flat spectrum 中文意思是什麼

flat spectrum 解釋
平譜
  • flat : n 1 〈英罕〉地板；（房屋的）一層。2 一套房間；〈pl 〉分宅公寓〈美國高級公寓叫 apartment house〉。...
  • spectrum : n. （pl. -tra ）1. 【物理學】譜，光譜；波譜；能譜，質譜。2. 【無線電】射頻頻譜；無線電（信號）頻譜。3. 【心理學】（眼睛的）余像；殘像。4. 〈轉義〉范圍，幅度；（連續的）系列。
  1. Due to the needs for the flat spectrum character, the leading sequence requires high self - correlation. the author selected a series of sequences whose highest peek to second highest peek ratio is big, from a series of " m " sequences. then, the optimized leading sequences were judged according to glf, the sequences which have lower glf would be more proper for the estimation

    首先，作者提出搜索的標準，根據前導序列要有平坦的譜特性，從而要有好的自相關性，從一種m序列中找出最大峰與次大峰比例較大的一些序列，然後根據增益損耗因子來判決最佳前導序列，增益損耗因子越小的序列越適于估計。
  2. But for the final energy structure of er3 +, property of edfa ' s gain has its inherent disadvantage : edfa ' s gain is different vs wavelength, in other words, its gain spectrum is not ideally flat, so the output signal will be different if the input signal have the same power

    但是由於edfa中工作物質鉺離子能級結構的影響， edfa對光信號的放大特性也有其固有的缺陷： edfa對不同波長的光信號的增益並不完全相同，即其增益譜不平坦，因此一組強度相同的光信號經過放大后的強度會有所不同而產生偏差。
  3. A flat and broad sc spectrum can be obtained by optimizing the chromatic dispersion design of the sc fiber

    通過對色散曲線的優化設計，可以獲得平坦展寬的超連續譜。
  4. The results show that the fiber with chromatic dispersion that is a convex function of wavelength in normal dispersion region is favorable for generating a flat sc spectrum

    發現在光纖的正常色散區，色散曲線與波長的成凸型函數關系的色散特徵，有利於平坦光纖超連續譜的產生。
  5. The equilibrium thermal radiation in a flat space - time or a curved space - time behaves like planck black spectrum represented with coordinate quantities. we regard the fact that the radiation from a thermal equilibrium system shows planck black spectrum as a basic physics law, from which it is demonstrated that the transitivity of clock rate synchronization is equivalent to the zeroth law of thermodynamics. the condition of clock rate synchronization is weaker than that constructing simultaneity surfaces. in the space - time satisfying the condition of clock rate synchronization, the zeroth law of thermodynamics is valid. on the other hand, in the space - time where the zeroth law is valid, one can define an identical clock rate

    平直或彎曲時空中的平衡熱輻射，表現出用坐標量表示的普朗克黑體譜.把熱平衡系統的輻射具有普朗克黑體譜作為一條基本的物理規律，以此為基礎，論證鐘速同步的傳遞性等價于熱力學第零定律.鐘速同步的條件比建立同時面的條件要弱.滿足這一條件的時空，熱力學第零定律在其中成立.第零定律成立的時空，一定可以定義統一的鐘速
  6. The method using the part imitate extract the continuous spectrum of the signal spectrum, than extract line - spectrum from the relatively flat line - spectrum by subtract it from the former spectrum

    該方法利用分段擬合方法擬合出信號功率譜的連續部分，從原始功率譜中減去連續譜得到拉平的線譜分佈，然後進行線譜特徵提取。
  7. Raman fiber amplifier （ rfa ） is a kind of optical amplifier that can amplify signal light directly through nonlinear interaction of high intensity pump and signal light in fiber. whereas the spectrum of raman gain coefficient of optical fiber is not flat, the gain of signal light with different wavelength induced by a single pump is rather different, when wavelength division multiplexing ( wdm ) signal light is amplified by a single pump, the gain spectrum of the wdm signal light is not flat. the flatness of the wdm signal light has important impact on the optical signal - to - noise ratio ( osnr )

    拉曼光纖放大器（ ramanfiberamplifier ，簡稱rfa ）利用高強度的泵浦光與信號光在光纖中的非線性相互作用實現信號光的直接放大，但是由於光纖的拉曼增益系數譜很不平坦，所以同一泵浦光源對不同波長信號光的增益就存在很大的差別，因此，用單泵浦光源來放大波分復用（ wavelengthdivisionmulti - plexing ，簡稱wdm ）信號光時，各信號光的增益值就有很大差異， wdm信號增益的平坦度對光信噪比（ opticalsignal - noiseratio ，簡稱osnr ）有重要影響。
  8. Flat - spectrum radio quasar

    平譜射電類星體
  9. However, multipath components can be resolvable due to the autocorrelation of the spread spectrum signal, thus the optimal receiver equals coherent rake reception, i. e. maximum ratio combining the independent components which endure flat fading or frequency non - selective fading. synchronization of pn code and separation of resolvable multipath components need to estimate the exact time delay among the multipath components

    但是利用擴頻信號的自相關特性，可分辨多徑可以被有效分離，最優接收機等效為對多個具有獨立平坦衰落通道（或頻率非選擇性通道）特性的多徑信號進行最大比合併，即相干rake接收。
  10. The results show that the dispersion slope of dispersion - shifted fiber is crucial to sc generation. a flat and ultra - broad - band sc spectrum is obtained by optimizing the fiber parameters and the peak power, pulse width of pump pulse

    通過對光纖色散斜率的優化設計並綜合考慮泵浦脈沖功率、脈沖寬度對sc譜譜寬和平坦度的影響，獲得了平坦、超寬的sc譜。
  11. The typical erbium - doped fiber gain spectrum is a combination of a high - intensity region and a flat part spectrum, and the power difference has limited the bandwidth of edsfs

    典型的摻鉺光纖增益譜線由一個譜峰和後面的譜肩組成，它們之間的功率差異造成了對光纖陀螺可應用的edsfs帶寬和平坦度的限制。
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