radio-communication frequency 中文意思是什麼

radio-communication frequency 解釋
無線電通信頻率
  • radio : n. 1. 無線電訊[電報，電話]；無線電，射電。2. 無線電廣播；無線電（廣播）臺。3. 收音機。vt. ,vi. 用無線電傳送[廣播]；（向…）作無線電廣播[傳送]；用X射線拍照；用鐳醫治。
  • communication : n. 1. 通訊，通知；交換；信息；書信，口信，通報。2. 傳達，傳授；傳播；傳染。3. 交通，交通機關；聯系，連絡（設備）。4. 【宗教】接受聖餐。
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  1. On the base of researching the theory of the scheme and analyzing the signal feature, it is obtained that the existence manners and character of distance information in the differential frequency signal. at the same time, a new conclusion is gained that the technology of frequency agility can decrease the constant error of system. it is also to say that frequency agility and frequency modulation fixed - distance fuze has the similar feature to random period frequency modulation fixed - distance fuze. according to the theory of address coding in the hopping - frequency communication, the paper presents the principle of selecting the frequency agility sequence which fit to the radio fuze and constructs the frequency agility sequence family based on the rs codes

    在深入研究方案原理和分析信號特徵的基礎上，獲得了該體制引信差頻信號中，距離信息的存在形式和特點，得出了頻率捷變技術的引入降低了系統定距固定誤差這一新的結論，即頻率捷變調頻定距引信在定距性能上具有類似隨機周期調頻定距的特徵。本文引入跳頻通信地址編碼理論，結合無線電引信的具體特徵，提出了適用於無線電引信的頻率捷變序列的選擇原則，並構造了基於rs碼的寬間隔頻率捷變序列族。
  2. So it holds a ideal ability to anti - interference and has 2 scalar level resolution in location and measuring velocity than traditional radio induction technology. and the channel composed of the new radio induction system for communication is different from the parameter - constant channel and the traditional parameter - changing channel, its parameter is decided by the mutual induction between its antenna and induction - cable, by the location of its antenna, by the signal frequency passing through, its parameter has nothing to do with the time parameter. the channel composed of the new radio induction system is a new parameter - changing channel independently of time for communication

    而且，由新型無線感應系統組成的通道既不是恆參通道，也不是一般目前所知的變參通道，其通道傳遞函數的幅值只與信號的頻率有關，與系統中天線和感應電纜之間的互感和天線的位置有關，而與時間無關，其通道傳遞函數的相位只與天線的位置有關，而與時間無關，由新型無線感應系統組成的通道是一種不隨時間變化的新型變參通道。
  3. 6 type products whether one have whorl, card lock connection device of organization, it apply to post and telecommunications communication equipment, figure buy the line device extensively, the radio instrument waits until joining the coaxial cable of the radio frequency to use in the radio frequency return circuit, and can change each other with the products that iec60169 - 13 stipulate

    型產品是一種具有螺紋、卡鎖機構的連接器，它廣泛應用於郵電通信設備、數字配線裝置，無線電儀器等射頻迴路中連接射頻同軸電纜用，並能與iec60169 - 13規定的產品相互換。
  4. Digital intermediate frequency system is one of the hotspots in radio communication and military research, it provided a superexcellent way for high - speed double direction digital communication

    數字中頻系統是當前軍事與移動通信領域的研究熱點之一，它為高速雙向無線數據通信提供了思路與方案[ 1 ] 。
  5. Eventually, they discovered that the alternator in the car was operating at a frequency which was a multiple of that of the radio wave being used for communication

    最終，他們發現車上的交流電機運行的頻率正好是和交流電波頻率的整倍數
  6. Requirements and measurement methods of electromagnetic compatibility for radio communication equipment part 5 : radio frequency audio link equipment and wireless microphones

    無線通信設備電磁兼容性要求和測量方法.第5部分:無線語音鏈路設備和無線話筒
  7. Radio - frequency cables - part 3 : coaxial cables for digital communication in horizontal floor wiring - section 1 : detail specification for cables of 500 m reach and up to 10 mb s

    射頻電纜規范.第3部分:平面層布線數字通訊用同軸電纜.第1節:有效半徑達到500 m ，速率不低於10 mb s時電纜的詳細規范
  8. 10mb s radio - frequency cables - part 3 - 2 : coaxial cables for digital communication in horizontal floor wiring - detail specification for coaxial cables with solid dielectric for local area networks of 185 m reach and up to 10 mb s

    射頻電纜規范.第3部分:平面層布線數字通訊用同軸電纜.第2節:有效半徑達到185m速率在10mb s
  9. 10mb s radio - frequency cables - part 3 - 3 : coaxial cables for digital communication in horizontal floor wiring - detail specification for coaxial cables with foamed dielectric for local area networks of 185 m reach and up to 10 mb s

    射頻電纜規范.第3部分:平面層布線數字通訊用同軸電纜.第3節:有效半徑達到185m速率在10mb s
  10. I a hong kong degree in electronic engineering, communication and radio frequency engineering, control engineering, system engineering, computer engineering, information engineering, information technology or computer studies or equivalent ; and

    I a持有香港的電子工程通訊及射頻工程式控制制工程系統工程計算機工程資訊工程資訊科技或電腦學學位，或同等學歷及
  11. The future wireless mobile communication systems are expected to provide ubiquitous, high - quality, and high - rate mobile multimedia transmission. however, hostile multipath fading radio conditions give rise to serious inter - symbol interference ( isi ) ; even worse, wireless channel are often time varying, which makes the system more vulnerable and more difficult to track the channel state. orthogonal frequency dvision multiplexing ( ofdm ), which is inherently resistant against isi, has invoked a popular research interest in recent years, and has been a promising candidate technology of the physical layer for future weideband high - date - rate wireless communications. notwithstanding, ofdm is much more vulnerable to errors of both time and frequency synchronization and to that of channel estimation, and how to obtain correct timing and channel estimation efficiently is highly critical to ofdm systems. the dissertation will focus on both of the aspects of ofdm systems mentioned above

    但是無線環境的多徑特性造成通信系統中嚴重的符號間干擾，同時無線通道的時變性使得通道特性跟蹤復雜。而正交頻分復用技術（ orthogonalfrequencydivisionmultiplexing ， ofdm ）正是一種解決符號間干擾的有效傳輸手段，因此ofdm技術作為未來寬帶高速率無線通信的物理層候選技術在當前引起了一股研究熱潮。但ofdm系統對定時同步誤差和通道估計誤差非常敏感，如何在ofdm系統中準確快速地實現符號同步和通道估計是至關重要的，本論文將重點針對這兩個問題進行討論。
  12. With the development of social economy and science technology, rf ( radio frequency ) card technology is more broadly applied by all kinds of trades, specially such as mass transit, wireless communication identify finance trade and safety - defend etc we use usually magnetic card or touch ic ( intelligent card ) in the past, but the shortage is that the card is read - write low efficiency frictional waste and short life, so that it ca n ' t guarantee the reliability of system for long term running

    隨著社會經濟和科技的發展，射頻卡技術越來越廣泛地應用於各種行業，特別是公共交通、無線通信、身份識別、金融交易和安全防衛等行業。過去，智能卡應用領域常採用磁卡或接觸式ic卡，但由於讀寫速度慢，易磨損，使用壽命短，無法保證系統長期運行的可靠性和方便性。
  13. Along with the development of the technology of the wireless communication particular the modern modulation and software radio technique, meantime the employ of wireless frequency are more presser, the development of the receiver tend towards high performance and high integration

    隨著無線通信技術特別是現代調制體制和軟體無線電技術的快速發展，且無線頻譜的擁擠程度日益加劇，無線電接收機在設計和實現上越來越趨向于高性能、高集成度方向。
  14. And people are getting close touch with the mobile communication in the daily life. for the sake of each corresponding using the available frequency source and increasing mobile communication net, radio electric cover frequently adopts the frame of tiny honeycomb

    為了充分地利用現有的頻率資源和增加移動通信網的容量以達到個人通信的目的，目前的移動通信系統的無線電覆蓋常採用微蜂窩的結構。
  15. The communication media can be power line, infrared, radio frequency, twistedpair, etc, among which power line communication technique is discussed

    物理介質可以採用電力載波、紅外線、無線電、雙絞線等。本文主要論述採用電力載波的信息編碼格式，載波擴頻技術等。
  16. Radio frequency cables. part 3 - 2 : coaxial cables for digital communication in horizontal floor wiring. detail specification for coaxial cables with solid dielectric for local area network of 185 m reach and up to 10 mb s

    射頻電纜.第3 - 2部分:水平地板配線數字通信同軸電纜. 185 m等於和最高可達10兆位元組秒局域網固體電介質同軸電纜詳細規范
  17. Radio frequency cables. part 3 - 3 : coaxial cables for digital communication in horizontal floor wiring. detail specification for coaxial cables with foamed dielectric for local area network of 185 m reach and up to 10 mb s

    射頻電纜.第3 - 3部分:水平地板配線數字通信同軸電纜. 185 m等於和最高可達10兆位元組秒局域網泡沫電介質同軸電纜詳細規范
  18. This series of products also claim that " m " was connected, it clenched the teeth after adopting the end tooth, the whorl is joined, it suitable radio communication, cellular telephone and office land network make electric signal transmit and join radio frequency cable spend among a small circle

    該系列產品亦稱「 m 」接頭，它採用了端齒嚙合，螺紋連接，它適用無線電通訊、移動電話及小范圍局域網路作電信號傳輸連接射頻電纜之用。
  19. Our company specializes in manufacturing and selling cca and cps, which are widely used in catv, radio communication, coaxial cable of catv, flexible coaxial radio frequency cable, audio frequency, video wire, data transmission cable, car signal cable, network connecting cable and other signal transmission cable and applications

    公司的主營業務為銅包鋁線（ cca ）和銅包鋼線（ cps ）的製造和銷售，主導產品廣泛用於: catv 、無線電通訊、柔型同軸射頻電纜、音頻、視頻線、數據傳輸線纜、車輛信號線纜、網路連接線纜、其它信號傳輸線纜和其它領域。
  20. Now the development in radio communication system and sensors productively need saw devices of high performance and high frequency. but electromagnetic interference of saw device is evident day and day. so the saw device technologies of the electromagnetic interference and electromagnetic compatibility in its process of design, fabrication and production must be considered. the demand request saw designer of second order effects which are not considered in low frequency

    當前在無線通信系統和傳感器方面的進展預示了需要高性能、高頻的saw器件，但是隨著其工作頻率的提高， saw器件電磁干擾問題日益突出，因此saw其電磁兼容技術在設計、研製和生產過程中是必須考慮的。
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