received signal 中文意思是什麼

received signal 解釋
接受信號
  • received : adj. 被容納的，被接收的，被公認的；標準的。 R- Standard English 標準英語。 the received text （of a book） （某書的）標準版本。
  • signal : n 1 信號，暗號；信號器。2 動機，導火線 （for）。3 預兆，徵象。adj 1 暗號的，作信號用的。2 顯著的...
  1. In this modified algorithm, channel estimation is made by dispreading the received signal of dpcch with a corresponding long gold sequence and pilot ovsf, followed by averaging

    本文將dpcch中的導頻信號解擾、解擴，再將它們與已知導頻信號相乘得到的通道估計值進行平均，從而得到最終的通道估計值。
  2. In the digital mobile communication, with the effect of modulation, transmission channels and demodulation, the received signal ineluctably has some distortion. frequncy offset is one of them

    在移動通信系統中，信號經過調制發射、通道傳輸和接收解調的過程中，不可避免的會引入一些干擾，使得有用信號受到影響。
  3. Measuring frequency of received signal by a spectrum line ratio method

    譜線比值法測量接收信號的頻率
  4. Friendly interface, lcd received signal strength and signal quality

    友善的操作界面，液晶顯示接收信號強度及信號質量
  5. The purpose of this paper is to improve the received signal by study of the polarization character of target in snow clutter and finding the optimum polarization states of antennas

    運用拉格朗日乘子法求出了收發天線的最佳極化方式以增強信號抑制雜波干擾。
  6. In communications, a device that automatically transmits a predetermined signal when activated by a received signal

    通信技術中使用的一種設備，在接收到激勵信號后該設備能自動發送預先確定好的信號。
  7. A large amount of experience data accumulated through long term operation is introduced. combined with the definition of relative requirements, the choosing and definition of operation index of high - frequency channels specially used for protection of hubei electric power network are discussed and elaborated through calculation and analysis such as input impedance and channel impedance of transmitter, sensitive voltage of received signal, redundancy of received signal, warning of channel redundancy and warning of channel faults etc

    引用了長期運行中積累的大量經驗數據，通過計算分析，結合有關規程規定，探討和闡述了湖北電網繼電保護專用高頻通道諸如收信機輸入阻抗及通道阻抗、收信靈敏電平、收信裕度、通道裕度告警、通道異常告警等運行指標的選取和確定。
  8. In wcdma system which uses direct sequence to spread spectrum, the spread spectrum code ( pn code ) phase of the receiver must be synchronized with that of the received signal precisely to despread and demodulate the signal correctly. multipath channel exists in the mobile communication environment for the radio signal reflection by obstacles between transmitters and receivers. by using the autocorrelation of the spread sprectrum code, rake receiver can process received signals and therefore multipath components can be resolvable

    在wcdma系統中，為正確解擴解調接收到的擴頻信號，接收機本地產生的擴頻碼（ pn碼）相位必須和接收信號中的擴頻碼相位完全同步;同時移動通信環境中的傳輸信號由於接收機和發射機之間的直達路徑有可能被建築物或其他障礙物所阻礙，總是經過折射或反射的多條路徑后才到達接收機，從而產生多徑通道。
  9. Secondly, the dissertation presents a 3 - dimensional searching method with afc and pn code synchronization and adaptive array convergence in order to accurately estimate the frequency difference between the received signal and the local oscillator

    其次，為了準確估計接收信號和本地振蕩器之間的頻差，提出了afc 、 pn碼同步、自適應陣收斂的三維搜索策略。
  10. Pn acquisition involves coarsely aligning the local replica generated in the receiver with that of the received signal and pn tracking is to realize the synchronization accurately, so pn acquisition is the emphasis and difficulty of pn synchronization

    序列捕獲實現擴頻序列的粗同步，序列跟蹤實現擴頻序列的精確同步，序列捕獲是擴頻序列同步的重點和難點。
  11. There are two uncertain factor about it : the phase of the pn code and the doppler - shift. after capturing the received signal successfully, the traditional ds receiver always uses a delay locked loop ( dll ) to synchronize the pn code and then uses a costas loop to realize the carrier synchronization. this complex closed - loop structure not only take long time to realize the synchronization, but also has the defect of “ hang up ”

    傳統的擴頻接收機通常在捕獲偽碼信號后利用遲早門鑒相的延時鎖定環來實現偽碼的精同步，解擴后利用科斯塔斯環實現載波同步，這種閉環結構不僅同步時間長、結構復雜，而且鎖相環還存在所謂的「 hang - up 」現象。
  12. Other than traditionally theory analyze and discussion of digital correlator which is laid after demodulator, a scheme based on non - interrelated correlative dll will be discussed in this paper after referencing the theory and the result of simulation. the demodulated data and the information of carrier are not need in this plan. we sample the result of correlation between local sequences and the received signal, then realizing the code synchronization by software

    不同於一般的理論分析以及解調后數字相關器的討論，本文通過理論分析與模擬結果，選用了非相干相關同步的基本結構，並加以改進，不需要解調和載波的信息，將本地序列與接受信號直接相關后進行采樣，通過軟體的方法，實現同步。
  13. Secondly, we apply tk operator to the cross - correlation of received signal code and pn code to separate the multi - paths. it comes to a conclusion that tk operator can separate the multi - paths within less than the chip period accurately of spread - spectrum system with space - modulation by simulation. at last, we apply this algorithm to the practical signal collected by gps tap, and from the result we can drop a conclusion the tk algorithm is practical

    本文首先闡述了時空調制擴頻信號原理以及在多徑干擾下時空調制接收機的性能和teager - kaiser接收機的原理;接著對時空調制擴頻系統的解調信號與偽碼的互相關函數採用tk接收機進行多徑分離，模擬結果表明， tk接收機對時延在一個碼片內的時空調制擴頻通信多徑信號有很好的分離效果;最後用數據採集器對一個gps信號進行接收和多徑的估計，驗證了該演算法在實際的運用中對多徑的擴頻信號有很好的分離效果。
  14. At last, in the circumstances of a wide - band radar is used for target detection, the length of received signal is much longer than that of the transmitted pulse signal. because the traditional matched filter collects only a small part of the energy of received signal, it is not good for detection. the generalized matched filter is obtained by improving the traditional matched filter and can collect all energy of received signal, which is good for detection

    最後，在寬帶條件下，雷達發射脈沖信號，雷達的目標回波的時間長度要遠遠大於發射信號的時間長度，傳統的匹配濾波只能收集一部分回波信號的能量，這對于檢測電磁散射比較弱的目標是不利的，而廣義匹配濾波對傳統的匹配濾波進行改進，可以將目標回波的全部能量收集起來以提高檢測性能。
  15. The data recovery at the receiver requires the spreading codes. in sess system, the receiver doesn ’ t know which spreading code will be used, so first it must de - spread the received signal correctly to regenerate the spreading code

    自編碼擴頻系統的擴頻序列是接收端事先未知的，不能用事先設計的本地擴頻序列產生器產生，需要由恢復的數據獲得。
  16. Because of the different time delay among multi - paths, the received signal undergoes frequency - selective fading

    由於多徑干擾之間具有不同的時間延遲，接收信號將承受頻率選擇性衰落。
  17. An alternative to traditional pipe detection method is to excite stress waves, which can propagate along the pipe, and to monitor the response of the pipe for changes in the received signal at some remote positioa an ultrasonic inspection technique using guided waves was applied to detect and determine the exact location of flaws in long steel pipes

    而傳統無損超聲檢測技術是單點檢測，因而，在檢測長距離管道時，這種方法遇到很大困難。而利用縱向超聲導波檢測管道缺陷，激勵導波沿管道傳播，通過監測管道回波的變化，達到一次檢測數十米的管道範圍，並且是全范圍檢測。
  18. Quartered demodulating technology is widely applied in modern if receiver because it can extract phase and amplitude information from the received signal. the quadrature demodulating component in traditional receiver was implemented with analog circuits

    在現代雷達系統中，寬帶雷達信號應用的越來越廣泛，相應地，通過數字信號處理的方法來處理超寬帶雷達信號，需要高速的數據採集系統來提取信息。
  19. The distorted portion of a received signal

    接受到的信號被扭曲的部分
  20. Horizontal received signal analysis of a compact aerosol lidar

    小型氣溶膠激光雷達水平大氣回波信號分析
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