useful signal 中文意思是什麼

useful signal 解釋
有用信號
  • useful : adj. 1. 有用的，有益的，有效的，有幫助的。2. 〈俚語〉值得稱贊的，精通…的 （at）。adv. -ly ,-ness n.
  • 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. It is the first time that the theory of wavelet has been applied in the signal processing of the codog power plant experiment rig and wavelet transform denoising was used, it may keep the aiguille and saltation parts, wipe off the noise and pick up the useful signal, it is benefit to analysis the result in experiment

    把小波分析理論應用於codog實驗臺信號處理中，用小波變換進行信號消噪，可以很好的保存有用信號中的尖峰和突變部分，將信號的噪聲部分去除，從中提取出於有用信息，更有利於實驗結果分析。
  2. In the design and application of electronic engineering, both in open circuit and in closed circuit, signal is certainly affected by environment, the status of the transport network and the change of the parameters of the components applied. then the characters of useful information will be changed more or less and the change is generally called as distortion, namely so - called signal distortion

    =在電子工程的設計和應用中，信號無論在開路傳輸或閉路傳輸中都受到環境、傳輸網路的工作狀態和應用的元器件參數變化的影響，從而會或多或少地改變有用信息的性質，這種變化就是所謂的信號畸變現象，通常稱作失真。
  3. Hi this thesis, the technique of detector array is used to obtain the location of anomalous infrasound, it is the basic of the study of prediction of earthquake. to derive useful information by using spectrum analysis on infrasonic signal. then combing with other methods a forecast could be made

    本課題主要是利用數字技術，採用用傳感器陣列計算異常次聲波波源的方位，這是今後預測震中位置研究的前提；並對次聲信號進行頻譜分析，提取有用的關于臨震次聲方面的信息，再結合其他的預報方法，作出準確的地震預報。
  4. This method gets rid of the interferential signal successfully but does not lose useful signal

    該方法能有效地去除干擾信號，又不會損失有用信號。
  5. The purpose of signal processing is to suppress or get rid of the interferential part, and display or pick - up useful information

    信號處理的目的就是最大限度去除或抑制與所研究對象無關的那部分干撓，突出或提取有用信息。
  6. As the key block of the wireless communication transmitter in rf, it is very useful in improving the output power and efficiency, lowering the loss of the supply, lowering the size and the weight, lengthening the time of communication. class e power amplifier which is suitable to amplify envelop signal is very important in modern communication system

    功率放大器（ pa ）作為無線通信射頻發射機中不可缺少的關鍵電路，對于提高手機的功率效率、降低電源損耗、減小體積重量、延長通話時間有著舉足輕重的作用，而適用於恆包絡信號放大的e類功率放大器，更是在現代通信系統中佔有十分重要的地位。
  7. A mathematic model of the motor is builded and emulated through matlab. the low - speed and constant - torque, high - speed and constant - power state is analyzed and researched, also the software approach of simulation to the driver has been done, a digital signal processor tms320lf2407 is developed successfully to control the perm square - wave bldcm driving airscrew of solar powered unmanned engine. it is useful to the further study

    在matlab下建立了電機的數學模型，通過計算機模擬，驗證了數學模型的正確性，同時在理論上對低速恆轉矩高速恆功率運行進行了分析與研究，提出了一種用模糊控制的方法實現恆功率控制，並對驅動器進行了系統模擬，成功的研製了以數字信號處理控制器tms320lf2407為控制核心的驅動器，控制無刷直流電動機驅動太陽能無人飛機的螺旋槳，為後面繼續研究工作提供了參考。
  8. This show us a very useful signal in studying the systematic property in the early stage of the evolutive colliding system, that ' s, a non - zero flow component of those particles observed by experiment could be interpreted as a signal for partonic flow

    因此在碰撞早期產生的重子數輸運是高能重離子碰撞中的一個重要的物理量，它影響著初態部分子的平衡，粒子的產生，系統的熱力學或化學平衡以及集體膨脹等過程。
  9. Based on discussion of sar high resolution and theoretical imaging model and existent simulation of sar digital processing, a more convenient and useful model is built that realizes dialogue between man and computer and has a interface of adding noise signal

    該課題的研究使sar的接收處理過程在計算機上得以實現，並且方便應用於今後的機載sar研究和電子對抗研究工作，具有一定的參考和應用價值。
  10. Eventually, the filtering program which can successfully take the useful fault signal out from the background with strong noise is designed

    對圖象數據的處理採用turboc + + 3 . 0作為編程工具，成功地設計了在強噪聲背景下將微弱的有用信號提取出來的濾波程序。
  11. So how to select threshold effectively to avoid lose useful signal is problem worth to research. some research is processed here on the problems above as follow : ( 1 ). in exordium the research purpose and means is introduced

    因此，在去噪的過程中如何更有效地進行閾值選取，使得噪聲被去除的同時盡可能的避免有用信號的丟失，也是一個值得研究的問題。
  12. Under the research of the characteristic of three classical analog filter with simulation software - matlab, this paper devised lowpass circuit that not only can keep the useful signal out of distortion but also benefits the following sample tache and filter tache

    用matlab分析了三種經典模擬濾波器的濾波性能，設計出了能保持有用信號不失真又有利於後面的采樣和數字濾波環節的低通電路。
  13. A matrix is useful when connections must be made between several signal sources and a multipin device, such as an integrated circuit or resistor network

    當需要在幾個信號源和一個多連接端子的裝置（例如集成電路或電阻網路）之間建立連接時，矩陣開關就非常有用。
  14. The " expanding in frequency domain " theory is put forward and validated, and the chaos theory and the fractal theory is applied to the detection and diagnosis of boiler tube leak, the separation between the useful signal and noise and some of problems existed in the present boiler tube leak detection are solved

    提出了「頻域拓展」的概念，並對這一方法的正確性進行了驗證。將混沌與分形理論引入鍋爐爐管泄漏檢測與診斷中，完成了爐管泄漏聲信號的信、噪分離，解決了目前爐管泄漏檢測系統所存在的一些問題。
  15. First please make sure the useful signal has very good snr before you input it to amplifiers chain, then you can calculate how much gain and nf you need to get the targeted signal amplitude and noise level, based on this you can choose the right components to design amplifiers chain

    后才將其輸入放大器鏈，接著計算獲得目標信號振幅和噪聲水平所需的增益與nf的大小，最後根據這些數據選擇合適的器件設計放大器鏈路。
  16. Assigning serial different address code to different subscribers, useful signal is taken out of the same time slot and frequence, and is transmitted with one share channel. at received end, system makes use of completed address code from sending end to do correlative check and take out useful subscriber signal. the other address code signals are treated as broadband disturbing signal which is removed. in radio environment of existing variable disturbtion and muti - way declining, expand frequence signal ’ s broadband characteristics can improve system performance obviously. cdma mobile telecommunication system has some better characteristics, such as anti - disturbing 、 anti - way declining 、 secrecy 、 capacity 、 utilizing rate of frequence resource and so on, than other mobile telecommunication system

    Cdma （ codedivisionmultipleaccess ）移動通信系統的技術基礎是基於擴頻技術的碼分多址，通過給不同的用戶分配各自特定的地址碼序列，將處于相同時隙和頻率的用戶信號分離開來，採用共享通道方式傳輸信息。在接收端，系統利用與發送端完全一致的本地地址碼對接收信號進行相關檢測，提取需要的用戶信號，而將其他使用不同碼型的信號視為寬帶干擾而從中剔除掉。
  17. On this basis, the wavelet decomposition established on the time - domain correlation detection method provides a feasible scheme that improves performance, in a situation when it is impossible to design the pre - filter because the frequency band of the useful signal is unknown

    本文在此基礎上加以擴展，分析了dsss / bpsk信號的高階統計量，並以此為基礎進行檢測。 4 .倒譜分析和周期譜分析近年來被廣泛應用於對dsss / bpsk信號的研究。
  18. In view of drive - response chua ' s circuit chaotic synchronization system, chaos synchronization self - maintenance is put forward in this thesis, it solves the present problem of how to stimulatingly transmit useful signal and chaos synchronization control signal in the same one channel, as a result, it establishes the groundwork of putting chaos into practical application of engineering and communication field

    本文針對驅動?響應式chua電路混沌同步系統，提出混沌同步系統的自保持特性，解決了目前在混沌保密通信中，如何在同一通道中同時傳輸明文信息和混沌同步控制信號，為混沌同步在工程、通信領域的實際應用奠定了基礎。
  19. Based on the theory of dsss, the received signal can be despreaded and demodulated only when the phase of spread sequence in the receiver is equal to the phase of the received signal, or the useful signal would be overwhelmed by the noise

    根據直接序列擴頻原理，只有當接收端的本地擴頻序列與接收信號中擴頻序列相位一致時，即擴頻序列同步時，才能實現接收信號的解擴和解調，否則信號將淹沒在噪聲中。
  20. For implementing conveniently the detection, identification and extraction of useful signal from the collected signal, we make a brief analysis to the application of correlation function in digital signal processing based on its three basic principles

    摘要為了比較方便地對測量所得到的信號實現有用信號的檢測、識別和提取，根據相關函數的3條基本性質，對相關函數在數字信號處理當中的應用進行了一些簡要的探討。
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