Agenda item 1 Real examples of impact of wind turbines on radar operations

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Agenda item 1Real examples of impact of
windturbines on radar operations

• Daan Rabijns, Belgocontrol

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4 cases

• measurable effects of a single turbine at 60 km
  from the radar
• severe operational impact Büchel (GE)
• severe operational impact Villancien (Fr)
• example with tolerable operational impact

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case 1 a single turbine (142m) at 60 km
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case 1 measured impact
primary only
mode S only
combined
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Case 2 unacceptable impact
Cells 200 x 200 m2

• No track initiation within the cells

• Only update of existing tracks

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Case 2 example 1, Airliner FL350
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wind turbine
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plot (not shown to ATCO)
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Track (shown to ATCO)
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Track initiation delay 3 scans Coasting 3 scans
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? Radar
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Case 2 example 1, Fighter Approach
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wind turbine
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plot (not shown to ATCO)
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Track (shown to ATCO)
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Track initiation delay 3 scans Coasting 3 scans
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? Radar
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Case 3 turbines 34 km from the radar
4/6 turbines 142m
radar
test flight
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Case 3 turbines 34 km from the radar
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Case 4 tolerable operational impact
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Case 4 tolerable operational impact
10 turbines 149m
Cessna
aircraft w/o transponder
landing aircraft
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Case 4 tolerable operational impact
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Conclusions

• case 1 Impact on PSR can extend to end of radar
  range
• case 2 and 3 Impact not tolerable
• case 4 Tolerable impact on ATCO screen

examples can not be generalized
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Daan Rabijns Belgocontrol Tervuursesteenweg
303 B-1820 Steenokkerzeel phone [phone]
15 fax [phone] rad_at_belgocontrol.b
e www.belgocontrol.be