地面數(shù)字電視應(yīng)急廣播技術(shù)探討與應(yīng)用

摘要：地面數(shù)字電視因其維護(hù)方便、建設(shè)成本低、易于普及等特點(diǎn)，在應(yīng)急廣播建設(shè)中獨(dú)具優(yōu)勢(shì)。文章介紹了國內(nèi)外應(yīng)急廣播的發(fā)展現(xiàn)狀，并對(duì)基于地面數(shù)字電視的應(yīng)急廣播應(yīng)用技術(shù)進(jìn)行了探討。

關(guān)鍵詞：應(yīng)急廣播；地面數(shù)字電視

doi：10.3969/J.ISSN.1672-7274.2023.04.041

中圖分類號(hào)：TN 949.197               文獻(xiàn)標(biāo)示碼：A               文章編碼：1672-7274（2023）04-0-03

Discussion and Application of Emergency Broadcasting Technology Based on Terrestrial Digital Television

LUO Yufei

（Shilingguan Microwave Station， Shanxi Radio and Television Radio Management Center， Xinzhou 034000， China）

Abstract： Digital terrestrial television has unique advantages in the construction of emergency broadcasting. This paper introduces the development status of emergency broadcasting at home and abroad， and discusses the application technology of emergency broadcasting based on terrestrial digital television.

Key words： emergency broadcasting; terrestrial digital television

1  國外應(yīng)急廣播的發(fā)展

1.1 日本的應(yīng)急廣播發(fā)展

日本是世界范圍內(nèi)地震活動(dòng)最為頻繁的國家之一，嚴(yán)重的地震和火山噴發(fā)影響著人們的生活。（剩余4341字）