電子通信技術在廣播電視信號源系統中的應用

邵勇 丁心慶 邵炳翔

摘 要：隨著我國科學技術的迅猛發展，電子通信技術得到了前所未有的進步，電子科技逐漸融入人們的生活。在先進科學技術的推動下，廣播電視技術也得到了長足的發展，產業革新的腳步越來越快。但是，就目前的廣播電視行業來看，還存在比較多的人工值守操作方式，自動化程度不高。在當前的經濟發展背景下，廣播電視必須朝著小功率、多布點、單頻同步覆蓋的方向發展，廣播電視設施的信號源系統由單一向多路備份，由單一模式向多元化模式轉化。本文以廣播電視的信號源系統作為切入點，結合實踐經驗，著重分析廣電發射設施信號系統的傳輸及自動切換相關技術要點，希望能推動廣播電視行業的產業進步。

關鍵詞：廣播電視；信號源系統；信號監視；自動切換

中圖分類號：TN943 文獻標識碼：A 文章編號：1003-5168（2018）23-0017-03

Application of Electronic Communication Technology in

Radio and TV Signal Source System

SHAO Yong1 DING Xinqing2 SHAO Bingxiang3

（1.Henan Zhengzhou 804 Medium Wave Broadcasting Station，Zhengzhou Henan 450000；2.Henan Science Equipment Supply Center，Zhengzhou Henan 450000；3.Henan Radio and TV Station 104，Zhengzhou Henan 450000）

Absrtact： With the rapid development of science and technology in China， electronic communication technology has made unprecedented progress， and electronic technology has gradually integrated into people's lives. Promoted by advanced science and technology， radio and television technology has also made considerable progress， and the pace of industrial innovation is faster and faster. But as far as the current radio and television industry is concerned， there are still more manual on-duty operation mode， the degree of automation is not very high， and there is a broader technical application space. Under the background of today's economic development， broadcasting and television must develop toward the direction of low power， multi-point distribution， single-frequency synchronous coverage. The signal source system of broadcasting and television facilities from a single to multi-channel backup， from a single mode to a diversified mode. In this paper， radio and television signal source system as a starting point， the author focused on the analysis of radio and television transmission facilities signal system transmission and automatic switching related technical points， hoping to promote the radio and television industry progress.

Keywords： radio and television；signal source system；signal monitoring；automatic switching

隨著科學技術的不斷發展，網絡科學技術、衛星通訊、各種有線無線的信息傳輸等相互交織，相互融合，形成了信息流通的主體構架。廣播電視發射作為一種傳統媒體，是該構架中的重要環節，在此構架的形成和發展中面臨著巨大的機遇和挑戰。廣播電視發射設備一般由信號源系統、發射機系統、天饋線系統和電力配電系統等組成。其中，信號源系統是廣播電視發射臺站從外界與其相關的信息傳輸中獲取所需要的信息，并進行選擇、加工、處理后將信息送入發射機系統。信號源系統一直是廣播電視從業人員研究的重要對象，對提高廣播電視信號發射質量及加強內容監管起著關鍵性作用。……