track carrier 中文意思是什麼

track carrier 解釋
履帶提架
  • track : vt 用纖拉船。vi 拉纖行駛。n age 拉纖。n er 拉纖的人。n 1 軌跡,輪跡,航跡,痕跡;〈pl 〉足跡。2 ...
  • carrier : n 1 運送人,搬夫;負荷者;使役,〈美國〉信差,郵遞員;送報人;〈英國〉運輸行,運輸業者。2 傳書鴿...
  1. Through embedding watermark information into audio carrier, the function of copy restriction, use track and the pirate confirmation can be realized

    通過在音頻載體中嵌入水印信息,可以實現拷貝限制、使用跟蹤、盜用確認等功能。
  2. The principle and structure of pll ( phase - locked loop ), including fll and loop filter, are analyzed and described. the module of carrier synchronization in the all - digit ds - qpsk receiver was carried out in the fpga chip. the problem about the estimation and track of the correlative carrier frequency under high dynamic circumstances was resolved very well

    針對某遙測遙控全數字接收機的研製,對相干載波同步中的鎖相環、鎖頻環、 dpll 、本地nco等進行了詳細的分析和優化設計,在fpga上實現了高動態全數字ds - qpsk接收機中的載波同步模塊,解決了大范圍和動態多普勒頻移下接收機的相干載波提取與跟蹤問題。
  3. The content of this theme is as follows : without time, without open, without stopping railway transport, and without interrupting traction current of block tested, meanwhile track circuit parameters in electrical and no electrical blocks is measured of on - line, dynamic and real - time. these parameters include voltage of fsk signal, voltage of industrial and harmonic wave interference, upper frequency, lower frequency, carrier frequency and low frequency 18 messages frequency

    本課題研究內容:在不要點,不開天窗,不中斷行車,不中斷被測區段牽引電流的情況下,在線、動態、實時測量電化區段和非電化區段的移頻信號電壓、工頻干擾電壓,移頻信號(調頻信號)的上邊頻、下邊頻、載波頻率、以及低頻18信息頻率等參數。
  4. In this paper, we are going to use high speed digital signal processor, track the carrier wave through the digital phase locked loop, and so to demodulate the modulating signal. it can overcome the difficult problems of the other ways

    而我們這里就是準備用高速數字信號處理器,利用數字鎖相環實現對載波的跟蹤,從而實現調制信號的解調,它能有效克服其他解調方式所遇到的困難。
  5. On the basis of the former research works, we present the detecting method as follows : for the narrow band characteristic of the track signal we use under - sampling instead of nyquist sampling to reduce the sampling rate. as to the carrier frequency, the spectrum of the 18 - information frequency - shift track signal has two peaks, then the carrier frequency is the average of the two peak frequency, to um - 71 jointless track signal, it has only one peak, then the carrier frequency is the peak frequency

    針對移頻軌道信號的窄帶特性提出了使用欠采樣技術代替奈奎斯特采樣的方法,以降低信號的采樣頻率;國產18信息移頻軌道信號頻譜具有雙峰,雙峰頻率平均值就是信號的載頻頻率,而um - 71無絕緣軌道信號頻譜單峰,峰值頻率即為信號的載頻頻率。
  6. In case where long - range communication is needed, spatial diversity blind equalizer ( sdbe ) is an effective way to improve snr and suppress distortion. joint carrier phase recovery with sdbe using second order digital phase lock loop is presented to track the doppler shift, and a kind of quantization method is used to reduce the complexity of the multi - channel algorithm. its performance is very similar to the original one

    模擬結果表明,採用二階數字鎖相環的空間分集均衡演算法的跟蹤性能超過了採用一階鎖相環和未加鎖相環的演算法,可有效補償由於水聲通道時變而引入的載波相位快速變化;採用誤差量化的演算法和原演算法的收斂和踉蹤性能都很接近。
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