adjusting required
  • 64. Very low sidelobe effects
  • 65. Totally safe, 0.1 W TX – install anywhere
  • 66. No magnetron that wears out over time
  • 67. Easy to install – 9 mm cable and very small connector
  • 68.