電子與通信工程專業英語（簡體書）

隨著科學技術的發展，專業英語的重要性也日益凸顯。本書的英文選編涉及電子與通信工程專業基礎課的主要內容，分上、下兩篇：上篇共13個單元，每個單元包含英文課文、關鍵詞、注釋、練習題和擴展閱讀資料：下篇是上篇中課文的參考譯文和相應的練習題答案。附錄是電子與通信工程專業常用英語詞匯及術語。
《21世紀高等學校規劃教材·電子信息：電子與通信工程專業英語》可作為高等學校電子與通信工程及相關專業的專業英語教材，也可作為廣大自學者的參考用書。·

鞏濤，三壽，知名動漫人，從事動漫行業多年，有著豐富的動畫和漫畫製作經驗，並多次參與中央電視臺和國內外跨國企業的動畫製作業務。作品多次在國內外的動漫大賽中獲獎，其中的漫畫作品在全國眾多知名雜誌期刊都有刊登，先後創作的《成精指南》、《捉魔人》、《撲克兔的故事》等漫畫、繪本作品深受青年人喜愛，其中的撲克兔表情更是被廣大網民所熟知。張予，錢江蓋飯 zhyhappy321，計算機圖形圖像策劃作者，擔任多個企業藝術顧問一職。有多年相關軟件的操作和培訓經驗，參與四十余本圖書策劃與編寫工作，多次以評委身份參加各大比賽，被全國多所院高校邀請授課。曾以ADOBE專家組成員為官方出過教材，所著圖書曾出口發行。·

《21世紀高等學校規劃教材?電子信息:電子與通信工程專業英語》可作為高等學校電子與通信工程及相關專業的專業英語教材，也可作為廣大自學者的參考用書。

上篇 電子與通信工程英文節選
unit 1 basic electronic devices
1.1 text
1.2 key words
1.3 notes
1.4 exercises
1.5 reading material
unit 2 analog circuit
2.1 text
2.2 key words
2.3 notes
2.4 exercises
2.5 reading material
unit 3 digital circuits
3.1 text
3.2 key words
3.3 notes
3.4 exercises
3.5 reading material
unit 4 digital signal processing
4.1 text
4.2 key words
4.3 notes
4.4 exercises
4.5 reading material
unit 5 digital image processing
5.1 text
5.2 key words
5.3 notes
5.4 exercises
5.5 reading material
unit 6 microwave technologies
6.1 text
6.2 key words
6.3 notes
6.4 exercises
6.5 reading material
unit 7 mobile communication
7.1 text
7.2 key words
7.3 notes
7.4 exercises
7.5 reading material
unit 8 satellite communications
8.1 text
8.2 key words
8.3 notes
8.4 exercises
8.5 reading material
unit 9 optical communication
9.1 text
9.2 key words
9.3 notes
9.4 exercises
9.5 reading material
unit 10 telecommunications network
10.1 text
10.2 key words
10.3 notes
10.4 exercises
10.5 reading material
unit 11 pbx system and signaling
11.2 key words
11.3 notes
11.4 exercises
11.5 reading material
unit 12 information security
12.1 text
12.2 key words
12.3 notes
12.4 exercises
12.5 reading material
unit 13 computer networks
13.1 text
13.2 key words
13.3 notes
13.4 exercises
13.5 reading material

下篇 參考譯文及練習題答案
單元1 基本的電子元器件
1．1 課文
單元2 模擬電路
2．1 課文
練習題答案
單元3 數字電路
3．1 課文
練習題答案
單元4 數字信號處理
4．1 課文
練習題答案
單元5 數字圖像處理
5．1 課文
練習題答案
單元6 微波技術
6．1 課文
練習題答案
單元7 移動通信
7．1 課文
練習題答案
單元8 衛星通信
8．1 課文
練習題答案
單元9 光纖通信
9．1 課文
練習題答案
單元10 電信網
10．1課文
練習題答案
單元11 程控交換系統與信令
11．1 課文
練習題答案
單元12 信息安全
12．1 課文
練習題答案
單元13 計算機網絡
13．1 課文
練習題答案
附錄a 電子與通信工程專業常用英文詞匯
附錄b 電子與通信工程專業常用英文縮略語
參考文獻·

The system offers both bent-pipe and store-and-forward two-way messaging capabilities,operating in the VHF (138～148MHz) band. User terminals are known as 'SubscriberCommunicators' (SCs). Although there have been significant problems with interference close tourban areas, this is not expected to impact offshore operations, and trials of the system have beenencouraging. Operational experience of the system is growing rapidly, although it remainsdifficult to obtain detailed technical information from Orbcomm.
The message structure currently consists of packets transmitted at 2400bps (scheduled torise to 4800bps), and coverage is now global and near-continuous between the polar circles.Messages are acknowledged by the system when correctly received and delivered to auser-nominated mailbox. The platform position is determined, if required, using propagationdelay data and doppler shift, or by an onboard GPS receiver. Position accuracy without GPS issimilar to that offered by Argos, i.e. km-scale.
The limitations on the store-and-forward mode messages (known as globalgrams) havebecome apparent, with SC originated messages limited to 229 bytes and SC terminated messageslimited to 182 bytes. Each SC can theoretically have a maximum of 16 globalgrams stored oneach satellite. Currently, satellites will not accept or process globalgrams when in view of aground ('gateway') station. As messages have to be designated as globalgrams or bent-pipe bythe SC at the moment of origination, this presently limits the flexibility of the system to adapt todifferent coverage situations. Work-arounds do, however, exist, and it is expected that the nextgeneration of SCs will be able to adapt more readily to changes in satellite communicationsmode.