高頻率光譜 的英文怎麼說

中文拼音 [gāobīnlǜguāngpǔ]
高頻率光譜 英文
high frequency spectrum
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 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
  • 光 : Ⅰ名詞1 （照耀在物體上、使人能看見物體的一種物質） light; ray 2 （景物） scenery 3 （光彩; 榮譽） ...
  • 譜 : Ⅰ名詞[書面語]1 （按類別或系統編成的書或冊子等） table; chart; register 2 （指導練習的格式或圖形）...
  • 頻率 : frequency; rate
  1. Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground

    針對存在的缺點，本文提出了一種應用於激光多普勒測速的高精度信號處理技術，即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜，搜索其譜峰值頻率，接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析，再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析，從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來，充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率，通過goertzel演算法獲得分析頻帶的高解析度頻譜，然後通過能量重心校正演算法對細化后的頻譜進行高精度校正，這樣不僅保證了演算法的高效性，而且大大提高了分析的精度。
  2. Because blue and red are respectively near the frequency of high and low ends of the visible spectrum

    由於藍及紅為可見光譜中頻率最高及最低的兩端，所以在天文學中，我們稱恆星光的
  3. In wavelength conversion based on four - wave mixing ( fwm ) in soa, balance efficiency can be obtained in larger range when increasing saturation power of the optical amplifier and decreasing the saturation power of spectral hole burning and carrier heating

    而在基於soa的四波混頻（ fwm ）波長轉換中，在提高光放大器飽和功率的同時減小光譜燒孔（ shb ）和載流子加熱（ ch ）飽和功率可有效提高較大頻率間隔處的轉換效率，並保持其在較大頻率失諧范圍內的效率均衡。
  4. Based on the propagation law of the cross - spectral density function in the space - frequency domain, the properties of polychromatic vector gsm beams through a paraxial optical abcd system are studied. the analytical propagation expressions for the cross - spectral density matrix of vector gsm beams passing through a paraxial optical abcd system are derived, which permits us to study the propagation properties of vector gsm beams, including the propagation - induced polarization changes, effect of the spectrum bandwidth and irradiance distributions in a unique way. there are some applications of the theoretical results

    基於空間一頻率域中交叉譜密度函數的傳輸理論，研究了多色矢量gsm光束通過abcd光學系統傳輸時偏振特性的變化規律，首次推出了矢量高斯一謝爾模刑fgsm ）光束通過近軸abcd光學系統交叉譜密度矩陣的傳輸公式，並對矢量gsm光束傳輸中偏振的變化、譜寬的影響和強度的分佈等進行了統一研究。
  5. Thirdly, a ladar transmitter with high repetition rate which uses pulsed laser diode is manufactured. the power characteristics, spectrum characteristics and temperature characteristics of the laser diode are discussed

    研製了一種重復頻率高的脈沖半導體激光器激光雷達發射機，討論了半導體激光器的功率特性、光譜特性和溫度特性。
  6. A cyclic radial shearing interferometer was used to diagnose the wavefront distortion of a laser system and an lcslm ( liquid crysnd spatial ligh modulator ) was used to control it. some results have been summarized as follows : l. according to the theory of scalar quanity diffeaction and the model of the random gaussian phase screen of low frequency wavefront, the effect of the low frequency wavefront with different rms gradient on the focal spot of a laser beam was studied

    本論文在激光光束波前畸變檢測和控制上進行了新的探索，主要就空間相位調制環路徑向剪切干涉儀以及它對波前畸變的檢測和液晶空間光調制器及其對中頻段波前畸變的控制進行了研究，其研究的內容和取得的成果如下：一、根據標量衍射理論，結合低頻波前畸變的高斯隨機位相分佈模型，研究了不同均方根梯度低頻畸變波前對激光光束焦斑聚焦性的影響，並採用描述中頻段波前畸變的功率譜密度概念，模擬計算了它對激光焦斑旁瓣的貢獻。
  7. 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。
  8. 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。
  9. Simulations on light intensity are validated by experiments and influence of mechanical dither on gyro frequency stabilization is studied for the first time. then it is point out that the key to improve the precision of frequency stabilization is to choose appropriate modulation frequency based on the frequency spectrum of sharp pulses, which is introduced by mechanical dither. thereafter, experiments of frequency stabilization under different modulation frequencies are made

    通過實驗驗證了光強模擬結果，首次分析了機械抖動對穩頻的影響，指出提高機抖陀螺小抖動穩頻精度的關鍵在於：根據機械抖動引入的交流光強尖峰脈沖頻譜分佈選擇合適的調制頻率，並給出了不同調制頻率的穩頻實驗結果。
  10. Laser diode end pumped solid - state laser has many advantages, including high efficiency, high frequency stability, narrow fine width, long lifetime, compact configuration, convenient for use et al, which made her a necessity in many high level quantum optics experiments

    激光二極體端面泵浦的固體激光器具有效率高，頻率穩定，譜線窄，壽命長，結構簡單，使用方便等優點，使其成為許多高水平的量子光學實驗的主要光源。
  11. Secondly, the nonlinear joint transform correlation recognition and the photorefractive correlation recognition are investigated by computer simulation and experiment, and the research results are given as following : ( 1 ) the correlation discrimination of the jtc can be greatly improved by binarizing the joint transform power spectrum nonlinearly. it is found in our experiment that the threshold magnitude has great influence on the correlation output of a binary jtc

    其次，通過理論分析、計算機模擬和實驗研究的方法，對非線性聯合變換相關識別和光折變光學相關識別進行了研究，並給出了研究結果： （ 1 ）對聯合變換功率譜進行二值化處理可以使得功率譜高頻成份得到較大提高，從而大大提高聯合變換相關器的識別能力。
  12. When the pulse width of input gaussian wave packet was reduced and the length of forbidden region retained, the result displayed the output signal distorted seriously and its spectrum changed very hard. a frequency above the cut - off frequency became the main frequency and the group velocity was below than c

    在保持截止區長度不變，而減小輸入高斯波包的脈沖寬度時，模擬顯示輸出波形嚴重失真，而且，頻譜也發生很大的變化，主頻已變為一高於截止頻率的頻率，群速度小於光速c 。
  13. Similarly, in the spectrum of a star moving towards us, the characteristics lines would show a “ blue shift ”, i. e., they would be displaced towards the blue end of the spectrum, corresponding to shorter wavelengths and higher frequencies

    同樣，在向我們靠近的恆星的光譜上，特徵譜線會顯示「藍移」 ，即譜線移向藍端，就是說波長短而頻率高。
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