極化圖 的英文怎麼說
中文拼音 [jíhuàtú]
極化圖
英文
polar plots-
Ship detection algorithm in polarimetric sar images
極化合成孔徑雷達圖像船舶目標檢測演算法For experimental measurement. the spin density distributions are in detail discussed on the basis of mulliken population analysis, taking into account the coexistence of spin delocalization and spin polarization mechanisms. for
密度泛函自旋密度自旋極化自旋離域分子磁性中圖分類號：The results of the experiments are then discussed in detail. the applications of polarimetrtic interferometry in the classification of the land cover of sar images are studies in the end of the disse
最後，論文研究極化干涉在sar圖象地物分類中的應用，給出極化干涉非監督wishart分類演算法及其處理步驟，並對實驗結果進行分析。In order to grasp the urban system processes and evolution pattern of hunan province comprehensively, this article has made further discussion on its structure characteristic : through regression analysis, graph analysis and statistics analysis of the time series data and cross sections data, by combining with the fractal theory, we induce the following conclusion : the hierarchical size structure presents the law of the primate city, the rank - size rule and pyramid structure characteristic, but it also has the insufficient development problem of the high hierarchical size city. by using the gravitation model, we found out that the economy relation intensity among those main cities is weak while the structure is loose. based on the urban layer system of economic development level and industrial structure evolution of the cities in hunan province, this article then induces the function combination among the five urban agglomerations in hunan province
為全面把握湖南城市體系的運演規律，本文對其結構特徵作了進一步的探討:通過時序數據和截面數據的回歸分析、圖表分析和統計分析，結合分形理論，得出了其等級規模結構分佈呈現出首位分佈、位序?規模分佈和金字塔結構特徵，以及存在著高層次城市發展不足的問題;運用場引力模型發現該省主要城市間的經濟聯系強度較弱、結構鬆散，在歸納出該省城市經濟發展水平的層次體系、產業結構演變的基礎上，導出了該省城市體系的五大城市群職能組合;結合空間結構體系、路網交通條件和經濟發展狀況，對該省城市空間分佈狀態進行了定性分析，研究表明該省總體上處于極化階段，各個具體區域，分佈階段不一，差異較大。By computing the between two resolution units, we can estimate terrain azimuthal slopes and derive estimate of terrain elevation. the terrain contour is determined uniquely by ay / from azimuth slop on range gates. american began to study p - sar three - dimensional images technology in 1990s
Schuler已經證明，對於一個均勻分佈場景， sar圖像上兩個相鄰分辨單元的極化橢圓方向角偏移量，與地形方位向坡度的對應關系是線性唯一的，地形方位向的傾斜度可以通過解唯一地被測定。Aluminium and aluminium alloys - anodizing - part 14 : visual determination of image clarity of anodic oxidation coatings - chart scale method
鋁和鋁合金.陽極化.第14部分:用目視測定陽極氧化層的圖像清晰度.圖表比例尺法Analysis of near - field distribution and cross - polarization radiation pattern cavity - backed microstrip patch antenna on a uniaxial substrate
單軸各向異性背腔式微帶貼片天線的表面縫隙場分佈及交叉極化方向圖分析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。Through the i 、 q component of ipix radar sea clutter data " s histogram analyses and by skewness and kurtosis computed, it is been shown that sea clutter amplitude is not rayleigh distribution ; through the comparison of amplitude histogram and distributed models with the same parameters, it is been shown that hh polarization clutter is lognormal distribution, whereas vv polarization is k - distribution ; at the same time the correlation function and power spectrum density are been analyzed, at last the correlation compound k - distribution stochastic sequences whose covariance matrix is been given are been generated through sirp algorithm
文中先介紹了海雜波幅度的有關模型，通過對ipix雷達海雜波數據的i 、 q分量的直方圖以及傾斜度和峰度進行了分析和計算，證明了海雜波幅度不服從瑞利分佈;使用幅度直方圖和相同參數下的各種分佈模型進行比較，得出hh極化符合對數正態分佈，而vv極化服從k -分佈的結論;同時對海雜波的相關函數和功率譜進行了分析，最後使用sirp演算法產生了給定協方差矩陣的相關復合k -分佈隨機序列。A polarimetric sar combines both advantage of measuring full complex scattering matrix for each resolution cell in a scene and producing two - dimensional high resolution images, and is thus playing a more and more important role in gathering the detailed information regarding the geometric and electric structures of surfaces and covers for application in both civil and military areas
極化合成孔徑雷達（ sar ）具有可以測量場景中每個分辨單元的全極化散射矩陣以及產生二維高分辨力圖像的兩大優點，因此無論在民用和軍用的採集地表或地面覆蓋物的物理和電磁結構信息的應用中起著越來越重要的作用。The polarimetric sar is a new type imaging radar to measure polarimetric characteristic of radiant signals and combines both advantage of measuring full complex scattering matrix for each resolution cell in a scene and producing two - dimensional high resolution images, which greatly improve its ability to discern surface features. polarimetric sar is thus playing a more and more important role in research on remote sensing and application area
極化合成孔徑雷達（ polarimetricsar ）是用來測量輻射信號極化特徵的新型成像雷達，具有能夠測量場景中每個分辨單元的全極化散射矩陣和產生二維高解析度圖像的兩大優點，大大提高了它對地物的識別能力，因此在遙感技術研究與應用領域中起著越來越重要的作用。Two series of catalysts were preparated by co - deposition and sol - gel methods each. and each serie of catalysts was analysed by xrd spectrums, and was preparated to be air electrode with the optioned compoundings and manufacturing process. the cathode polarization curves were elementarily studied
實驗還利用共沉澱和溶膠凝膠法合成了兩類催化劑，分析了其xrd譜圖，利用優化過的配方和工藝制備了空氣電極，初步研究了其極化曲線，並對其中最好的催化層進行了sem觀察。Aluminium and aluminium alloys - anodizing - part 18 : rating system for the evaluation of pitting corrosion - chart method
鋁和鋁合金.陽極化.第18部分:點腐蝕評價用額定值系統.圖表法Terrain slope information can be drawn from polarimetric synthetic aperture radar ( sar ) two - dimensional image, so that three - dimensional image can be generated. it differs from two - pass or repeated trace insar that uses interference phase method to obtain topography height. the p - sar three - dimensional image technology uses the stokes matrix formed by two - dimensional images resolution cells, then applying polarimetric synthesize to stokes matrix can produce polarization signature of the scatter cross - section a - (, x ) for any ( ellipticity ) and ( orientation ) polarization state
這種方法不同於重復軌道和雙通道insar系統，不是利用干涉法提取高度信息，而是利用極化sar二維圖像各分辨單元的stokes矩陣，通過極化綜合估計每個分辨單元的共極化散射特性和交叉極化散射特性（極化指紋） ，以及共極化散射特性最大值時對應的極化橢圓度x利極化橢圓方向角，求解地形的高度輪廓。It is widely used in both civil and military areas now. since sar and polarimetric sar is a coherent imaging system, its inherent speckle noise will produce important influence on the post - processing of sar images, such as target detection, classification and recognition, etc. so, speckle reduction becomes to the first step of sar images post - processing
由於sar和極化sar的相干成像特性，其固有的相干斑噪聲嚴重影響了后續目標檢測、分類和識別等應用，因此相干斑的抑製成為sar和極化sar圖像后處理的第一步，這種噪聲的抑制方法一直是極化sar信號處理領域一個很值得探討的問題。There is an urgent need for the polarimetric synthetic aperture radar ( sar ) data to be calibrated, so that the quantitative relationships between radar backscatter and geophysical parameters can be properly established, along with the development of international polarimetric sar technology and more and more in - depth study and application of polarimetric sar data. up to now a lot of polarimetric sar calibration methods have been developed. some of them have been used in several applied sar systems and the calibration results are satisfying
隨著國際上多極化合成孔徑雷達技術的發展以及雷達圖像應用的門益廣泛和深入，定量化應用的要求逐漸變得迫切，因而極化定標技術得到了廣泛深入的研究，並且涌現了大量的各有特色的演算法，有些也已經投入具體系統的實際應用中並獲得了令人滿意的結果。Aluminium and aluminium alloys - anodizing - part 14 : visual determination of image clarity of anodic oxidation coatings ; chart scale method ; german version en 12373 - 14 : 2000
鋁及鋁合金.陽極化處理.第14部分:陽極氧化覆層圖像清Because of the full target texture and the acute speckle of the microwave - imaging machine, especially for the single frequency, single look and single polarization sar images, it is very difficult to extract image characteristics in the image pixel level
Sar圖像地物分類技術的困難性主要源於微波成像的特殊機理和嚴重的相干斑干擾，使得基於圖像象素層的特徵提取非常困難。對單視單極化sar圖像而言，這個問題更為突出。We use image quantization and image enhancement techniques to preprocess the polsar data. we then use the polarimetric information and fuzzy c - means ( fcm ) clustering algorithm to classify the preprocessed images
我們使用圖像量化和圖像增強技術對原始sar數據進行預處理;在特徵空間中利用極化信息、使用模糊c均值（ fcm ）演算法對預處理后的sar圖像進行分類。The suitable tree - like and 3 / 2curve fractal symmetrical vibrators are chosen to make up a log - periodic antenna ( lpda ), the performance, such as reflectance, input impedance, radiation pattern and gain are also compared with normal log - periodic antenna by cst microwave studio ? simulation, in order to investigate the effect of antenna miniaturization. the application of fractal technology in microstrip antenna is introduced at
最後本文介紹了分形技術在微帶天線中的應用，研究了minkovski分形雙層微帶天線的阻抗特性和方向圖特性，並與普通雙層微帶天線的性能進行比較，討論了minkovski分形對微帶天線尺寸的縮減作用，同樣研究了分形對交叉極化的影響。分享友人