觀測量 的英文怎麼說
中文拼音 [guāncèliáng]
觀測量
英文
observed quantity-
Also, vsop cannot frequently change observing object, hence it cannot supply more observations to many quasars, which are required for geodesy and geodynamics
Vsop還不適合於頻繁改變觀測對象，所以無法提供針對多個射電源的觀測量，而這正是大地測量和地球動力學所需要的。Its only contact with reality is through observable quantities.
它與真實唯一的接觸是通過可觀測量實現。Gps receivers belong to the user equipment, mainly used to receive satellite signals and telegraphese, measure the distance from receiver to the satellites by the wireless signals, compute the position and speed of satellites by telegraphese, then compute the position and speed of user
Gps衛星接收機屬于衛星導航定位系統中的用戶設備，主要用於接收衛星信號和電文，由無線電信號測定用戶至衛星的距離，或多普勒頻移等觀測量;根據導航電文，計算觀測衛星的位置和速度，根據觀測量和衛星的位置、速度，解算出用戶的位置和速度。Thirdly, an ideal satellite orbit is simulated, and on this foundation, we establish some typical simulation and testing circumstances. lastly, after simulation in the simulation and testing circumstances, we compare the performance of ukf and ekf. and then, based on the outdoor experiment of the vehicle, an analysis and contrast between our simulation results and commercial data process software is carried out, and the conclusion is obtained
首先在第三章提出的目標運動模型的基礎上建立了系統狀態方程;其次簡要分析了衛星導航系統中的各類誤差，建立了基於偽距觀測量的系統觀測模型;第四節利用yuma格式歷書數據模擬了未受攝動影響的衛星軌道，並在此基礎上建立了幾種典型的動態模擬測試環境;第五節為模擬分析和比較，先對ukf演算法和ekf演算法在動態模擬測試環境中進行了模擬比較，然後針對外場試驗，對非線性濾波獲得的定位結果與商業軟體進行了分析比較，並得出結論。Aiming at the nonlinearity of state and measure equation and measurement being only angle information, which results in poor observability and classical estimate methods such as extended kalman filter not converging, the boost phase states and covariance are estimated using unscented kalman filter ( ukf )
針對狀態方程和觀測方程都是非線性方程，觀測量只有角度信息，造成可觀測性弱、經典的濾波演算法如擴展卡爾曼濾波方法不易收斂的問題，利用unscented卡爾曼濾波ukf演算法對主動段進行狀態和協方差估計。High precision positioning is based on carrier phase measurements. how to confirm integer ambiguity is very important
以載波相位觀測量為依據進行高精度定位時，整周模糊度的確定是一個關鍵問題。In the thesis, i introduce the theory and application of gps carrier phase measurement, analyze the errors in the observation of gps signal, study the ways to reduce these errors, specially for the error caused by multipath
論文介紹了gps載波相位測量技術的原理和應用，分析了gps觀測量的誤差，研究了減小和消除各種誤差的方法，重點是減小多徑效應的影響。Recently, with the development of gps, many researchers pay attention to the aircraft ' s precise entrance and landing through gps carrier phase measurement. the key technology of aircraft ' s precise entrance and landing is gps carrier phase integer ambiguity resolution on the fly
近年來，隨著gps的發展和完善，利用gps載波相位觀測量實現飛機的精密進場與著陸的研究，開始受到人們的關注，而載波相位整周模糊度的動態確定是其中的關鍵技術。The inconsistent excitation can be decomposed into a series of irregular incident waves in terms of the spectral decomposition scheme of the hermitian matrix, with which the coherency function of the ground motions under the inconsistent excitation can be obtained numerical results are given to show its stability and rationality
該方法將隨機輸入下的波動分析問題轉換為多個虛擬激勵下的確定性波動分析組合問題，從而可以方便地獲得場地波動觀測量之間的譜密度矩陣，進而計算給出工程場地的地震動相干函數本文還用數值模擬的辦法對所提出方法的合理性和穩定性進行了探討。Integer ambiguity resolution is the key problem of gps based real - time attitude determination system which use double differencing carrier phase observables
Gps姿態測量通常採用雙差載波相位觀測量，因此整周模糊值解算成為gps實時姿態測量的關鍵問題。Z - tranformation augmented fasf algorithm proposed in the dissertation can reduce the search space of integer ambiguity effectively, improve the effiency and real - time processing ability of integer ambiguity resolution ; it is essential to analyse the reliability of integer ambiguity after it was fixed, the ratio test algorithm proposed in the dissertation can reduce the time to fix new integer ambiguity after wrong fixes are detected ; to reduce further the number of epochs required for ambiguity resolution, that the baseline length constraint information which acts as observables is used to do kalman filtering to speed up ambiguity resolution is proposed
本文提出的z變換增強fasf演算法能有效的減小模糊值搜索空間，提高整周模糊值解算的速度和實時性；整周模糊值確定后，需要對整周模糊值的可靠性進行分析，本文提出的比率檢測演算法能有效的減少整周模糊值錯誤確定后整周模糊值二次解算所需要的時間；為了進一步減少整周模糊值解算所需的歷元數目，本文提出把基線長度先驗信息作為觀測量進行卡爾曼濾波輔助整周模糊值求解。Then the periodic properties of geocenter motion in the x, y, z components are summarized. considering the statistical precision of the gps observations, the geometrical distribution of gps stations and their physical stablility, a new method to determine the parameters of geocenter motion is studied and analyzed. in order to have a better understanding of its effect on the height datum origin, the rule of geocenter motion in the horizontal and vertical components are also analyzed and some useful conclusions are drawn
提出了將譜分析與抗差估計相結合的抗差譜分析方法，並用該方法分析了地心運動時間序列的主要周期特性；為合理地確定地心運動參數，詳細研究與分析了一種新的定權方法對求解地心運動參數的作用，該方法充分利用了gps觀測量的統計精度、點位的幾何分佈以及物理穩定性；為了明確地心運動導致的高程基準的變化，分析了地心運動對地面點的水平分量和垂直分量的影響規律。Secondly, based on the existing international technologic analysis, two different measurement schemes are proposed. one navigation scheme uses pixels as measurements vector, and the other one uses line of sight ( los ) of object celestial body and angles from probe to object body as the measurements vector
其次，通過對國際上現有技術的分析，給出兩種不同的導航觀測方案:一是利用圖像作為觀測量的自主導航;二是利用視線方向及夾角作為觀測量的自主導航。Prediction of big ship motion with wave survey
具有艏前波觀測量的大型艦船姿態運動預報Using fractal dimension defining damage variable and building macro and micro - fatigue damage evolution model of structure are suggested in this paper. the variety of damage which is not easy macro - measured to ti alloy tc11 whose material structure is high intensity can reflect fatigue damage process effectively by studying the relation between fracture and structure life
本文研究表明：採用分維數定義損傷變量，建立結構的宏細觀疲勞損傷演化模型，尤其是對于tc11鈦合金這樣的高強度材料結構，損傷量變化不易宏觀測量，可以通過斷口分維數與結構壽命關系的研究，有效地反映疲勞損傷過程。Analysis and objective measurement of video compression artifacts
視頻壓縮損傷分析及客觀測量方法We write the program which used for fighting errors in absolute positioning. we also write the program which used for linear combinating in absolute positioning. from analyzing for the measurement of outer, we can conclude that we can use m estimation to estimate parameter in gps absolute positioning. lt has application value. using it, we can obstain the stable positioning result and remove the outer. in this paper, we calculate the data which from the baseline space of the gps calibration space. we also draw some conclusion using broadcast ephemeredes and smoothing pseudoranges. the positionging precision is in 1 - 2 meter
編制了gps絕對定位中抗差估計程序和應用線性組合進行單點定位的程序。通過對粗差量級的分析，得出在gps觀測量存在粗差時， m估計是有其應用價值的，它使定位結果較為穩定，減弱和剔除了粗差的影響。應用線性組合程序對gps綜合檢定場數據基線網點進行計算，得出用廣播星歷和平滑后的偽距可以給出較好的結果，點位精度在1 ? 2米。The calculation results show that the correlation between the multiplicity of intermediate mass fragments n ( subscript imf ) and total number of charged particles n ( subscript c ) is a sensitive observable for probing the isospin - dependent in - medium nucleon - nucleon cross section, but the isospin effects of symmetric potential on n ( subscript imf ) is not obvious in the chosen energy region
計算結果表明在所選能區，中等質量碎片的多重性與帶電粒子總數之間的關聯是提取介質中核子核子碰撞截面的靈敏觀測量，而此時對稱勢的同位旋效應卻不明顯。The advantage is that it can be used to directly calculate the real physics quantities in an economic way. in this way, we need n ' t perform the analytical continuation from the result in the itf. this new rule has the following property ; the vertex is only related with the coupling constant and independent of the orientation of the momenta, one half of the vertex components vanish
它的優點在於能直接計算與實際物理相關的觀測量，不用象虛時溫度場論中做計算后再作解析延拓，使得計算得到一定的簡化，並具有如下特點：頂角函數只與耦合常數相關，獨立於外線動量方向，而且一半的分量為零。An on - line minimum - variance estimator was developed for thrust acceleration applied to orbit transfer using discrete - time radar measurements. the mass - flow - rate of propellant was selected as a state variant, which was estimated by employing an integral state model and ekf filter. the variation equations for measurement vector to mass - flow - rate have been established to linearize the discrete - time measurement equations. the algorithm has applied successfully to maneuver process in commanding satellite into geo - stationary orbit. the results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process
飛行器軌道機動過程中，為跟蹤、定位機動目標和干預機動控制過程，需要統計處理離散的雷達觀測量實時估計推進發動機的推力，進而確定飛行器的瞬時軌道參數.本文所述演算法是該工程問題的探討和解決方案.文章建立了軌道機動過程中連續變質量運動模型和離散雷達量測模型，推進發動機的質量秒耗量作為表徵推力加速度的一個近似常量，應用擴展卡爾曼濾波對離散的雷達測量數據進行順序統計處理給出秒耗量的最小方差估計;文章詳細地推導了線性化量測模型的變分方程和觀測矩陣;模擬結果表明該演算法能快速、準確地估計推進發動機的質量秒耗量和向機動目標施加的實際推力分享友人