sdr 中文意思是什麼

sdr 解釋
SDR ＝Special Drawing Rights （國際貨幣基金組織的）特別提款權。

  1. The value of sdr special drawing right is the sum of the values of specified amounts of the following currencies : us dollar, deutsche mark, japanese yen, france franc and pound sterling

    特別提款權的價值是以下貨幣的指定款額的價值之和：美元德國馬剋日圓法國法郎和英鎊。
  2. Gold is no longer the unit of account of the sdr

    黃金不再是特別提款權（ sdr ）的計算單位。
  3. Specification for chlorinated poly vinyl chloride plastic pipe sdr - pr

    氯化聚氯乙烯塑料管的規范
  4. This thesis focuses on application of sdr to a transmitter

    本文主要研究軟體無線電在發射機中的應用。
  5. Digital down converter is one of the key technology of the sdr

    數字下變頻是軟體無線電中的關鍵技術之一。
  6. Abs sdr - pr specification for acrylonitrile - butadiene - styrene plastic pipe sdr - pr

    丙烯腈-丁二烯-苯乙烯共聚物
  7. Sdr sdram single date rate

    單數據率
  8. Cancellation of sdr

    取消特別提款權
  9. Cognitive radio is arriving on the heels of sdr technology and building on it

    感知無線電緊跟在sdr技術后出現，以其為設計基礎。
  10. Synchronization is also one key technology of sdr in the receiver system

    同時在接收系統中同步問題也是軟體無線電中的一個關鍵技術。
  11. Due to the hardware characteristic ' s limitation, such as the poor speed of a / d, d / a conversion and dsp process, the most part of sr system adopt middle course. that is to say, by using the special digital converter or running relevant arithmetic, it converts the radio signal to intermediate frequency signal and completes the base - band signal process that is n ' t the veriest sr and is named " software defined radio ( sdr ) "

    由於受到硬體性能如a d 、 d a及dsp晶元處理速度的限制，目前的軟體無線電系統多採用折中的實現方案，增加專用的數字變頻器或者運行數字變頻演算法，將射頻信號變頻到中頻，然後再進行基帶信號處理，這樣的軟體無線電系統又被稱之為「軟體定義無線電」 ，它並不是真正意義上的軟體無線電。
  12. First, how to conduct sample and quantification of continuous time signal which is prior condition of sdr is explored in detail, and the comparison and analysis of some sample modes are given in which band pass signal sampling theorem is most important. second, multi - sample rate signal processing which is an important basis of sdr is studied. emphasis are put on decimation and interpolation those are the most fundamental process and the realization of decimation and interpolation filter

    在基於中頻采樣的軟體無線電結構框架下，首先詳細探討了軟體無線電的前提條件，即如何對連續時間信號進行采樣量化，比較分析了幾種采樣的方式，其中最為重要的是帶通信號采樣定理；然後探討了軟體無線電的一個重要基礎，即多采樣率信號處理，重點討論其最基本的兩個過程抽取和內插以及抽取器和內插器的實現；接著介紹了結構簡單、適用於一級抽取的cic濾波器和適用於做2倍抽取的半帶濾波器；再次論文在總結了傳統的調制解調基礎上，結合軟體無線電器件的特點，系統的探討並實現了基於正交思想的am 、 fm 、 ask 、 fsk 、 bpsk 、 qpsk的正交調制解調演算法。
  13. Special drawing rights is an international currency unit set up by the imf. the current us dollar equivalent to 1 sdr is about us 1. 30

    （特別提款權（ specialdrawingrights簡稱sdr ）是國際貨幣基金組織制訂的國際貨幣單位，現時1sdr的面值約為1
  14. Special drawing rights ( sdr ) is an international currency unit set up by the imf. the current us dollar equivalent to 1 sdr is about us $ 1. 30. )

    （特別提款權（ specialdrawingrights簡稱sdr ）是國際貨幣基金組織制訂的國際貨幣單位，現時1sdr的面值約為1
  15. First, the theory and structure of swr is expounded, then software and hardware models of the base station, which use the sdr structure of wideband and band - pass sampling in if ( intermediate frequency ), are put forward

    首先介紹了軟體無線電的概念、特點、基礎理論和基本構成，推導了軟體無線電的數學模型，然後在此基礎上詳細討論了基於寬帶中頻帶通采樣軟體無線電結構的移動通信基站的硬體和軟體的設計方案。
  16. First, the structure of sdr and the physical - channel of td - scdma are expounded, then software and hardware models of the terminal receiver, which use the sdr structure of wideband and bandpass sampling in if ( intermediate frequency ), are put forward

    首先對軟體無線電的組成結構和td - scdma物理通道進行了闡述，在此基礎上提出了基於寬帶中頻帶通采樣軟體無線電結構的td - scdma終端接收機的軟硬體模塊設計方案。
  17. On the basis of this theory, the applications of the sdr structure of wideband and bandpass sampling in if ( intermediate frequency ) in flight test were offered : increase the sampling in if ( intermediate frequency ) in flight test were offered : increase the capacity of the transmitter and the terminal receiver channels without changing the apparatus of original system and on the conditions of obeying the standard remote sensing

    首先對軟體無線電的組成結構和飛行測試中實際使用的通道進行了闡述，在此基礎上提出了基於寬帶中頻帶通采樣軟體無線電結構在飛行遙測測試中的應用，在不改變原系統設備的情況下，在遵守遙測標準的前提下，提出增加機載發射機和接收機通道容量的設計方案。
  18. Sdr can make the wireless communication system have a good flexibility and generality. also, the interlinkage and update of the system will be very convenient

    軟體無線電使得無線通信系統具有很好的通用性和靈活性，使系統的互聯和升級非常方便。
  19. Sdr not only can make the wireless communication system have a good flexibility and generality, but also can make its interlinkage and update of the system very convenient

    軟體無線電使得無線通信系統具有很好的通用性和靈活性，使系統的互聯和升級非常方面。
  20. The current exchange rate of 1 sdr against us 1. 39 is used here. hong kong monetary authority

    本新聞稿採用現行的兌換率，即個特別提款權兌美元。
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