frequency channel 中文意思是什麼

frequency channel 解釋
【電視】頻道。

  • 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。
  • channel : n 1 水路，水道，渠，溝；海峽；河床，河底。2 （柱等的）槽，凹縫；【機械工程】槽鐵，凹形鐵。3 〈比...
  1. The ionosphere is a complex medium, which is aeolotropy, asymmetry, dispersive and changes randomly with time. in order to improve the communication quality of the shortwave that depends on the ionosphere, we should have aknowledge of the current condition of the ionosphere in real time. the backscatter sounding of high frequency can diagnose the real - time channel characters for shortwave communication or hf radar, which is great assistant to shortwave communication and hf radar

    電離層是隨機時變，各向異性，非均勻、色散的復雜介質。為了保證依賴于電離層進行的短波通信質量，必須了解電離層的實時狀態信息。高頻返回散射探測可以實時監測與短波通信或高頻天波雷達相關的天波傳播通道的狀態，對短波通信和天波雷達工作起了重要的輔助作用。
  2. The agc technology in the radio frequency channel is also studied

    研究了射頻通道中的自動增益控制（ agc ）技術。
  3. Ofta has issued a notice earlier to the satellite master antenna television ( smatv ) licensees, class licensees of in - building telecommunications systems, operatorsowners of in - building coaxial cable distribution systems ( ibccds ) ( including communal aerial broadcast distribution ( cabd ) systems, closed circuit television ( cctv ) systems, cable television ( ctv ) systems ) to alert the residents that they might need to adjust their vcrs or other equipments to avoid using channel 35 and 37 as radio - frequency ( rf ) output channel for connection to the television sets

    電訊管理局已就此事向本港衛星電視共用天線系統牌照持牌商、樓宇內置電訊系統類別牌照持牌商，以及大廈內同軸電纜系統營辦商擁有人（包括共用天線分佈系統、閉路電視系統、有線電視系統）發出指引，呼籲有關單位提醒其用戶如有需要可調整錄影機或其他器材，避免使用頻道35及37作為接駁電視機的訊號接收頻道。
  4. Radio - frequency channel

    射頻通道
  5. Capacity series and radio - frequency channel arrangement for analog microwave relay systems

    模擬微波接立通信系統容量系列及波道配置
  6. Finally the main parameters of the radio frequency channel are tested and the results are given

    最後本文對射頻通道的主要指標進行了測試，給出了測試結果。
  7. Each reader operates in a particular frequency channel of the authorised 2. 45 ghz ism band

    每一臺感應讀卡機都必須在不同的頻道下運作，不能有任何兩臺感應讀卡機使用相同頻道。
  8. In the running gear ( notebook computer, the 3g handset ) watch the cable tv or individual exclusive frequency channel

    在行動裝置（筆記型電腦、 3g手機）收看有線電視或個人專屬頻道。
  9. At present, using analogue technology, a whole frequency channel is needed for carrying one television programme

    目前，本港利用模擬技術進行廣播，需要一整條頻道才足夠傳送一個電視節目。
  10. Dynamic frequency selection dynamic channel selection dfs dcs

    動態頻率選擇動態通道選擇
  11. Calling a registered frequency when the automatic frequency selection function is not used. this example calls a frequency channel 01

    不使用自動頻率選擇功能時，調出已登記的頻率。該例調出01頻道的頻率。
  12. Therefore, during system design, cascade coding combining reed - solomon codes and convolutional codes is utilized ; in addition, time - direction and frequency - direction interleaves are added to alleviate channel fading

    因此在進行系統設計時，採用了rs碼與卷積碼的級聯編碼方案，並同時加入時間交織和頻率交織來對抗通道衰落。
  13. 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。
  14. The main works are as follows : firstly, we compare image enhancement in wavelet domain with that based on unsharp masking and indicate that there is intrinsic relation between them, namely they both enhance images by enhancing the high frequency coefficients. because after an image is decomposed in wavelet domain, every high frequency can be enhanced. however, if unshrap masking is used, only one high frequency channel is enhanced

    本文主要研究了基於小波多分辨分析的圖像去噪和增強，主要工作如下： 1將反銳化掩模與基於小波多分辨分析的圖像增強進行了對比分析，指出它們之間存在著內在的聯系，即兩者都是對與圖像邊緣細節對應的高頻實行增強，而且指出前者只不過是後者的一個特例，因為小波分解后，多級尺度多個高頻通道可得到增，而反銳化掩模僅增強了一個高頻通道。
  15. On double - frequency - channel water depth measurement technology in open diversion channel closure of tgp

    三峽工程導流明渠截流中雙頻水深測量技術
  16. " ri chen " fa shao grade tone frequency channel wire put to use nooxygen - copper to do wire, 75 same axises structure, physics send out of spongy pe insulator high density, much more tieas weaving to protect, enter pvc outcover, pure copper an nomagnetic gold - plating plug it ' s high grade cd, dvd tv tone frequency signal for a special wire, the effect is very good for family - film

    日辰發燒級音頻線採用無氧銅導體， 75歐同軸結構設計，物理發泡pe絕緣層、高密度、多層編織屏蔽保護，進口pvc外被，純銅無磁性鍍金插頭，是高級cd 、 dvd機音頻信號輸出專用線，配合使用高保真家庭影院系統效果更為明顯。
  17. By using video compression technology, dtv enables several television programmes to be digitally combined before they are carried on the same frequency channel

    藉著利用視頻壓縮技術，數碼電視能夠以數碼形式整合數個電視節目，然後以同一條頻道傳送。
  18. Capacity series and radio - frequency channel arrangement and equipment main technical specifications for 100 1000mhz radio relay communication systems

    100 1000mhz接力通信系統的容量系列波道配置及設備的主要技術要求
  19. When these faults occur they usually produce nonstationary vibration signals, by using wavelet packets transform on these signals, the fractal dimension of each frequency channel is extracted and the box dimension is used to depict the failure characteristics of vibration signals, and then the failure modes can be classified by radial basis function neural network

    以小波包分形技術作為訊號的故障特徵識別工具，將訊號分解成各自獨立的頻帶，然後計算每個頻帶訊號的盒維數，以盒維數量化的結果來描述系統之狀況。
  20. This paper particularly introduces each circuit schematics and terminal signal processing methods. the radio frequency channel is analyzed in detail

    對實現系統的各部分電路及終端的信號處理方法作了較為詳細的介紹。
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