普紹勒 的英文怎麼說
中文拼音 [pǔshàolè]
普紹勒
英文
poucholle-
Compared with traditional contact flow measurement methods, presents the non - contact flow measurement methods, and emphases the application of laser doppler anemometry ( lda ) and particle image velocimetry ( piv ) to flow field measurement
摘要與傳統接觸式流量測試方法相比較，介紹了非接觸式流量測試方法，重點介紹了激光多普勒技術（ lda ）和粒子圖像測試技術（ piv ）在流場測試中運用的原理。A interception probability reduction theory by means of comparing the rppm with constant pri pulse sequence is also analysised in this paper, further more the strong properties of eccm of the rppm is discussed and analysised
此外，本文還介紹了隨機脈位調制信號比較于等重復周期（ pri ）脈沖信號來降低信號被截獲概率的原理，討論並分析了隨機脈位調制脈沖多普勒雷達較強的抗干擾能力。The simulation results further testify the correctness of the model and confirm the feasibility of the system. this paper also includes a velocity apparatus mainly based on doppler velocimeter. in this part the attention has been paid to the comprehensive effect of all kinds of factors that affects the precision of the doppler velocimeter, then a modification method for the original data for velocity computation has been given, as well as detailed formula for modification
本論文中還介紹了一套以多普勒測速儀為核心的測速系統，重點對影響多普勒測速精度的各種因素進行了綜合分析，提出了對測速原始數據進行修正的方法，給出了具體的修正公式，並利用這些公式進行了測速數據修正的計算機模擬，從而驗證了修正的有效性。Three imaging methods are introduced : range - doppler imaging, projection tomography imaging, polar - doppler imaging. several interpolation methods are introduced, and their simulation results are compared, and cubic spline interpolation is proved to be the best
介紹了最基本的三種成像方法：直角坐標距離-多普勒成像、投影層析成像和極坐標距離-多普勒成像。This article analyses the signal characteristics of several typical cw radars, and presents the principle and application of doppler radar. as one focal point, this article researches the generation and math characteristics of pseudorandom code modulated signal, analyses the spectrum of pseudorandom code phase modulation radar signal, and presents this kind of signal ' s application in distance and speed measurement. this article also researches the application of mono - pulse amplitude comparison radar in angle measurement finally, this article elaborates the working process of crs in uast
本文分析了幾種典型的連續波雷達信號的特性，介紹了多普勒雷達的原理和應用；研究了偽隨機編碼信號的產生和數學特徵，著重分析了偽碼調相連續波雷達信號的頻譜，及其在雷達測距、測速方面的應用；研究了單脈沖幅度比較體制在雷達測角中的應用；最後，闡述了超近反導系統中復合體制雷達的工作過程。This paper introduces several methods retrieving wind direction from hf radar echo doppler spectrum and analyses the feature of those methods
本論文介紹了現有的從高頻雷達回波多普勒譜中提取風向的幾種方法，分析了這幾種方法的不足之處。In this paper, the main problem is to detect the position and velocity of moving target by fractional fourier transform which could be concluded by three parts, the echo model establishment of moving target, the realization of fractional fourier transform and parameters estimation of moving target, detailed contents are as follows. firstly, the paper analyses the echo model of sar static target and introduces a kind of sar imaging algorithm, range - doppler ( r - d ) algorithm
本文的主要內容包括三個部分，即動目標回波模型建立、分數階傅立葉變換的實現和動目標參數估計，具體來說，其內容如下:首先，本文研究分析了合成孔徑雷達靜止點目標的回波模型並介紹了一種基本的合成孔徑雷達成像演算法? ?距離-多普勒（ r - d ）演算法。With the development of the self - oscillating mixer ( som ) theory, the application of som has been studied thoroughly and shows potentials in many fields. this paper introduces the development of som technology in the pass few years at first. then it shows some popular nonlinear techniques used in analyzing the nonlinear circuits. the technology of som can be used in the doppler radar for velocity measurement and in frequency modulated continuous wave ( fmcw ) for distance measurement
本文通過對自振混頻技術基本理論的研究，介紹了對非線性電路進行分析的理論方法以及在自振混頻器技術分析中的應用，然後對自振混頻技術在多普勒測速雷達和調頻連續波（ fmcw ）雷達上的應用進行了研究。1 in the research of design of radar waveform, one kind of hybrid radar waveform obtained by combining the chirp waveform with the non - periodic pseudorandom sequences is discussed. through the theoretical analysis and computer simulation, several main characteristics of this kinds of hybrid waveforms are discussed, such as the ambiguity function, ambiguity graph, the spectrum, the weighting methods, the response of the processing filter and the low probability of interception. those are showing the effectiveness of the new hybrid waveforms on the performance of high resolution and low probability of interception
作者在以下幾個方面的研究工作中取得了進展及創新： 1 、在雷達波形設計中，介紹了一類新的線性調頻信號與非周期隨機編碼信號相結合的組合波形的組合形式，通過理論分析和大量的計算機模擬研究了這類組合波形的模糊函數（圖） 、頻譜特性、多普勒頻移特性、加權輸出特性、低截獲等方面的特點，證明了新型的組合波形在高分辨、低截獲等方面的有效性。Rtce is based on forecasting the inherent vulnerabilities to propagation of hf time - varying channel, including multipath delay, doppler spread, selective fading, interference, so this paper also introduces characteristics of hf channel in the beginning. familiar rtce systems all adopt envelope method that bello brought forward
實時選頻技術是基於對短波電離層時變通道固有的不利於電波傳播的各種因素，包括通道的多徑展寬、多普勒展寬、選擇性衰落、噪聲干擾等的預測的基礎上實現的，所以在開篇對短波通道的特點進行了詳細的介紹。This paper focus on these problems and discusses the possibility of using pseudo - random code phase modulated ( prcpm ) technology in measuring high speed target. at first the basic principle of the m series is given, then a doppler pretreatment method is given
首先介紹了m序列編碼基本理論，然後給出了m序列調相雷達多普勒預處理的方法，該方法充分利用了m序列的移位相乘后仍為m序列的特性，並且將該方法擴展到一般的二相碼序列。In the first part of paper, we introduce the appliance of doppler weather radar in meteorological work in the near future, and simply enumerate all kinds of adjoint methods to retrieve data of radar. in the second part of paper, we choice some methods that are usually used domestically and overseas, compare excellence and flaw of the methods by using data of simulate wind field, analyze synthetically the precision of simulate result, the length of retrieval time and the structure of data distributing, lastly decide to regard ameliorated quasi - 4d adjoint method as retrieval technology in the paper. in the third part of paper, we retrieve the data of single doppler weather radar in hefei, anhui province, then calculate 3d wind field, streamline field, divergence, vorticity, helicity, moisture flux, divergence of moisture flux and potential vorticity from the result of retrieval
文中第一部分對近年來多普勒天氣雷達在氣象工作中的應用作了介紹，同時簡單的羅列了反演雷達資料的各種變分方法；接下來在第二部分選取了幾種國內外常用的反演方法，利用模擬的風場資料比較各種方法的優缺點，從模擬結果的精度、反演時間的長短、資料的分佈結構上綜合分析，最後決定將已做改進的準四維變分分析方法作為本文的反演工具；第三部分就是反演安徽合肥多普勒天氣雷達資料，然後由反演得出的風場計算了各個時間各個層次的三維風速、流場、散度、渦度、螺旋度、水汽通量、水汽通量散度和位渦。Firstly, according to the characteristic that the doppler frequency shift signal can be approximated as a single sinusoid signal, the extended sinusoid signal retrieval ( pisarenko and esprit ) methods are presented and signal state and measurement formulations are developed, so the kalman filter recursive method is got. the brief introduction of low velocity moving target doppler frequency shift signal wigner - ville transformation and wavelet transformation expression are presented in this paper. secondly, because the clutter is gaussian distribution, cumement and high - order spectrum based methods are presented and the simulation results prove their good performance to suppress gaussian clutter in low velocity moving target doppler frequency shift signal processing
一個方面是根據低速目標的多普勒信號可簡化為單一正弦波形式這一特點，得到了擴展的高斯色噪聲背景下的諧波恢復演算法，即高斯色噪聲中的pisarenko諧波恢復法和旋轉因子不變法（ esprit ） ；並推導了信號的狀態方程和觀測方程，進而得到基於卡爾曼濾波的遞推演算法對信號進行提取；本文還簡單的介紹了低速運動目標的多普勒頻移信號的wigner - ville變換與小波變換；另一個方面是針對雜波服從高斯分佈這一特點，提出了對接收信號求累積量和高階譜來對高斯雜波進行抑制。At first, this article introduces the digital imaging principle of the sar image, deduces the mathematic expression of the range - doppler model. on the base of analysis the r - d model function in image location, we ascertained the direct location based of the sar assistant data and verified the algorithm
本文首先介紹了sar數字成像原理，詳細推導了距離?多普勒（ r - d ）模型的數學表達式，在分析了r - d模型在圖像定位中作用的基礎上，系統給出了基於sar輔助數據直接定位的原理與方法，並對演算法進行了驗證。Space - borne radar parameters are used in simulation. base on the doppler frequency of rebound jamming signal, along - track interferometric detection scheme, which is proposed in chapter 4, is employed to detect point target rebound jamming in simulation, and the results validate the feasibility of this kind detection scheme. at last, a detailed comparison between rebound jamming and false target jamming is made
第五章介紹了彈射式干擾原理，對干擾信號特徵及干擾效果作了具體的分析，並利用機載sar參數作了干擾模擬實驗;根據彈射式干擾信號多普勒頻率的特點，利用沿航跡雙天線干涉對消技術對彈射式點目標干擾進行檢測，分析了模擬結果;最後還將彈射式干擾與虛假圖像干擾進行了比較。For power control of listening users, forward power control method are introduced based on full, multichannel, filtered report, and collision method etc. the full report method has redundancy report information, and its real - time performance is bad, multichannel report is introduced to improve the real - time performance, and filtered report is introduced to eliminate the redundancy information, finally the collision method introduced can not only get higher real - time performance but also diminish the redundancy information ; 2. in order to meet the requirements of making the dynamic simulation of trunking group system, the ms ’ s random move equation is brought forward, the simulation of ms ’ s distribution is done and the integrated channel model are presented ; 3. the smart predicative model of power control is introduced to overcome the delay and track the change of the complicated network, with this model, the power control ‘ s performance is greatly improved
全匯報方法存在冗餘的匯報信息，而且實時性較差，為了改善實時性提出了多通道的匯報方式，為了改善冗餘匯報而提出了篩選法，最後介紹的碰撞法在減少冗餘信息的同時又提高了實時性;二、為了集群功率控制動態模擬的需要，提出了移動臺的隨機運動方程，進行了有關移動臺的分佈模擬，建立了綜合的通道模型;三、希望克服延時和跟蹤復雜網路環境變化，提出了功率控制的智能預測模型，通過智能預測模型可以改善功率控制的性能，著重介紹了採用神經網路的方法實現智能預測的通用模型，從而跟蹤復雜多變的無線環境，諸如慢衰落及快衰落（包括多徑衰落、多普勒效應所引起的衰落）等網路特徵，達到預測功率需求;四、採用二級正交碼和智能天線（空分多址）的方法進行組內用戶的識別，改進功率控制效果;五、話權用戶的前向和反向功率控制方法;六、對引入gota的cdma系統提出了復合容量表示方法，並作容量分析，探討有關gota系統的qos問題。To begin with, it introduces brand definition of philip - ketler who is a famous marketing expert from america
主要介紹了美國著名營銷家菲利普科特勒對品牌所作的定義。Once one of the subsystems breaks down, all the other subsystems are affected. in this thesis, on the basis of federated kalman filtering theory and aiming at a certain type of airplane equipped with many navigation equipments such as sins, gps, etc., the integrated navigation system with the fault tolerance property is designed
針對上述問題，本論文介紹了容錯組合導航系統的聯邦濾波理論，研究了飛機具有速率偏頻激光捷聯慣導、 gps 、多普勒雷達等非相似導航系統配備條件下，容錯組合導航系統的設計方案及性能。Abstract : in this paper, the fundamentals and method of longitudinal displace mentmeasarement utilizing laser doppler effect are introduced. the factors influencing the affecting accuracy are expounded. moreover, the theory analysis and experiment - based methods are offered to improve the accuracy. this study can be applied in analyzing the surface profile and distortion, which is very important in theory and practice for the fields of aviation, mechanical and architecture industries
文摘:介紹了激光多普勒縱向位移測量的基本原理和方法，闡述了影響測量精度的要素，並在理論分析和實驗的基礎上，提出了改進措施.該項研究可應用於分析物體表面輪廓和變形狀況，對航空、機械、建築等工業有重要的理論意義和實用價值In this paper, the fundamentals and method of longitudinal displace mentmeasarement utilizing laser doppler effect are introduced. the factors influencing the affecting accuracy are expounded. moreover, the theory analysis and experiment - based methods are offered to improve the accuracy. this study can be applied in analyzing the surface profile and distortion, which is very important in theory and practice for the fields of aviation, mechanical and architecture industries
介紹了激光多普勒縱向位移測量的基本原理和方法，闡述了影響測量精度的要素，並在理論分析和實驗的基礎上，提出了改進措施.該項研究可應用於分析物體表面輪廓和變形狀況，對航空、機械、建築等工業有重要的理論意義和實用價值分享友人