radon method 中文意思是什麼

radon method 解釋
氡測法
  • radon : n. 【化學】氡〈由鐳裂變後生成的放射性元素，舊名 radium emanation 〉。 radon daughters氡放射性衰變產物〈香煙煙塵中的一種放射性微粒，對被動吸煙者的健康有害〉。
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. Due to the short distance among the planes which fly in a group, the conventional low resolution radar can not distinguish them in both distance and azimuth ? if we use the technology of isar to resolve the difference among doppler frequency of the targets and obtain a fine resolution cross - cross image, we may separate them, but a long time of coherent processing is needed <, for the formation targets, it can be approximately divided to rigid body and nonrigid body, so for the formation targets, that can be regarded as rigid which has a relative position and an identical movement, can be approximately considered as a large target, and be compensated by translational phase with the rule of minimum entropy, but for the most those cannot accord with the approximation of rigid, being the doppler - frequency of the aim is linear changed, by the relax method with short data, increases the resolving performance of multiple target to the aim in the frequency domain, since cross - range resolution is based on the accumulative time, so it is greatly improve the resolution to formation targets by the instant cross - range image which produced by radon - wigner transformation

    低分辨isan成像及干涉技術應用研究一因此直接無法分辨編隊目標的架數，我們借鑒isar的技術，通過較長時間的相干積累，在多普勒頻域上對目標進行分辨。而對于編隊目標，可分為近似剛性的多目標和非剛性的多目標，所以對于可以近似為剛體的編隊目標相對位置固定，運動方式一致，可以近似看作一個大目標，採用最小墑準則對平動相位的進行補償，但是大多數並不滿足剛體近似的編隊目標，由於目標在相干積累時間的多普勒頻率近似呈線性變化，通過對較短數據利用relax的時頻分析方法，提高了頻率域上目標分辨的性能。由於橫向解析度取塊于橫向積累時間，所以利用radnwigner變換得到瞬時的一維橫向距離像大大提高了對編隊目標的分辨，對模擬和實測數據的大量分析結果表明此方法的有效性和可行。
  2. Nuclear energy - measurement of environmental radioactivity - radon 222 : methods for estimation of the surfacic activity of exhalation by accumulation method

    核能.環境放射性的測量.氡222 .用累積法評估發散物表面放射性活度的方法
  3. Passive measurements of radon - part 1 : track etch method

    氡的無源測量.第1部分:記錄槽蝕刻法
  4. This paper studies the characteristic of scatter from moving target in the situation of bistatic sar with stationary transmitter. the wvd method is used in the paper to estimate the doppler frequency parameter of the moving targets ; the wvd - radon method is used to restrain the cross - term. then we can use the result to adjust the parameter of the filter, and to achieve the moving targets imaging of bistatic sar

    本文分析了發射機固定的雙站sar情況下的運動目標回波信號模型，應用wvd變換對發射機固定的雙站sar回波的多普勒信號參數進行估計，並採用wvd - radon變換來抑制wvd的交叉項，以調整濾波器參數，實現發射機固定的雙站sar對運動目標聚焦成像。
  5. Exemplified by the qixian geothermal area, this paper points out that the combination of the radon surveying method and the magnetic method is an effective means in search for geothermal resources

    以祁縣地熱區為例，說明測氡法與磁法相結合是尋找地熱資源的一種行之有效的手段。
  6. The study of this paper indicates that, the combined binarization method can keep details well and tolerate the abominable state ; the method to estimate skew angle based on radon transformation is very exact, and the distortion of corrected image is also very little ; the vlp location method based on wavelet analysis and intensity moment has a high location exactness and a soon processing time ; and intelligent character recognition machine can accomplish the function of self - adaption, self - correction, self - study, etc

    本文研究表明：混合二值化方法能較好的保留圖像細節，抗噪聲能力強；基於radon變換估計傾斜角度的方法檢測角度精確，校正後圖像失真較小；基於小波分析和亮度矩的車牌定位方法定位準確率高，速度快；仿人智能字元識別器則能實現識別字元過程中的自適應、自校正、自學習功能等。
  7. At first, the image was binarized by using ostu method. then the skewness of the image was dectectd by radon t.

    首先用大津法對圖像進行二值化，然後用radon進行傾斜檢測，最後用數學形態學開運算減少干擾，用投影法框定待識別標題位置。
  8. Scintillation flask method for measuring radon concentration in the air

    空氣中氡濃度的閃爍瓶測量方法
  9. Secondly, we study the preprocessing part of system, a method of bidirectional multi - resolution motion estimation via radon transform is proposed, which can be used to estimate both pixel and subpixel motion vectors with robustly accurately and efficiently. bad frames elimination via the variances of lr frames in the sequence is preformed before the implementation of the super - resolution algorithm

    其次討論了超分辨預處理過程，提出了基於radon變換的雙方向多解析度運動估計方法，演算法可以穩健、精確的在較大范圍內實現亞象素運動估計;以圖像方差為標準，判斷序列圖像中個別幀損壞嚴重為「壞幀」 ，在超分辨重建之前預先去除。
  10. Passive measurements of radon - part 2 : charcoal measuring method

    氡的無源測量.第2部分:活性碳測量法
  11. After this, we can estimate the skew angle based on radon transformation. and then we also propose a method to rectify the traffic plate with two steps

    文中還提出一種基於radon變換估計傾斜角度的方法對二值化圖像進行傾斜角度檢測，以之對二值化圖像實行校正。
  12. Based on above analysis, a acceleration estimation method based on radon wigner transform ( rwt ) is proposed

    基於上述對高頻地波雷達機動目標回波的分析，本文擬採用rwt方法進行加速度估計。
  13. In this paper, a three - dimensional ( 3d ) program for the three - dimensional reactive flow fields of complicated geometric nozzle, which governed by the compressible full navier - stokes equations with realizable k - s turbulent model, has been upbuilt by using full implicit couple arithmetic and fvm ( finite volume method ) based on understanding and assimilation of a two - dimensional program group of cr ( chamber - radon ). the new program fulfils the urgent need of numerical tools for simulating three - dimensional reactive flow - fields of hylte ( hypersonic low temperature ) and other latest nozzles, for which cr is out of action in simulation, and can be applied to simulate other chemical laser system, such as chemical oxygen iodine laser ( coil ), overtone fluoride hydrogen, all - gas iodine laser, and so on. furthermore, some related topics about nozzles design and engineer ing also have been discussed

    本文在二維cr （ chamber ? radon ）程序研究的基礎上，採用有限體積方法和完全隱式的耦合演算法，通過求解帶realizablek -兩方程湍流模型的多組分、有反應的三維完全納維埃?斯托克斯（ n ? s ）控制方程，建立了一套能夠對復雜形狀的三維噴管和光腔進行數值模擬的三維程序，解決了連續波df hf化學激光器增益發生器設計缺乏三維數值模擬工具的問題，並用該工具解決了cr程序無法實現的hylte等復雜三維噴管流場的理論模擬問題。
  14. Aiming to solve this problem, the work of the thesis is shown below : 1. the product ambiguity function ( paf ) - based adaptive time - frequency distribution is proposed. in specific, two adaptive methods for kernel design, the radon - paf based method and the paf - lag - varying filter based method, are presented

    本文針對這一問題開展了如下工作: 1 .提出了基於乘積性模糊函數的自適應時頻分佈，並給出了兩種針對線性調頻信號的自適應核函數設計方法，包括基於radon - paf濾波和基於paf時變濾波的方法，使得該時頻分佈能夠在增強時頻聚集性的同時抑制交叉項。
  15. Plentiful simulations are presents and discussed. in the third chapter, a modified radon - wigner transform algorithm with two - step searching and clean method is proposed, which is used in radar multi - target resolving and parameter estimation

    首先分析了基於radon - wigner變換的參數估計原理，提出了變尺度兩級搜索演算法，並應用頻域信號分離技術，對原radon - wigner變換改進，並進行了模擬。
  16. In order to solve problems existing in current measuring methods for radon exhalation rate ( such as the effect of unequilibrium radon and its progeny, humidity effect, leak and back - diffusion effect, etc. ), based on the principle of surveying radon and its progeny in the medium surface, a rapid arid accurate method for measuring radon exhalation rate taking advantage of the rad7 radon detector was established

    摘要本文根據介質表面氡析出率的測量原理，針對目前國內外現有的氡析出率測量方法中存在的一些問題，如對氡及其子體的不平衡影響、濕度效應及泄漏和反擴散等影響未作修正等，實驗研究了一種用rad7型氡氣檢測儀快速測定土壤、巖石、建材和尾礦等介質表面氡析出率的方法。
  17. A high - resolution method for frequency measurement is strongly introduced in the paper, which is aim at detecting the frequency of regular and binary phase coding modulated pulse signals with high frequency precision. considering the popularity of linear frequency modulated ( lfm ) signal in electronic systems, this paper then referred a radon - stft arithmetic to calculate the carry frequency of lfm signal. both of these methods referred above are implemented in the signal if detection software

    針對常規脈沖調制信號和脈內二相編碼調制信號，本文提出一種高精度的數字化測頻方法，以提高信號載頻測量精度;線性調頻信號作為一種典型的非平穩信號在各種領域應用十分廣泛，但對其載頻的數字化測量比較困難，本文利用圖像處理中的radon變換與信號時頻分析中的線性變換相結合的演算法來完成對其載頻的測量。
  18. The paper discusses basic principle, working method and data processing of radon surveying. considering radioactive decay of radon surveying data and many disturbing factors in the actual work, we require analysis, emendation and processing actual data

    本文在論述了測氡的基本原理、工作方法及數據處理的基礎上，針對測氡數據放射性衰變的特點和在實際工作中受干擾因素較多等原因，要求對實測數據進行分析、校正與處理。
  19. The analysis and application of the radon - measuring method in typical areas in combination with drilling results have proved it to be obviously effective

    通過典型地區剖析和應用，結合鉆探成果證實測氡法效果明顯。
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