In wireless communications, this refers to irregular and generally unpredictable radio waves that mix with desired radio waves and disrupt reception. Radio noise is classified into continuous noise and impulse noise, focusing on its waveform. Noise that lasts for a long time and changes slowly over time is called continuous noise, while impulse noise that lasts for a short time is called impulse noise. Radio noise can also be classified according to the cause of its generation. When the source exists in nature, it is called natural noise, and when it comes from man-made objects, it is called artificial noise. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
無線通信において,希望する電波に混入して,受信に妨害を与える不規則で,一般的に予測不能の電波のこと。 電波雑音は,その波形に注目して,連続性雑音と衝撃性雑音に分類される。継続時間が長く,時間とともにゆるやかに変化する雑音が連続性雑音であり,これに対して持続時間の短いインパルス状の雑音を衝撃性雑音という。 電波雑音はその発生原因から分類することもある。発生源が自然界に存在するとき,自然雑音と呼び,人工物によるとき人工雑音という。
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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