軌道定向 的英文怎麼說

中文拼音 [guǐdàodìngxiàng]
軌道定向 英文
organization of orbit
  • 軌 : Ⅰ名詞1. （路軌;軌道） rail; track 2. （比喻辦法、規矩、秩序等） rut; path; course Ⅱ動詞[書面語] （遵循; 依循） follow
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 軌道 : 1 （供火車、電車等行駛的由條形鋼材鋪成的路線） track; pathway; rail; runway; circle; railway 2 （...
  1. The complex nonlinear pursuit - evasion model of two spacecraft in near - earth coplanar orbit is simplified to linear model, the circular region the radius of which is equal to capture radius is defined as target set, capture is achieved when the evader come into the target set and the game is over ; the boundary of useable part ( bup ) is determined, and the analytical form solution of the linear equations is obtained by backward integration of the state variables from the bup, the linear barrier of the pursuit - evasion model and the optimum thrust of the both sides are thus obtained

    本文將近地共面軌道內運動的兩飛行器非線性追逃模型簡化為線性模型，以捕獲半徑的圓域定為目標集，確定目標集邊界上的可用部分，並以此為各狀態變量的起點，對時間進行倒向積分，求得線性方程組的解析解，從而確定了該追逃模型的線性界柵，以及界柵上對策雙方的最優推力，即求得了滿足最優策略時相對運動的軌跡和推力。
  2. 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。
  3. The research on autonomous navigation and orbital keeping technology of geosynchronous satellites : selecting position vector in the inertia space and longitude, latitude, radial errors in the hill equation as state variables, the precision of orbit determination caused by track dynamic model error, sampling period, and sensor measurement and install error is analyzed

    同步衛星自主導航與軌道保持技術研究：分別選取慣性空間位置矢量和採用hill方程表示的經、緯、向徑誤差作為狀態量，分析軌道動力學模型誤差、采樣周期以及敏感器測量、安裝等誤差對定軌精度的影響。
  4. If measures are correctly carried out, jinzhou heavey machinery co., ltd. wi i i overcome financial difficulties and develop toward satisfatoriness

    如果措施到位，錦州重型股份有限公司定會走出財務困境，走向良性發展的軌道。
  5. The magnetic distribution of a - magnet is presented by analytic way and numeric simulation way. the single particle movement is studied in a - magnet and the movement rule of charged particle in ideal four poles magnetic field also is obtained. quantificational results of the incidence angle, trajectory length and the maximal distance in x direction are presented for ideal trajectory, and the equation indicates some important characters of a - magnet

    論文對-磁鐵的有關物理問題進行了較為詳細的論述，從解析形式和數值模擬兩個方面給出了-磁鐵的磁場分佈，對單個粒子在-磁鐵中的運動進行了分析，利用數值求解方法研究了帶電粒子在理想四極磁場中的運動規律，提出了歸一化運動方程和理想軌道等物理概念，定量給出了消色散的入射角、軌道長度和x方向最大距離的解析表達式。
  6. The market environment decides firms profit capability and survival capability. therefore, each firm must choose strategy cautiously, center on strategy chosen, make certain development direction accurately, occupy the most attractile competitive position, and harmonize works and goals in the process of operation and running in order to guarantee that firms could grow and develop steadily along their own tracks

    企業市場環境決定了企業盈利能力乃至生存能力，因此，每一個公司必須明確選擇戰略，以戰略為核心，正確選擇發展方向占據最具有吸引力的競爭位置，協調在企業經營運轉過程中的各項工作及目標有序完成，保證企業的延著軌道穩定成長與發展。
  7. 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
  8. A potentially feasible method is the use of a chaotic system ' s high sensitivity under condition to detect weak signals, which is quite different from all present methods. fixing parameter of components in a nonlinear circuit, chaotic orbits change with the measured signal. a distance has been defined

    利用混沌系統的初值敏感性進行小信號測量是一個很好的有應用潛力的方向，它的測量原理與現有的測量原理完全不同，其基本思想是將待測信號作為混沌系統的初值，在參數不變的條件下，利用混沌系統的初值敏感性，使混沌軌道隨待測信號的變化而變化，定義軌道距離，通過測量軌道距離的變化即可測得該小信號。
  9. By means of trigonometrical progression method and the mainline track spectrum, the sample function of the chinese mainline railway track random geometric irregularity is simulated. with the data obtained from track geometry inspection car on qinhuangdao - shenyang special line for passenger transport and arma time series model, the sample function of high - speed railway track random geometric irregularity are simulated. based on existing literature, the artificial bogie crawl waves at various different speeds are randomly simulated

    根據我國干線鐵路軌道譜，採用三角級數法模擬出干線鐵路和準高速鐵路軌道不平順的樣本函數；根據秦沈客運專線高速試驗段軌檢車資料，採用arma時間序列模型模擬了高速鐵路軌道不平順隨機樣本函數；在既有研究資料的基礎上模擬出各種速度客車構架人工蛇行波；用隨機變量描述道床橫向剛度，並進行了隨機模擬；將振動理論和穩定理論結合建立系統的分析模型和運動方程；根據monte ? carlo法編制了車輛?軌道耦合系統隨機振動分析程序，進行了無縫線路隨機動力響應分析，通過試驗對計算模型、計算方法進行了驗證。
  10. The different galactic gravitational potential have not clear influence upon the perigalactic distance, eccentricity and uncertainty of orbital parameters, but which is significant for other parameters, such as the apogalactic distance, semi - major axis, radial period and azimuth period and so on ; ( 5 ) the monte carlo simulation show that : the distribution morphologies of the orbital parameters which are produced by simulation data are separated into three types : gaussian profile, semi - gaussian profile and non - gaussian profile

    不同的引力勢模型對近銀心距、偏心率和參數的不確定度等量影響較小，但是對遠銀心距、軌道半長軸、徑向周期和方位周期等參數影響較為明顯。 （ 5 ） montecarlo模擬的結果表明：根據模擬觀測數據得到的軌道參數的分佈形態大致可分為三類：高斯分佈、準高斯分佈和非高斯分佈；觀測數據對軌道參數的影響與樣本的選取、軌道參數的類型等有關。
  11. Abstract : a mechanical model to analyze the dynamic performance of train and transition section between roadbed and railway bridge was established a nd a series of reasonable criterions were put forward too. based on this, the init ial deformation of rails due to different subsidence of roadbed and bridge abutm ent, the effects of the direction and speed of train on the dynamic performance o f wheel / track system were studied. at last, the method to determinate the length o f transition section was suggested

    文摘:建立了列車與路橋過渡段動力特性分析模型，確定了一套軌道過渡段動力特性的評價指標，分析了由基礎沉降差引起的鋼軌初始變形以及行車方向、行車速度對輪軌系統動力性能的影響，提出了確定路橋過渡段長度的方法。
  12. To change the method of the railway track structures " design from deterministic method into reliability method not only is the development trend of the railway ' s technique, but also is the imperative demand of the present railway traffic

    結構可靠度設計是目前國內外結構設計的主要發展方向。實現軌道設計山定值設計向可靠度設計的轉變，不僅符合結構設計和我國鐵路技術發展的大方向，同時也是當前鐵路運輸的迫切需要。
  13. The effect of track stiffness and track damping on high - speed train hopf bifurcation speed is discussed. the difference of the lateral stability between vehicle and train under the same track conditions is given. during the research course, the effect of bogie suspension parameters, track parameters, lateral link stiffness and lateral link damping between cars on train ( vehicle ) hopf bifurcation speed are also educed

    在研究過程中，既研究了車輛系統懸掛參數對列車（車輛） hopf分叉速度的影響，也研究了軌道參數對列車（車輛）系統hopf分又速度的影響，同時還研究了車間橫向連接剛度導和橫向連接阻尼系數對列車系統運動穩定性的影響。
  14. In this paper, the dynamic characteristics associated with the high - speed maglev vehicle and guideway coupling system has been studied. two issues are discussed : one is the asymptotic stability of the system and the other is the coupling vibration characteristic. the basic relation between the control, structure and coupling parameters is studied emphatically to trace the rule of the vibration and to give help for the design of guideway, vehicle structures and controller

    本文選擇高速磁浮列車系統懸浮方向的車軌耦合動力學特性作為研究對象，分析車軌耦合動力學的兩個基本問題:系統漸近穩定性和車軌耦合振動特性，重點研究控制、結構和各種耦合參數與這兩項系統特性的關系，目的在於尋找車軌耦合振動的規律，為軌道、車輛結構和控制器設計提供參考。
  15. In view of the research situation of the technologic and economic evaluation on the constructed program of the pacific road " section in the no : 1 route of wuhan city ' s light rail transit at present, especially the researchment on the trend of the route, the paper discussed detail research of the constructing plans by using various theories of fundamental construction econnmics, etc, based on the the general urban constructing plan of wuhan, etc. the qualitative analysis method and the quantitative analysis method are connected to be applied into this paper for the research work

    本文根據《武漢市城市總體規劃》 （ 1996 - 2020 ） ， 《城市快速軌道交通工程項目建設標準》 ， 《武漢市綜合交通規劃》 （ 1996 - 2020 ）以及運籌學、技術經濟學、投資管理學、基本建設經濟學等原理和相關理論，對武漢輕軌交通一號線太平洋路段這部分關鍵建設線路方案的比選進行了論述及細化研究。本文採用定性分析與定量分析相結合的方法，對軌道線網初始方案進行測試與調整；對多個線路走向的初始方案進行篩選，確定兩個備選方案，再對軌道交通線網優選方案進行綜合比選評價，最終得出軌道交通線網的推薦方案，增強了建設方案的科學性和合理性。
  16. Introduction : basic operation : switching props : t key decisions : the space bar run : shift jump key : ctrl big jump : bond ctr key shift key skills : in no time jumping at the same time ctr key shift key is pressed ahead shift, bond then by ctr bond

    當活力成為年輕的代號，運動便是揮灑青春的最好途徑之一，滑板少年，將使你魅力四射操作指南：在開始進入軌道按住空格鍵，到斑馬線指定區放開空格鍵，使用鍵盤上的四個方向鍵做出不同的超炫動作得分。
  17. We extend this result which is similar to ones of hirsch [ 1l ] and jiang [ 2 ] for 3 - dimensional cooperative system. furthermore, in the paper we discusse the cone of km, and obtain the similar result : theorem b : let f be a continuously differentiable cooperative vector field on d, suppose the following conditions hold : ( a ) d is pm - convex ; ( b ) every forward semi - orbit has compact closure in d ; ( c ) there is not more than one equilibrium p, then there is a unique equilibrium p and it is globally asymptotically stable

    此外，本文還將在k _ m錐下討論此問題，並得到平行的結果：定理b ：設f是d上一個連續可微的合作向量場，假設如下條件成立： （ a ） d是p _ m凸的； （ b ） d中的每一個正半軌道有緊閉包； （ c ）至多有一個平衡點p ，則一定存在唯一的平衡點p ，並且是全局漸近穩定的。
  18. Wellpath design trajectory calculation for directional drilling

    定向井軌道設計與軌跡計算
  19. Within a given time a train travels from one station to the next along level track or non - zero gradient track, it is desirable to find a feasible control strategy that minimizes fuel consumption

    列車沿水平或坡度軌道從一站駛向下一站，要求在給定的時間內完成行程並使得能耗最小。
  20. The idea behind the experiment is simple : put a spinning gyroscope into orbit around the earth, with the spin axis pointed toward some distant star as a fixed reference point

    實驗背後的原理十分簡單：將轉動的回轉儀放在環繞地球的軌道，轉軸指向遠處星體，作為固定基準點。
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