Sodar (English spelling)

Japanese: ソーダー(英語表記)sodar
Sodar (English spelling)
Abbreviation of sonic radar or sound radar, also called sonic radar. A radar that uses sound waves instead of microwaves. By measuring the scattering of sound waves, it is possible to determine the temperature distribution in the atmosphere. In addition, wind speed can be measured by utilizing the Doppler effect. There are two methods: using the same measuring instrument for both transmission and reception, and using measuring instruments placed separately for transmission and reception. It is usually suitable for observations at heights ranging from tens to hundreds of meters.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
sonic radarまたはsound radarの略で,音波レーダーともいう。マイクロ波のかわりに音波を用いるレーダー。音波の散乱を測定することによって,大気中の温度分布などのようすがわかる。また,ドップラー効果を利用すれば,風速も測定することができる。同一の測器を送受信の両方に使用する方法と,送信と受信を離れた所に置いた測器で行う方法とがある。通常,高さの範囲が数十mから数百mまでの観測に適している。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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