Last Updated
：2025/12/02
radar horizon
Noun
Japanese Meaning
航空機検知システムにおける重要な性能指標の一つ。具体的には、レーダーの放射波が地球表面から十分に上昇して、低高度にある目標（航空機など）の検出が不可能となる距離を示す概念。
（ plural ）
Quizzes for review
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.
音声機能が動作しない場合はこちらをご確認ください
See correct answer
radar horizon
The low-flying drone slipped beneath the radar horizon, leaving air-traffic controllers blind to its approach.
See correct answer
The low-flying drone slipped beneath the radar horizon, leaving air-traffic controllers blind to its approach.
音声機能が動作しない場合はこちらをご確認ください
English - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen the creation of new headword that may be duplicates
- Screen changing entry name
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
