radar horizon
A deserted medieval village and civil parish in County Durham, England. / A town in the Shire of Baw Baw, Victoria, Australia. / A hamlet in Saskatchewan, Canada.
(mathematics) The mean of two consecutive odd primes
A critical area of performance for aircraft detection systems, defined by the distance at which the radar beam rises enough above the Earth's surface to make detection of a target at low level impossible.
(Britain slang, derogatory) Synonym of spack (“clumsy, foolish, or mentally deficient person”)
その低空飛行のドローンは、レーダーの電波が地表から十分に上昇して低高度の目標を探知できなくなる距離の下に入り、管制官は接近に気付けなかった。
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DiQt
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