頻率穩定 的英文怎麼說

中文拼音 [bīnlǜwěndìng]
頻率穩定 英文
frequency stabilization
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 穩 : 形容詞1 （穩定; 穩當） steady; stable; firm 2 （穩重） steady; staid; sedate 3 （穩妥） sure; rel...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 頻率 : frequency; rate
  • 穩定 : 1 （使穩定） stabilize; steady 2 （穩固安定） stable; steady 3 （物質的性能不易改變的作用） stabi...
  1. Study on the frequency stability problem of sal

    合成孔徑激光雷達頻率穩定性問題研究
  2. Eddy - current sensor conversion circuit consist amplification circuit, band - pass filter circuit, demodulation circuit, differentiation phase and data sampling circuit. these circuits are used to convert the test signal of eddy - current sensor to discrete signal tend to process. the microprocessor system that formed of dsp chip is used to data fitting of test system, data displaying and data communicating with personal computer, etc. the interference questions of hardware design and the measure of eliminating interference signal in the subject are introduced in the last of this chapter

    硬體電路的設計主要分三大部分來實現：激勵源電路部分，由分頻電路和頻率合成電路組成，產生頻率穩定的激勵信號以確保檢測任務的正常進行；傳感器變換電路部分，由放大電路、濾波電路、檢波電路、鑒相電路和數據採集電路組成，主要將電渦流傳感器檢測線圈檢測到的信號變換成只含有被測信息的離散信號，易於后續電路處理；由dsp晶元構成的微處理系統，主要完成檢測系統的數據擬合、顯示及與主機通信等功能。
  3. Our treatment shows in the raman effect case, mnls solitons, the same as nls solitons, keeps its energy, initial center and initial phase unchanged. however, the raman effect, not the same as nls solitons. reduces its amplitude, widens its width and under the same conditions, the self - frequency shift of mnls soltions is closer to the result of numerical simulation. in the raman effect together with frequency filters case, mnls solitons, the same as nls solitons, keeps initial center and initial phase unchanged and bandwidth - limited frequency filters can make the mean frequency of mnls soltion stand a steady value at the red side of the initial mean frequency, i. e. suppress the self - frequency shift of mnls soltions. and that, the other physical parameters of mnls soltion last stand a steady value. however under the same conditions, the steady value of the mean frequency of mnls soltions is closer to the initial mean frequency and the result of numerical simulation

    有所不同的是， raman效應雖然不改變孤子能量，但會引起孤子峰值的下降和寬度變寬，且在同一條件下， mnls孤子微擾理論得到的自頻移比nls孤子微擾理論得到的更接近直接數值計算結果。有限帶寬的頻率濾波也不引起mnls孤子初始中心、初始位相的改變，選取適當的頻率濾波器參數值能使孤子的平均頻率穩定在初始平均頻率的紅側一穩定值，抑制了自頻移，而且孤子的各物理量最後都穩定在一穩定值，這些與nls孤子微擾理論都是類似的。有所不同的是，寬度為飛秒量級下， mnls孤子平均頻率的穩定值更接近初始平均頻率，更接近數值計算結果。
  4. All - solid - state laser is an advantage lamp - house. it has many important applications and potential commercial value in many fields, such as industry, scientific research, military. so it ' s always the research focus of laser field. diode end - pumped solid - state laser has many merits. including high efficiency, long lifetime, high frequency stability, narrow line width, compact configuration, convenient for use et al, which made her a necessity in many high level quantum optics experiments. in this thesis, a series of experiment research was done with regard to blue laser, green laser and infrared laser

    激光二極體端面泵浦的固體激光器具有效率高、譜線窄、壽命長、結構簡單、使用方便等優點，特別是採用環行諧振腔內加光學單向器構成的單頻激光器，由於頻率穩定，使其成為許多高水平量子光學實驗的主要光源。本論文圍繞全固態單頻藍，綠，紅外激光器進行了一系列實驗研究工作。
  5. Since 1960 ", the methods for charactering time - frequency stability in time - domain have been in progress. the methods include allan variance, modified allan variance, time variance, hardamard variance, total variance, time interval error ( tie ) and maximum time interval error ( mtie ), of which tie and mt1e are usually used for telecommunication network

    自20世紀60年代以來，時間及頻率穩定度的表徵方法一直在不斷的發展，有阿侖方差、修正阿侖方差、時間方差、哈達瑪方差、總方差以及常用於電信網路的時間間隔誤差（ tie ）和最大時間間隔誤差（ mtie ） 。
  6. Based on the dds technology, the waveform generator first stored data in high speed ram, then used dac to synthesize waveform by the data. many waveforms could then be generated easily. besides, the wave generator could get high performance on frequence resolution and stability, phase continuum, relative bandwidth etc. the dds technology was widely used in frequence synthesis field

    基於dds技術的波形發生器以高速存儲器作為波形數據查找表、通過高速d / a轉換器對存儲器的波形進行合成，可以靈活產生多種波形，同時具有頻率解析度高、頻率穩定性好、頻率轉換快、相位連續性好以及相對帶寬較寬等特點。
  7. Article has introduced partition and the definition of oscillator frequency stability, and analyzed emphatically to cause the vibration factor with instability frequency, this paper elaborated the major measure and steady method that how to raise frequency stability

    摘要介紹了振蕩器頻率穩定度的定義與劃分，著重分析了導致振蕩頻率不穩定的因素，詳細地闡述了提高頻率穩定度的主要措施和穩定方法。
  8. Verification regulation of wide band frequency stability measurement set in time domain

    寬頻帶頻率穩定度時域測量裝置檢定規程
  9. In mis thesis, we report a laser with maximum output of 4. 16w, intensity fluctuation less than 0. 5 % ( rms ) in an hour, and frequency noise less than 340khz

    本文報道了單頻輸出4 . 16w ，長期功率波動范圍小於0 . 5 ，頻率穩定性優於340khz的激光器。
  10. With frequency stabilizer and high frequency magnetic leakage suppressor, this device prevents leakage of electro magnetic radiation to avoid jamming other electrical instruments such as television, radio etc

    置有高周波頻率穩定器和高周波漏磁壓制器，此裝置能免除電波的漏出以免干擾別的電子裝置，像電視機、收音機等。
  11. It uses lock cirtle frequency compose technology. frequency stable is high

    採用鎖相環頻率合成技術頻率穩定度高。
  12. The technology of frequency synthesis is important in latter - day communication system. it ’ s widely used in wireless communication and electron system. with the high - speed development of technologies, higher stability, higher purity, broader range and larger output number of frequency are required in the frequency source of frequency synthesizer which is the core of this technology

    頻率合成技術是近代通信系統的重要組成部分，在無線電通信與電子系統的各個領域中得到了廣泛的應用。隨著各種技術的飛速發展，人們對頻率合成器的頻率穩定度、頻譜純度、頻率范圍和輸出頻率的個數提出了越來越高的要求。
  13. The main works and results we have accomplished are as follows : 1 ) red - detuned locking of cooling / trapping laser to the cycling transition of cesium cooling has been accomplished by means of a double - passed acoustic - optical frequency shifting system and the technique of saturated absorption spectroscopy. the short - term residual frequency jitter is less than 350khz ; 2 ) automatic controlling system by computer programs has been established for laser cooling and trapping and cavity qed experiment. the laser and magnetic fields can be controlled by the acoustic - optical modulator and the electronic - controlled logic gate respectively

    具體如下： 1 ）採用了往返兩次通過的聲光頻移系統結合飽和吸收光譜技術的實驗方案，實現了冷卻俘獲激光頻率相對于銫原子冷卻循環躍遷的負失諧鎖定，短期頻率穩定度約在350khz以內，並可方便地調節其負失諧量而無須對后續光路再作調整； 2 ）建立了一套基於計算機程序控制的、銫原子激光冷卻與俘獲實驗所需的時序控制系統。
  14. The concept of viffoal laser frequency stabilizaion is put fowi. the frequency stabilizaion at the center of doppler curve has been realized aller signal detecting, phase sensitive detecting, integrating and high voltage amplifying circuits with fm spectroscopy a frequency stability of l0 -, has been obtained with a reproducibility of l0 - 9. hyperfine spectra of, ', i, near 532nm have been studied via modul8tion tfansfer spectroscopy

    利用fm光譜法將激光單次通過碘吸收室進行線性吸收，再經信號檢測、混頻、積分和高壓放大等伺服電路，實現了在多普勒曲線中心處的頻率穩定，頻率穩定度和復現性可達10 ~ （ - 9 ）量級。
  15. In this circuit, reference current sources are used to charge and discharge capacitors. this oscillator ’ s output is very ideal through control circuit under 5. 7v reference voltage, and oscillator ’ s frequency and duty - cycle could be adjusted if reference current source or capacitors in the circuit was adjusted. and the changes of temperature and voltage affect stabilize of the frequency little

    此電路利用系統內部基準源產生的電流信號來對電容進行充放電，然後經過控制電路作用后，產生的輸出振蕩波形的上升時間和下降時間非常小，更接近理想矩形波形;通過調節基準源電流信號或者電容值大小，可調節振蕩波形的頻率和占空比，同時溫度和電壓的變化對振蕩器輸出波形頻率穩定度的影響很小。
  16. In the design of the spll, srd takes the input of a crystal oscillator and generate very sharp and narrow pulses

    在振蕩器之後，本文加了一個緩沖放大器，它起到放大輸出功率和改善頻率穩定度的作用。
  17. Long - term frequency stability

    長期頻率穩定度
  18. Frequency source is widely used in today ' s electronic equipment and even refered as " a heart " of many electronic systems. the frequency synthesizer with a lot of channels and high frequency stability by means of theory of phase locking has almost been a necessary component in the modern electronic systems such as telecommunication, radar and electronic countermeasure. the phase - locked frequency synthesizer can be generally divided into two kinds : one is digital phase locked frequency synthesizer, the other is analog sampling phase locked frequency synthesizer. compared with the prior, the latter has many merits such as lower phase noise, samller volume, lighter weight and lower power consumption and has a wide foreground in the equipments of microwave band

    利用鎖相原理來獲得波道數目眾多、頻率穩定度很高的頻率合成器，幾乎已成為現代通信、雷達和電子對抗等電子系統不可缺少的組成部分。鎖相式頻率合成器一般分為數字鎖相頻率合成器和模擬取樣鎖相頻率合成器兩類。取樣鎖相頻率合成器與數字鎖相頻率合成器相比，具有相位噪聲低、體積小、重量輕和功耗低等優點，尤其在微波波段的電子設備中，具有廣闊的應用前景。
  19. The definition of stability and repeatability of the laser frequency and factors affecting the stability of laser frequency were analysed. the normal methods used to stabilise frequency and produce double - frequency were explained. after analysing the working conditions and related parameters of the laser device, it was concluded that the laser tube should be put inside an insulating cover and an electric discharge tube with a bigger diameter and length, smaller wall thickness and a higher thermal conductivity coefficient should be chosen

    分析了激光頻率的穩定性、復現性的定義及影響激光頻率穩定的因素；介紹了常見的穩頻及產生雙頻的方法；分析論證了激光器雙縱模熱穩頻的使用條件和有關參數的關系，得到結論是：應將激光管裝在保溫罩內；選用放電管直徑及長度大、壁厚小、材料導熱系數大的放電管。
  20. The experiment results show that : the frequency stabilization of the optimized doppler modulator has already reached rms error about 1 %, which could meet the need of reference signal of the lock - in amplifier

    實驗結果表明，經過優化后的多普勒調制器的輸出調制信號頻率的相對標準誤差達到了1 %左右，能夠滿足鎖相放大器對輸入參考信號頻率穩定度的要求。
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