方向誤差 的英文怎麼說
中文拼音 [fāngxiàngwùchā]
方向誤差
英文
deflection error-
The computational results of the particle images are agreement with the simulated datain reasonable, the most absolute difference of the displacement is 0. 6671 pixel at the x abscissa and 0. 7928 pixel at y abscissa ; the computational results are equal to the data form the algorithm of particle brightness - distribution pattern tracking ( the conventional cross - correlation algorithm ) at voluminous points, their discrepancy is only one pixel at few points, mostly in boundary area
西安理工大學碩士學位論文最後，在visualfortran環境下給出了這種演算法的具體實現，處理模擬粒子圖像的結果與模擬數據比較吻合，最大位移絕對誤差在x方向是0 . 6671像素，在y方向是0 . 7928像素;計算結果與示蹤粒子灰度分佈模板法（基本的互相關法）在絕大部分點是相同的，只在少數點相差一個像素，而且大多出現在邊界區域。Study of error compensation method for magnetic heading measurement system
磁航向測量系統誤差修正方法研究Error estimates of directional derivatives of approximately specified functions
近似已知函數方向導數的誤差估計Finally, this thesis discussed these following questions : first, the algorithm of used the error image for improving the purpose of the edge detection. secondly, we have transformed the solved question of the first and the second directional derivative to frequency domain and founded they have a single formulae in frequency domain. thirdly, we have described the singular signal and the noise by using the correlations of the neighbor data after wavelet transform
最後，在傳統的邊緣檢測演算法和小波分析的邊緣檢測演算法之外，對以下幾個方面也進行了一些討論： 1 ）利用誤差圖像來提高邊緣檢測效果的演算法； 2 ）將求解任意方向的一階、二階方向導數的問題轉換到頻域中去求解，發現在頻域中它們具有簡單易用的公式，使得原來求解任意方向的一階、二階導數的比較困難的問題變得容易實現了。The main work of the first part includes : introducing some methods of underwater sound positioning and analyzing their performance, analyzing the theory of measuring direction and distance of the target by three elements symmetrical and dissymmetrical array, comparing the measuring error of two kinds of array, and giving the theory of the generic arrays and discussing the phase wrapping and the distance wrapping in passive ranging
對被動測距技術的研究工作主要包括：簡單介紹了水聲定位的幾種方法，並對其性能進行了分析對比，分析了三元對稱陣和非對稱陣測向測距的原理，對兩種陣型的測向測距誤差進行了對比分析，還給出了一般陣型測向測距原理，最後還對被動測向測距中存在的相位模糊和距離模糊問題進行了探討。At first, this paper analyzes the factors of water - sand influencing water level of yellow river and the feasibility just using the factors of water - sand to study water level, and collects the corresponding data ; secondly, because there are strong nonlinear relation in the corresponding data, by meticulous theory analysis, this paper integrates basic nonlinear analysis method, theory of random analysis, method of least squares and so on. it puts forward a method which can get the high accuracy simulation of the data, perfects the multi - factor analysis of variable ( over three factors ) of the statistic ; thirdly, it applies the method to the approximation of corresponding water level process which belong to the capacity of sand of middle - high and middle - low, and get the high - accuracy simulation about the typical nonlinear relation ; at last, this paper definitudes the main influence mode that the capacity of sand. it mainly unite with other factors to work on the water level in the yellow river lower reaches ; mor eover, this paper analyzes the difficult point and the direction of improvement to realize the accuracy forecasting of the flood level of erodible - bed channel
首先，系統分析了影響黃河水位的水沙因素，及僅用水沙因素有效研究水位的可行性，並按變量對應思想採集它們的相應數據；其次，由於相應水位過程數據中含極強的非線性關系，本論文經細致的理論分析，將基本的非線性分析方法、統計建模方法、隨機分析理論、最小均方誤差原則等等數學理論及方法有機揉合，提出了能有效實現這類數據高精度擬合的分層篩選法，並改進了統計學中多因子（三個以上）方差分析法；再次，將這一方法用於黃河中高及中低含沙類洪水相應水位過程的擬合，實現了這一典型非線性關系的高精度擬合，各年汛期上下游相應洪水位過程的擬合誤差都較小；最後，明確黃河下游含沙量對水位的主要影響方式，即含沙量主要是與其它因素聯合對水位作用；另外分析了要實現變動河床洪水位過程準確預報的困難所在及改進方向。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。The affect of error of antenna pointing in formation satellite insar system to direction picture
系統中天線指向誤差對天線方向圖的影響This paper develops a method to estimate position of emitter based on distribution characteristics of bearing measurement errors
摘要在測向交叉定位的基礎上，提出了一種根據測向誤差概率分佈特性估計目標位置的方法。We prove theoretically that under certain reasonable assumptions the formation is asymptotically stable even wills bounded disturbances ; that is, the proposed sliding mode controller can asymptotically stabilize the errors in relative distance, relative bearing and heading direction, respectively
在合理的假設下，從理論上證明了存在有界干擾情形下機器人編隊的漸近穩定性，即所設計的滑模控制器使得相對距離誤差、方位角誤差及運動方向誤差漸近穩定。Abstract : the attitude error performance of electrostatic gyro should be understood and the relevant error equations must be set up in order to ensure the navigation precision of esgm. the relation between the navigation errors and the attitude errors of gyro was derived by use of spherical triangle. the simulation results show that the temporal performances of the longitudinal and distance errors which come from the initial alignment errors are periodically variational. they also show that the longitudinal and distance errors resulted from gyro drifts are not convergent in time. thus, the effects of initial alignment errors and gyro drifts can not be neglected and must be estimated and compensated
文摘:為了保證靜電監控器的導航定位精度，需要了解靜電陀螺的姿態誤差特性，建立相應的誤差方程.本文採用球面三角形原理推導了導航定位誤差與陀螺姿態誤差的關系式.模擬結果表明，由初始定向誤差引起的經度誤差和距離誤差的時間特性是周期變化的；由陀螺漂移引起的經度誤差和距離誤差是隨時間發散的.因此，初始定向誤差和陀螺漂移的影響不能忽略，必須對其進行估計和補償To eliminate or lessen the system errors caused by the offset and slope of the thin aluminum sheet when measuring its surface, and to avoid over - cutting while machining the honeycomb surface, the saddle - point programming is applied to the position optimization of the theoretical surface. to generate the cnc program of the honeycomb sandwich, the equidistant calculation of the actual surface is produced and the data processing software is developed
利用鞍點規劃方法優化理論橢球面的位置，使實測曲面相對理論橢球面的最大法向誤差達到最小，減少或消除了蒙皮內表面測量時由於定位的偏心或歪斜引起的系統誤差，使誤差均化，防止了配對加工蜂窩夾芯表面時少切或過切現象的發生。This paper mainly studied how to design computer aided assembling coordination charts and calculate coordination accuracy, which adopted object - oriented method, error analyzing, knowledge disposing technology and human - machine interaction technology
本文採用面向對象方法、誤差分析方法、運用知識處理技術、人機交互技術，重點研究了計算機輔助裝配協調圖表的設計及協調準確度的計算問題。Constant direction error
恆定方向誤差These include the folio wings : l. we raised the concept of direction - error ; 2. we considered the forecasting errors and calculated the right of the comprehensive forecasting models with ahp ; 3
相應地，我們也都做了一些思考，提出了自己的觀點與方法，主要有： 1提出方向誤差的概念； 2This method, prepared with some single coordinate methods, is effective for both reducing orientation error and wiping out noise, and has better performance for preprocessing of noisy fingerprint images
它包括獲取方向圖、基於方向的濾波、二值化與細化等步驟，有效地減少了計算指紋圖像的方向誤差，去除干擾，得到更清晰準確的處理結果。This paper introduce the status and fuction of radio monitor in the radio spectrum management at first, and explain radio monitoring center build every specification requirement put forward to national radio monitoring system, at the sam time, the paper analyses the radio interferece, examineto error, the comprehensive pain of design of monitoring system of handling, combining the actual proposition hi our province
本文首先對無線電監測在無線電頻譜管理中的地位作用和職能作了介紹，闡述了國家無線電監測中心對全國無線電監測系統建設提出來的各項技術要求，並從理論上就在無線電系統建設中需解決的無線電干擾，測向誤差，電磁兼容等問題作了分析。然後結合我省無線電管理工作的實際提出了搬移式綜合監測系統的設計方案。Simulation results indicate that the closed - form guidance law with robustness is fit to the finite propulsive reentry mission and insensitive to the initial position errors, propulsion direction errors and observation errors
模擬結果表明，該閉路初制導能夠完成有限推力情況下的再入初制導任務，對初始位置誤差、推力方向偏差和測量誤差不敏感，具有一定的魯棒性和適應性。This controller is designed to stabilize angle error, front error and side error separately based on the kinematic model of the rover. the simulation results show the lunar rover can be stabilized to expected point by our proposed method
以月球車的運動學模型為控制對象，分段鎮定月球車的方向角、前向誤差和側向誤差，最終使月球車鎮定到坐標原點。Besides, it ’ s also very convenient to add many kinds of phase errors required by the phase error compensation and sar image processing research farther. for imaging algorithms, range - doppler algorithm is extended to broadside stripmap airborne bistatic sar successfully
另外，在我們方法的流程中可以方便地加入載機運動參數誤差、天線波束指向誤差及頻率源的穩定性等各種相位誤差，也為今後進一步研究相位誤差補償及圖像處理等技術打下了良好的基礎。分享友人