頻率圖解 的英文怎麼說
中文拼音 [bīnlǜtújiě]
頻率圖解
英文
frequency diagram-
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。Digital watermarking algorithm based on wavelet transform, making use of relative frequency equability feature of low - frequency that comes from image ' s mra decomposing and according to size between insert point value and its region mean value, is that two - value watermarking is hid in insert point
基於小波變換的數字水印演算法充分利用了圖像經過多分辨分解后低頻圖像的頻率相對平穩特性，並依據嵌入點值與其區域均值的大小，將二維二值水印信息隱藏到嵌入點。Psittacula agapornis ), oscine passenon ( emberiza rutila ) and the vocalizations of sub - oscine passerine ( melopsittacus undulates, psittacula agapornis ) after sectioning nxiits were recorded by sharp gf - 6060 recorder. cooledit2000, an acoustic analyzing software, was used to produce the original wave and it ' s expanded time windows, sonograms, spectrums and power static histograms. to distinguish the acoustic differences of their natural vocal and to find the changes of sub - oscine passerine ' s song after sectioning nxiits, the above results is acoustically analyzed and compared, expecting to provide some advantage to further explaining the mechanism of vocal production
本實驗以非鳴禽（家鴿、家雞） ，亞鳴禽（虎皮鸚鵡、牡丹鸚鵡）以及鳴禽（栗? ）為實驗材料，記錄其正常叫聲以及亞鳴禽斷nxiits后的叫聲，用cooledit2000聲音處理軟體制出原始信號及其展開圖，聲圖，頻率譜圖以及能量統計分布圖，並對所得結果進行聲學比較分析，以期得到鳴禽、亞鳴禽及非鳴禽叫聲在聲學特性上的差異，以及亞鳴禽在斷神經后叫聲的聲學變化，旨在為進一步解釋其發聲機制提供幫助。Furthermore, the network technique only support the voice service cannot meet the communication requirements of people. people hope to obtain multimedia service such as packet data, video and picture phone etc besides voice service. all these need operators and researchers to look after the mobile communication scheme which optimizes spectrum efficiency and expands system capacity to accommodate more users in major metropolitan markets
此外，僅支持語音業務的網路技術已不能滿足人們對信息交流的需求，人們希望能隨時隨地獲取除語音之外的數據、視頻和圖像等多媒體業務，這些因素都促使運營商和研究者尋求頻譜利用率更高、通信容量更大的移動通信解決方案。( 5 ) method of bandwidth compression of holographic grating based on discrete spectrum and realization of a 1 / 8 bandwidth compression of holographic grating ( 6 ) holographic stereogram display that can be implemented using cgh and imaging process through capturing sequence parallax images based on result of computed basis fringe
採用空間頻率域的子采樣，計算了一個8倍的條紋函數壓縮編碼結果，並給出了簡單易行的解碼方式。 6 、利用獲得的基本條紋函數合成了一個基於序列視差圖像的立體圖顯示，實現了三維數據未知的物體的三維全息顯示。In attempt to directly compare the sound response characters of the same bf neurons or different bf neurons and their interactive relation, the double recording microelectrodes were penetrated into two different neurons in iso - frequnency laminas or hetero - frequency laminas. taking advantage of frequency tonotopical arrangement in 1c of bats, it was explored how the neurons integrated different parallel processes of the same sound information. in the case of which, we hoped to explore the relation between the sound response characters of the central auditory neurons and neural modulation in background noise for the further understanding of the mechanism in the central auditory neurons extracting sound signals
本研究以大棕蝠（ bigbrownbat ， eptesicusfuscus ）為模型，利用ic聲調組構排列成同頻層這一結構特點，突破單電極記錄和檢測神經元的方法，同時推進兩單電極至一個同頻層或兩個同頻層的兩個不同神經元，試圖從細胞水平直接比較兩個具有相同和不同最佳頻率的神經元聲信號的加工處理特徵、以及它們之間的相互關系，以期窺探它們在對同一聲信號處理過程中的整合奧秘，並以此為基礎分析和探討背景噪聲條件下中樞神經元聲反應特徵與神經調制的關系，以期進一步了解中樞聽神經元聲信號提取的機制。When we have come into high enough resonance with the frequency patterns of the divine names within our very own beingness, the pathway is then opened for the angelic beings holding these patterns, to project their image directly into your holistic body / mind / soul template, thereby bringing you the last distance across the upper threshold into your divine heritage : full expression of the adam kadmon template
當我們擁有了浸淫非常自我化屬性的神性名稱頻率模式進入到足夠高的共振時候，於是持有這些特質的天使生命這樣的道路就開啟了，就可以投射天使的圖像進入你全部的身體/思想/靈魂模板內去，因此把你最終的越過上面的道路帶進到神性傳承里來：這就是亞當卡德蒙模板的完整解釋。The acs algorithm inspired by the ants foraging principle is used to solve the problem of the homogenous frequency enlargement of design flood in this paper, the sketch of ants foraging about design flood computation is constructed and retailed process is provided
摘要採用蟻群acs改進優化演算法求解了典型洪水同頻率放大問題，構造了用於設計洪水過程求解的螞蟻覓食概化結構圖，並給出了具體求解思路和流程。Firstly, the ridge resolution under multi - component situation is analyzed ; a conclusion shows that the resolution is close related with the ratio between component instantaneous frequencies ( if ). generally if this ratio is greater than 2, the ridges could be well separated ; when this ratio is less than 2, the interaction between ridges will form a complex ridge image so that it being impossible to locate single ridge
首先針對多個信號分量的情況，定量分析了脊的解析度，並得出結論：脊的解析度與信號分量瞬時頻率的比值密切相關，一般在比值大於2的情況下，兩條脊能夠很好地區分；在比值小於2的情況下，脊之間互相干擾，形成復雜的脊分布圖像，無法提取單條的脊。2 ) radar incidence angle and surface roughness correction : to make radar incidence correction and eliminate the surface roughness effects, a wide range of surface parameters ( soil moisture, surface rms height, correlation length, incidence angle ) was input to the ibm model to simulate the effect of surface roughness and radar incidence angle on the sensitivity of soil moisture to the radar backscattering coefficient. a simple model was established to simulate the effects of incidence angle and surface roughness. 3 ) establishment of soil moisture change inversion model : according to a modified ibm model simulation results, the bare surface backscattering coefficients can be expressed as a funtion of the dielectric component for a given surface roughness when the surface slope greater than 2. 0, which is valid for most nature surface : in above equation, r0 is the surface reflectivity at normal incidence
本研究中，首先利用基於微波輻射傳輸方程的微波植被模型和積分方程（ iem ）模型模擬了各種地表土壤水分含量情況下，植被覆蓋、地表粗糙度（包括地表均方根高度和相關長度） 、雷達入射角對c波段（頻率4 . 7ghz ）水平極化（ hh ）雷達後向散射系數的影響，在此基礎上，建立模型消除了植被覆蓋、地表粗糙度、及雷達入射角對雷達後向散射的影響，利用多時相50m解析度radarsatscansar雷達後向散射系數圖像反演得到了地表土壤水分變化模式信息。Abstract : a software method of frequency - modulated signal demodulating based on wavelet packet is proposed in this paper. a variety of frequency - modulated signals are analyzed in time - frequency domain and the spectrograms are presented. this method can detect instantaneous frequency effectively and get frequency - modulated information, can be widely applied to dynamic testing and software radio
文摘:提出了基於小波包的調頻波解調方法，通過對各種調頻信號進行時頻分析，給出了信號的時間?頻率譜圖，能有效地檢測到瞬時頻率和獲取調頻信息，該方法可廣泛應用於動態測試和軟體無線電等領域。2. 768 * 576 pixels and 24 bit real time dynamic and static pictures can be captured by a special medical video card. the number and quality of the pictures captured can be controlled by the frame frequency, size of the documents enacted. owing to the image real time compress technology, real time record can be long time, documents transcribed can be re - screened randomly, operation database can be created automatically, normative operation reports can be printed freely
2 、通過一塊專有的圖像採集卡可以捕獲768 * 576象素解析度的真彩實時動態和靜態圖像;可通過設定捕捉頻率、幀數、文件大小來控制所捕獲圖像的數量和質量;由於採用運動圖像實時壓縮技術，可以長時間實時錄像，同時能任意回放錄制的文件;自動生成手術數據庫，能隨意列印規范的手術報告單。The results show their efficiency and validity. chapter 2 first reviews the basic theory concerned with image wavelet transformation, which includes the wavelet multi - resolution analysis theory, the discrete wavelet transformation and the two dimension discrete wavelet transformation ( mallat algorithm ), and analyzes the space and frequency distributing characteristics of image wavelet coefficients
第二章首先詳細介紹了圖像小波分析的基本理論，其中包括從小波多解析度分析理論開始到離散小波變換再到圖像的二維離散小波變換即malat演算法，並著重分析了圖像小波變換系數的空間和頻率分佈特點。Gabor transformation : in frequency field, gabor transform has sound direction selectivity. selecting a certain direction and picking - up corresponding feature value by this means was another choice for image research
基於頻率域分解的gabor變換， gabor變換有著比較好的方向選擇性，利用這一點特性，為圖像分析提供了另一個思路。Finally, the production, which is designed and debugged all by myself, c band fine resolution low phase noise frequency synthesizer was introduced by module, including respective schedule, frequency distribution and phase noise experiment results. then whole circuit phase noise result, picture of spectrum with spur were presented, by which above theory was proved, analysis of the result was given, and the existing problem as well as methods to resolve it were motioned
論文最後對自己設計調試的樣機c波段小步進低相噪頻率合成器進行了分模塊介紹，包括各部分的原理框圖、頻率分配和相噪測試結果，然後給出了整個樣機的相噪、雜散頻譜測試結果，對上面提到的理論進行驗證，並對結果進行了討論分析，提出了樣機現存的一些問題和幾點解決措施。( 2 ) a new texture classification algorithm based - on the lifting wavelet transform in suggested utilizing wavelets " perfect performance in spatial - frequency localization and the lifting wavelets " in - place operations. it computes the entropy values of the sub - frequency images disposed by the two - layers " lifting wavelet transform, and has merits of low feature dimensions, low computational cost and good capability
利用小波分析的時頻局域化特性以及提升小波的本位運算等優點，對紋理圖象進行提升小波分解，再對得到的高頻子圖繼續做第二層小波分解，然後以各頻率子圖的圖象熵作為圖象的紋理特徵進行紋理分類。Imaging interferometric lithography ( iil ) transfers different components of spatial frequencies through the same limited aperture at different time to enhance the resolution power of lithography with increasing less cost of system
摘要掩模投影成像干涉光刻技術以在很小或幾乎不增加光刻系統成本的基礎上來提高光刻解析度為目的，充分利用系統的有限孔徑，將掩模圖形不同的空間頻率分別進行傳遞，最終以高解析度對掩模成像。Due to the future of wavelet transform is accordant with the human visual model ( hvs ), a watermark can be embedded into an image by using wavelet transform, and its covered effect is apparently superior to the one inset by using other way
這樣就克服了小波時間解析度高時，頻率解析度低的缺陷。由於小波變換與人類視覺模型的特點相符合，故用小波變換在圖象中嵌入水印，其隱蔽性較其他方法具有明顯優越性The use of the batten interpolation for modal parameter in the curvature modal and flexibility difference curvature method can solve the contradiction between decreasing measure points and the guarantee of identification precision ; the identification program has also been developed in matlab : as long as the former 3 step vibration shape and frequency are input, the value and the graphic representation of damage identification will be obtained by flexibility difference curvature method
本文應用曲率模態法、柔度差值曲率法當中，對模態參數用樣條插值，較好地解決了減少測點與保證識別精度的矛盾；在matlab軟體中開發了識別程序：只需輸入前三階振型和頻率，即可由柔度差值曲率法給出損傷識別的圖示與數值結果。Wavelet transform is a time and frequency local transformation and it can withdraw the information from the signal. through the calculate function making the muti - scale analysis it resolves many difficult problems which fourier transformation ca n ' t resolve. in recent years the researches and the applications of wavelet transform on the image compression are flourish, but because wavelet transform is very complicated and its apply has certain localizations
小波變換是一個時間和頻率的局域變換，因而能有效的從信號中提取信息，通過伸縮和平移等運算功能對函數或信號進行多尺度細化分析，解決了fourier變換不能解決的許多困難問題。近年來小波變換在圖像壓縮的研究和應用都十分活躍，但是由於小波的理論很復雜，因此應用起來就有一定的局限性。分享友人