beat signal 中文意思是什麼
beat signal
解釋
差拍信號-
By using the processing method of sliding time window, the problem of the periodicity range ambiguity is solved. meanwhile, the problem of range ambiguity which is produced because the range of target is biger than the maximum range of radar is also solved by using this method. then, the pulse width parameter which is the most important in the parameters of fmicw is analyzed. the stricter restrict is given to ensure the range spectrum has only one beat frequency after signal processing. at last this thesis introduces the different signal processing methods of fmpcw and fmicw
同時利用該方法解決了fmpcw信號的由於目標距離超過雷達的最大單值測距范圍而引起的距離模糊問題。然後對fmicw波形參數中最為重要的脈沖寬度進行了分析，給出了更為嚴格的約束條件，保證了信號處理后距離譜峰值的唯一性。最後，分別介紹了fmpcw和fmicw信號的不同處理方式，並對兩者不同的時域濾波性能進行了比較，並對二者的差異進行了分析。 -
Based on the analysis of the beat frequency signal, the expression of the beat frequency phase is deduced. the expression indicates physics meanings of quantities to be detected and supplies theoretical bases for detection methods. by using two - dimensional fft, the range and velocity information of target is got out from the echo. according to the periodicity range ambiguity of symmetrical pulses in fmpcw, the processing method of sliding time window is used
通過對差頻信號進行的分析，得出了差頻相位的具體表達式，表現出了要檢測的各量的物理意義，對檢測的方法提供了理論依據。利用二維fft方法，可以有效地提取回波中目標的距離與速度信息。對于fmpcw信號由於均勻脈沖產生的周期性距離模糊的問題，採取時間波門的處理方法。 -
Mr cowen ' s model for running better meetings is hard to beat : put in place a system ( he suggests body sensors ) that enables participants to signal their boredom anonymously
考恩先生提出的更好地開會的模式無懈可擊：在座位上安裝一種裝置（他提議的是身體感應器） ，使參與者可以匿名地表達他們的厭煩之情。 -
In this thesis a high precision frequency ( range ) estimation technique based on the phase of the fft of the beat - note signal is presented. the phase of the fft of the beat - note signal changes with the range between the radar and the liquid surface
差拍信號的fft幅度最大處的相位隨距離變化，因此可以利用fft相位在一個頻率（距離）分辨單元范圍內估計差拍信號的頻率（距離）的位置，從而提高頻率（距離）估計精度。 -
Abstract : in this article, differences between two kinds of signal manipulation are given, concerning qualities are calculated, the mistakes on beat eqation are presented a nd the development history of the question are reviewed
文摘:本文分析了兩類信號處理過程的特點與差異，對合成信號的有關量做了計算，指出了節拍問題相關計算的欠妥之處，講述了該問題的發展史。 -
The idler light is then made to beat with the pump light, the latter is converted into additional amounts of idler and signal light.
無效光與抽運光成拍，抽運光又轉換成更大量的無效光和信號光。 -
Unbalanced vibration signal of double - shaft rotating system with little rotating - speed difference is a composite signal called " beat ", how to separate two rotors " unbalanced weight from " beat " is the key of balancing for this rotating system
微速差雙轉子系統的不平衡振動信號是個拍振，如何從復雜的拍振信號中，分離出內、外轉子各自的不平衡量，一直是該類轉子動平衡的難點。 -
On the basis of analyzing the output signal of a two wavelength beat - wave absolute distance interferometer, this paper proceeds from the realities of the aiming method of the beat - wave interferometer, conducts an analytical investigations on the dependence of the aiming accuracy of the beat - wave interferometer on laser dual - line output power equilibrium, propose two new concepts - a basic aim blind area and a blind area expansion, and establishes an analytical expression between the blind area expansion and the relative power difference of laser dual lines
本文從拍波干涉儀對準方法的實際出發，在分析雙譜線拍波干涉儀輸出信號的基礎上，研究了雙譜線功率不一致與拍波干涉儀對準精度的關系，提出了基本對準盲區和盲區擴大量的新概念，建立了描述盲區擴大量與雙譜線相對功率差之間關系的解析表達式。 -
A infrared system with which can detecte the pulse of human. because human body are semitransparent, and the transparence of it change along with the heart beat. the infrared sensor can detecte the change, we may tanslate the signal from sensor into a digital form by a cmos ic. when the signal change into a digital form, another ic can get the rhythm of the heart from the analog ic. this article designed the anologe ic which got the sensor signal into digital form
本論文完成了一個基於反射型紅外線傳感器的cmos模擬專用集成電路的設計，它構成的紅外系統具有探測心跳頻率的功能。設計根據人體組織的半透明度會隨心臟跳動而變化的特點，由傳感器探測到這一變化，通過專用集成電路將信號放大並利用，獲得心跳頻率。本模擬晶元結合數字電路可計算即時心率或統計心跳總數。 -
We reconstructed the phase space and calculated the nonlinear parameters such as correlation dimension, the largest lyapunov exponent, approximate entropy, and l - z complexity of the data. it can be conclud from the results that the reconstruction of heart beat rate signal is strange, its correlation dimension is between 5 to 7 and have the character of fractal dimension, its largest lyapunov exponent is larger than zero, its approximate entropy and l - z complexity are obviously differ from noise. we can draw a conclusion from all above : the heart beat rate signal is n ' t simple noise, it is high dimensional chaos obeys certain dynamical law
我們還對信號進行了相空間重構，計算了信號的關聯維數、最大lyapunov指數、近似熵和復雜度這幾個非線性特徵量，我們發現，心率信號的吸引子是奇怪吸引子，關聯維數介於5到7之間，具有分維的特徵，其最大lyapunov指數大於0 ，其近似熵值和復雜度值明顯區別于噪聲，這說明心率信號不是隨機噪聲，它是服從確定性動力學規律的高維混沌信號。 -
From the results of linear analysis, it can be found that most of the people ' s heart beat rate centralize at 70 - 80 times / min. it ' s power spectrum is a continuous spectrum with a pinnacle, this shows that the heart beat rate signal obeys certain dynamical law
文中對15例心率信號進行了統計分析和簡單的時頻域分析，發現大部分人的平均心率集中在70 - 80次分，其功率若是一有尖峰的連續譜，說明心率信號不是簡單的噪聲，它服從一定的動力學規律。 -
The main research work and results can be summarized as follows : 1. analysis of echo signal of lfmcw radar, including beat signal of single - target and multi - target. 2
本文的主要工作包括:對lfmcw雷達回波信號（單目標差拍信號和多目標差拍信號）進行了分析;對lfmcw雷達模糊函數進行了分析。 -
The method first realizes detection and classification of moving targets with different ambiguous velocities via mtd in order to simplify the spectrum of beat signal, and then eliminates moving targets " range - velocity coupling with frequency domain pairing
該方法首先通過mtd實現對不同模糊速度目標的檢測和分類，簡化差拍信號頻譜環境，然後利用頻域配對法實現動目標的距離速度去耦。 -
In theoretical analysis, the effect on receiving signal by radial beat of galvanometer is given qualitatively
理論分析中定性的給出了振鏡轉軸的徑向跳動對信號接收的影響。
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