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unmanned aerial vehicle (2) |
airplane (1) |
airport (1) |
construction (1) |
detection (1) |
frequency (1) |
frequency range (1) |
L-39 (1) |
model (1) |
radar (1) |
unmanned aerial vehicle (2) |
airplane (1) |
airport (1) |
construction (1) |
detection (1) |
frequency (1) |
frequency range (1) |
L-39 (1) |
model (1) |
radar (1) |