為了克服光纖傳輸方式的缺點(diǎn)和采用視頻電纜傳輸方式的不足，解決在野外條件下實(shí)
現(xiàn)安全、高速通訊這個(gè)難題，本文建議引入基于普通雙絞線的寬帶通信技術(shù)——xDSL 技術(shù)。文章在介紹了xDSL 技術(shù)群的特點(diǎn)及其基本原理的基礎(chǔ)上，結(jié)合正在研發(fā)的遠(yuǎn)程視頻監(jiān)控系統(tǒng)和移動(dòng)通訊系統(tǒng)的實(shí)際情況，提出了已經(jīng)初步研發(fā)成功的基于ADSL 和HDSL 技術(shù)的系統(tǒng)級(jí)應(yīng)用模型。
關(guān)鍵詞：遠(yuǎn)程傳輸;xDSL;視頻監(jiān)控;ADSL;HDSL

Abstract: Based on an overall analysis of special conditions. The present thesis gives a
comparative study of the two principle long-range communication methods as well as points out the weakness involved in transmitting information by means of fiber or video cable. In order to achieve a safe and speedy communication, the paper suggests the adoption of the technology based on ordinary twisted-pair xDSL into the mine communication. At first, the paper briefs on the characteristics and basic principles of xDSL technology. Then, it puts forward the systematic application model.
Keywords: The long-range transmission; xDSL; The video supervision; ADSL; HDSL