elevation error 中文意思是什麼
elevation error
解釋
仰角誤差-
Its main contributions include the following several aspects : firstly, the dissertation constructs the mathematic model of short baseline orientation determination using two geostationary satellites and analyses the applicable conditions of carrier phase interferometry. orientation determination precision is analysed in depth through both the conventional linearized method and monte - carlo computer simulation method, and the mathematical simulation results show that the linearized method has the shortcoming of fairly low elevation error analysis precision in high latitude area so as not to be very appropriate there. by analyzing the definite factors influencing orientation precision, the dissertation develops the concept of orientation dilution of precision, which uncovers the internal cause of exotic error behavior of bi - satellite orientation, and has important guiding significance for practical engineering applications
本文系統地研究了基於「北斗一號」衛星載波相位干涉測量原理實現地球靜止雙星定向的相關技術，主要研究成果包括以下幾方面:首先，建立了利用兩顆地球靜止軌道衛星進行短基線定向的數學模型，分析了載波相位干涉測量的適用條件;採用傳統的線性化解析法及蒙特卡洛隨機模擬法兩種途徑對雙星定向的精度進行了詳細分析，數學模擬結果表明在高緯度地區線性化解析法由於俯仰角誤差分析精度略有下降而不太適合;在分析定向精度確定性影響因素的基礎上，提出了雙星定向精度衰減因子odop的概念，揭示了雙星定向誤差特殊表現的內部機理，對實際工程應用具有重要的指導意義。 -
Angular calibration of radar antenna system is composed of the calibration of angular error sensitivities ( also called directional sensitivity ), adjustment of cross - coupling of azimuth and elevation signals, and the calibrations of system errors such as antenna axial system error, dynamic delay and so on
雷達系統天線的角度標校包括對系統角誤差靈敏度（又稱定向靈敏度）的標定、方位俯仰信號交叉耦合的調整以及對天線軸系誤差、動態滯后等系統誤差的標定。 -
By calculating parameters including the link length, the azimuth angle, the elevation, the optical power that the inter - satellite optical cdma communication system will receive, the variation range of the azimuth angle and the elevation from the optical antenna of atp are understood well. by analyzing the factors to impact bit - error - rate ( ber ) from the received power, multi - user disturbing, background noise, wavelength, bit rate etc, measures to guarantee high performances of the system are obtained, especially those for smoothing the fluctuation of the received optical power from host platform vibration
分析研究了衛星光cdma通信系統中衛星仰角、方位角和距離，給出了探測器能夠接收到的光功率以及atp子系統捕獲及跟瞄的范圍;對衛星光cdma通信系統性能模型和基於衛星振動系統性能模型的研究，分析了多用戶干擾、接收光功率、背景光噪聲、振動偏差以及碼速率對系統誤碼率的影響，給出了相應的改進措施。 -
The deflection ' s computation is complicacy when considered the agents included concrete creep. so we should compare the calculation results with design date before construction to find the problem. we should continually adjust the elevation date in construction control to reduce the error
考慮徐變后結構的撓度計算是極其復雜的，因為它包含了包括混凝土徐變在內的許多因素，而且即使計算出預拱度，在施工之前也應將計算數據並與設計值比較，從而發現問題。 -
In the radar elevation coordinate, the multipath effects are more severe, which cause periodic peak error in the target height measurement
在雷達俯仰角（目標高度）方向上多徑誤差的影響尤為嚴重，使得目標高度的測量誤差表現為周期性的尖峰誤差。 -
According to the design theory of the cable - stayed bridge and to the feature of the cantilever construction the authors propose a construction control method called optimum completion state method ( ocsm ) for rc cable - stayed bridges in the proposed method, the optimum completion state is regarded as the final target of the construction control, and the optimum construction state at each construction stage is taken as the technical route the key of the method is to properly choose or adjust the cable forces the objectives function of optimization is to minimize the elevation error of the girder under the constraint condition that the internal forces ( bending moments ) of the girder are bounded the optimization variables are the cable forces on the basis of the above principles, a optimum model for a construction step is established and cable force adjustments can be found for each construction step in this model, the creep and shrinkage effects of concrete have been considered a bridge example is given which shows that the final state of the bridge is very close to the design aim and that this method is much better than the so - called double - control method the example is a good illustration of the soundness and practical value of the proposed method
根據現代斜拉橋結構設計理論和懸臂施工方法的特點，提出了以最佳成橋狀態作為施工控制的最終目標，以實施最佳施工階段為技術路線，以索力調整為核心內容的斜拉橋施工控制理論，簡稱為最佳成橋狀態法；以斜拉橋主梁標高誤差最小為目標函數，以主梁內力（彎矩）為約束條件，以索力為優化變量，建立了最佳施工階段的索力調整計算模型；推導了考慮徐變收縮效應的索力調整計算公式；用最佳成橋狀態法對一實橋工程進行了施工控制全過程計算研究，得到的成橋狀態與設計目標相當接近，優于該橋以「雙控」為控制目標的實測結果，有力地證明了本文方法的正確性及其工程實際價值 -
D. l. schuler has proved the elevation error from polarometric sar terrain height measured, compared with the elevation error from insar, is same statistically
試驗結果表明極化sar三維成像的高度測量誤差與insar三維成像的高度測量誤差的統計值基本相同。 -
This dissertation is organized to first provide an overview of the insar theory, all kinds of decorrelation factors, and the error sources of the digital elevation model ( dem )
本文首先對干涉sar的基本工作原理，影響干涉數據相干性的各種因素、數字高程圖的誤差來源等進行了系統闡述。 -
This paper mainly studies the coupling error caused by induction voltage phase difference, and fluctuation of directional sensitivity caused by changes in near - field difference slope. the trend of system sum and difference phase difference, directional sensitivity and cross - coupling with change in distance is compared and discussed when the antenna is in the near - field and at a certain elevation
本文著重研究了因近場感應電壓相位差引起的耦合誤差，以及近場天線差斜率變化引起的定向靈敏度的變化；討論了天線在近場並有一定仰角的條件下，隨著距離的變化，系統和、差相位差、定向靈敏度與交叉耦合的變化趨勢。 -
The results of computer simulation a re proved. thirdly, the paper analyze the angle error caused by elevation axis not in horizontal plane, make a conclusion that 3 - axes perpendicular radar can not track in the whole airspace, propose the structure of slant 3 - axes radar
然後，從工程實際出發，著重分析了俯仰軸不嚴格水平對雷達測角系統造成的誤差，得到了正交三軸雷達並不能進行全空域跟蹤的結論，提出了傾斜三軸的雷達天線座結構形式。
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