Agenda item 1

Real examples of impact of windturbines on radar operations

Daan Rabijns, Belgocontrol

2 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

4 cases

1. measurable effects of a single turbine at 60 km from the radar

2. severe operational impact: Büchel (GE)

3. severe operational impact: Villancien (Fr)

4. example with tolerable operational impact

3 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

case 1: a single turbine (142m) at 60 km

4 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

case 1: measured impact

primary only

mode S only

combined

5 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

Case 2: unacceptable impact

No track initiation within the cells

Only update of existing tracks

100 200 300 400 500 600 700 800 900

100

200

300

400

500

600

ASR

Cells 200 x 200 m2

6 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

Radar

Case 2: example 1, Airliner FL350

wind turbine

plot (not shown to ATCO)

Track (shown to ATCO)

Track initiation delay: 3 scansCoasting : 3 scans

7 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

Radar

Case 2: example 1, Fighter Approach

wind turbine

plot (not shown to ATCO)

Track (shown to ATCO)

Track initiation delay: 3 scansCoasting : 3 scans

8 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

Case 3: turbines 34 km from the radar

4/6 turbines

142m

radar

test flight

9 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

Case 3: turbines 34 km from the radar

10 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

Case 4: tolerable operational impact

11 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

Case 4: tolerable operational impact

landing

aircraft

10 turbines

149m

aircraft

w/o

transponder

Cessna

12 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

Case 4: tolerable operational impact

13 Sustainable Energy – Sustainable ATC Surveillance Workshop Eurocontrol, Brussels, April 2010

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

Daan Rabijns

Belgocontrol

Tervuursesteenweg 303

B-1820 Steenokkerzeel

phone : +32 2 206 22 15

fax : +32 2 206 22 01

rad@belgocontrol.be

www.belgocontrol.be