雷達方向圖 的英文怎麼說
中文拼音 [léidáfāngxiàngtú]
雷達方向圖
英文
radar envelope- 雷 : 1. (雲層放電時發出的響聲) thunder 2. (軍事上用的爆炸武器) mine 3. (姓氏) a surname
- 達 : Ⅰ動詞1 (暢通) extend 2 (達到) reach; attain; amount to 3 (通曉; 明白) understand thoroughly...
- 方 : Ⅰ名詞1 (方形; 方體) square 2 [數學] (乘方) involution; power 3 (方向) direction 4 (方面) ...
- 圖 : Ⅰ名詞1 (繪畫表現出的形象; 圖畫) picture; chart; drawing; map 2 (計劃) plan; scheme; attempt 3...
- 雷達 : [訊] radar (縮自 radio detection and ranging)
- 方向 : direction; orientation
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4 a block diagram of phased array radar used which is used to measuring the distance, velocity and azimuth of the object in the horizontal plan and the highness in the vertical plane
4給出了水平方向採用二維譜估計技術測距離、速度和方位,垂直方向採用波束掃描測高的小型車載相控陣雷達系統框圖。Shows a vertical scan of the atmosphere taken by the lidar light detection and ranging on a fine, sunny day in april 2003. it shows sea breezes green against a background of easterly winds yellow and brown
顯示二零零三年四月一個陽光充沛的日子激光雷達所捕捉到的垂直切面圖像,當中顯示了海風綠色與從相反方向吹來的背景風黃褐色。Optimal antenna radiation pattern integration for multi - beam forming in high frequency radar
高頻雷達多波束最優天線方向圖綜合The text introduces the theory of the radar antenna " s scan wave by adopting the method of using wave width to describe antenna radiate direction fig
本文介紹了雷達天線的掃描波束理論,採用了用波束寬度描述天線輻射方向圖的方法。The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided
論文的主要工作包括四部分:第一部分研究了脈沖多普勒雷達導引頭的信號建模問題,建立了雷達信號模型,主要包括:發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式,建立了信號和數據處理模型,主要包括:加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等,然後給出了信號處理流程。Currently, to obtain high resolution airborne sar image is one of the most important directions of sar
獲取高分辨力合成孔徑雷達圖像是當今合成孔徑雷達發展的重要方向之一。In chapter 2, an accurate modified reynolds equation is derived. the modified reynolds equation is solved numerically with the finite different method, the generated axial thrust force, minimal mucus film thickness, load capacity of hydrodynamic pressure and circumferential friction under the rectangular screw are obtained. at last, using numeral methods and coordinate graphs, the influences of rectangular screw parameters on the generated axial thrust force, minimal mucus film thickness, load capacity of hydrodynamic pressure and circumferential friction are studied and analyzed
第二章,首先推導了非牛頓流體的變形雷諾方程,化簡了雷諾方程,得出了矩形螺紋下有限差分方程;還推出了矩形螺紋作用下軸向摩擦牽引力、粘液膜厚度、粘液膜承載能力、周向摩擦阻力無量綱表達式,最後用數值計算方法求解,通過坐標圖分析了矩形螺紋參數對軸向摩擦牽引力、最小粘液膜厚度、粘液膜承載能力、周向摩擦阻力的影響。Considering practical needs and developing trend of vts, based on analyzing the signal characters of vts radar video, studying basic data compression principles in information theory, comparing international coding standards in the forefront of image processing, a vts radar video coding system suitable for transmission in the narrow channel is proposed in this thesis. its main block ? oder and decoder, is realized in the common pc with software. the working process is demonstrated detailed
結合vts系統的現實要求和發展方向,本文從vts雷達原始視頻圖像數據的特點出發,從信息論中關于數據壓縮的基本原理出發,從現代信號處理特別是圖像信息處理領域中的壓縮編碼國際標準出發,提出了雷達原始視頻編解碼系統方案,其主體部分? ?編解碼器是在pc機內利用壓縮軟體實現,闡述了系統工作流程;提出了基於jpeg壓縮演算法和hOperations guide : cs and actually somewhat similar, upper right a radar map, to tell you which direction visual excitement while there, infinite ammunition, visual excitement while targeting only tried to shoot, it shot up to date, to be careful of is, as long as it is encountered, you freezing
操作指南:其實和cs有點似,右上角有個雷達地圖,告訴你哪個方向會出現人偶,彈藥無限,只須瞄準人偶拚命地射,直到射死它為止,要小心的是,只要被它碰到,你就掛掉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。This radar database system fits for china ' s radar network using object - oriented programming design method, recording some important parameters of radar data : the longitude, latitude of radar station, radar type, radar wavelength, radar data format, weather kind ( kind of intensity radar echo, schema of velocity radar, echo shape ) embodying in the radar data, etc. it also records the weather course information embodying in a series of relational radar data : the beginning time of weather course, the ending time of weather course, weather type, etc and the disk information, including recording time, recording contents, recording data number and weather type, etc. above all, this system realizes some basic operational processing : adding, deletion, updating, query of records and also some assistant functions : exportation, data transformation, displaying, backing up of data
該數據庫系統採用面向對象程序設計方法,用visualc + + 6 . 0作為應用程序的前端開發工具,用microsoftaccess2000做數據庫,不僅實現了對雷達基數據信息的一些基本操作:記錄信息添加、刪除、修改、查詢,還實現了處理、分析雷達基數據所需的一些操作:數據導出,數據格式轉換、數據回顯(圖像方式和動畫方式) 、數據壓縮、備份等,另外針對日前雷達臺站存儲雷達數據的現狀,還實現了對存儲光盤的管理。Firstly, the study of real two - channel data recorded by the airborne battlefield radar is made based on the methods of gmti, which including the study of methods of two - channel equilibrium, that of the precious estimate of beam scanning angle, that of the doppler center, that of the compensation for pattern error and that of gmti and that of location of the moving target using the phase - comparison mono - pulse method
首先,結合動目標檢測方法,對機載遠程戰場偵察雷達實驗系統錄取的雙通道數據的處理進行了研究。內容包括兩通道均衡方法研究,波束掃描角精確估計方法研究,多普勒中心估計方法研究,方向圖誤差補償方法研究,動目標的檢測和干涉定位方法研究。Noise and interference are inevitable in radar channel. they enter the received system through side or main beams, and reduce the system ’ s receiving signal - to - noise ratio ( snr )
在雷達通道中,不可避免地存在著噪聲和干擾,它們通過天線方向圖的邊波束或主波束進入接收系統,從而降低系統的接收信噪比。Through the collection of internal information, industry information, by the using of questionnaires, interviews, work - log, observation and other methods, we have a comprehensive understanding of the company. then focused on the status of human resources management and performance diagnostic analysis of the current situation, we identify problems and resolve these issues to determine the ways and ideas. by the relevant theoretical guidance of performance management, this article use the method of pie chart analysis, swot ( strengths, weaknesses, opportunities, threats ) analysis, radar map analysis, fish bone analysis, combined with bsc ( balanced scorecard ), kpi ( key performance indicators ), and use the idea of mbo ( management
在績效管理相關理論的指導下,本文利用了餅圖分析法、 swot分析法、雷達圖分析法、魚骨圖分析法等分析方法和工具對所收集的信息及數據進行分析處理,結合平衡計分卡( bsc )及關鍵績效指標( kpi )法的基本原理,利用目標管理法( mbo )的思想,將以結果為導向和以過程為導向的考核方法做了綜合,提取出了基於戰略,以崗位目標為導向,行為和業績並重的績效指標體系和具體的績效考核實施方案,並根據公司人力資源實際情況,結合績效管理pdca的理論思想,成功設計出了一套完整實用的績效管理體系。The research object of this dissertation is focused on the fusion of synthetic aperture radar and multi - spectral satellite images and with the purpose of optimizing the fusion of the integrated image information
本文以優化圖象整體信息為目的的圖象融合作為主要研究方向,研究對象為合成孔徑雷達圖象與多光譜圖象的融合問題。These radar images show two segments of the great wall of china in a desert region of north - central china, about 700 kilometers ( 434 miles ) west of beijing
這兩張雷達圖像顯示了中國長城在中國中北部荒漠地區的兩段城墻,在北京西部方向距離北京約700公里。Particular mathematic analysis is made about the characteristics and modeling methods of phased array antenna, especially of the density - weighted antenna. theory analysis and simulation are made about the circular ? caliber weight, circular - tylor distribution and bayliss circular ? caliber weight
相控陣天線部分是整個雷達系統的關鍵環節,天線方向圖模擬的準確與否直接影響到整個雷達系統模擬的準確性和精度。The radar images captured in the early morning upper one and late afternoon lower one on the same day of 21 may 2003 depicts very well radial beams caused by sunlight in the direction of the rising sun east and the setting sun west respectively
2003年5月21日清早上圖及黃昏時份下圖的雷達圖像分別清楚顯示出由太陽光所引致的條狀波束在日出東和日落西的方向出現。The radar images captured in the early morning ( upper one ) and late afternoon ( lower one ) on the same day of 21 may 2003 depicts very well radial beams caused by sunlight in the direction of the rising sun ( east ) and the setting sun ( west ) respectively
2003年5月21日清早(上圖)及黃昏時份(下圖)的雷達圖像分別清楚顯示出由太陽光所引致的條狀波束在日出(東)和日落(西)的方向出現。This dissertation has modeled for radar signal environment, such as radar pulse model, antenna direction chart model, antenna scanning model
在此基礎上研究建立了雷達信號環境的各類模擬模型:雷達脈沖信號模型、天線方向圖模型、天線掃描模型等。分享友人