Proceedings with Extended Abstracts (single PDF file) - Radio ...

0.65 d = 1.0730 λ = 0.3518mArray ResponseGain (dB)0d = 1.6507 λ = 0.5412 m0.8660 d = 1.4295 λ= 0.4682 mMeridional (deg)−60−3003060−5−10−15−200.5629 d = 0.9292 λ = 0.3047 m−60 −30 0 30 60Zonal (deg)−25Figure 4. The proposed TEP subarray array configuration. Subarrays are designed to mimic the original TEP configuration.Note that three subarrays are used which have a slightly different spacing from the original element spacing.TEP Configuration, Capon Method, Average SNR = 3 dB(1) Rec. 1−5(4) Rec. 16−20 (7) Rec. 31−35 (10) Rec. 46−50 (13) Rec. 61−65Meridional (deg)1050−5−10(16) Rec. 76−80(19) Rec. 91−95(22) Rec. 106−110(25) Rec. 121−125(28) Rec. 136−140Meridional (deg)1050−5−10−10 −5 0 5 10Zonal (deg)−10 −5 0 5 10Zonal (deg)−10 −5 0 5 10Zonal (deg)−10 −5 0 5 10Zonal (deg)−10 −5 0 5 10Zonal (deg)14 16 18 20 22 24 26 28Echo Power ( dB )Figure 5. A uniform wind field is simulated with original TEP array. This series of images show the power distributionobtained using Capon beamforming method with the original TEP array. Using the original TEP configuration, it canbe seen that there is a bird flying across the main imaged region in frames 1-7. As the bird continues to fly, it passesthrough a grating lobe toward the north and is seen as an angularly aliased signal in the maps (frames 10-28).52