distance measuring equipment

Japanese: distance measuring equipment（英語表記）distancemeasuringequipment

…A device that informs pilots of the distance from an aircraft to a specific ground station. It is usually called DME, which stands for distance measuring equipment. It is a type of secondary radar, and when a ground station receives a query wave from an aircraft, it automatically transmits a reply wave, measures the round-trip time it takes for the wave to reach the aircraft, converts this into distance, and displays it digitally on the aircraft's display. …

From [Air Safety Radio Facility]

…Recently, it has been used mainly in combination with an ILS. DME stands for distance measuring equipment. DME is a type of secondary radar that transmits a response pulse when it receives an interrogation pulse transmitted from an aircraft. …

*Some of the terminology used in reference to "distance measuring equipment" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…航空機から特定の地上局までの距離情報をパイロットに知らせる装置。通常distance measuring equipmentの頭文字をとってDMEと呼ばれる。一種の二次レーダーで，機上からの質問波を受けた地上局が自動的に応答波を発信，それが機上に達するまでの往復時間を計り，これを距離に換算して機上の表示器にディジタル表示する。…