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Diagram 17 RCS calculation for -163dB Path Loss (at LoS) 72.


163dB path loss would require an RCS gain at the turbine tip of 56dB to meet the sensitivity calculation shown at Diagram 17, equivalent to an RCS of 375m2 at the turbine tip, which is around 10x greater than the actual turbine blade would be would be expected to produce.


73.


Considering the rapid increase in path attenuation below the blade tip, the turbine would not be expected to be detected by the radar at the LoS height.


Preliminary Environmental Information May 2014


East Anglia THREE Offshore Windfarm


Appendix 0 Example Page 19


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