Last Updated
：2025/12/06
Christmas tree effect
Noun
Japanese Meaning
航空機のレーダーが限定的な方向性を持つため、地面からの強いエコーを受信し、目標信号をかき消し、三角形のパターンのレーダー描写を生み出す現象。
（ plural ）
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(aviation) The phenomenon where an aircraft's radar with limited directional capabilities receives strong echoes from the ground, swamping target signals and generating a triangular radar trace.
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Christmas tree effect
During low-altitude approaches over uneven terrain, pilots must be aware of the Christmas tree effect that can mask true targets on their radar.
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During low-altitude approaches over uneven terrain, pilots must be aware of the Christmas tree effect that can mask true targets on their radar.
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