目標軌道 的英文怎麼說
中文拼音 [mùbiāoguǐdào]
目標軌道
英文
target orbit- 目 : Ⅰ名詞1 (眼睛) eye 2 (大項中再分的小項) item 3 [生物學] (把同一綱的生物按彼此相似的特徵分為幾...
- 標 : Ⅰ名詞1 [書面語] (樹梢) treetop; the tip of a tree2 (枝節或表面) symptom; outside appearance; ...
- 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) ...
- 目標 : 1. (對象) target; objective 2. (目的) goal; aim; destination
- 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 (...
-
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。Estimating a dynamical trajectory of the reverberation and then taking it out from the observation, all target echoes should be obtained. that is called signal separation
信號分離是指在相空間中估計混響動力學軌道,從觀測中減去估計的混響,從而分離出目標回波。Orbiting satellites were better at spying on enemies than wayward reconnaissance drones, and rockets destroyed targets more reliably than temperamental flying bombs did
按軌道運動的衛星比難以駕馭且以監控為主的無人駕駛飛機更好地偵查敵情,而且相對於我行我素的自動導航導彈而言,用火箭來毀滅目標更具可靠性。In order to increase pointing precision, the error caused by inductosyn and ad2s80a are analyzed as a focus, consequently, high precision inductosyn is used, then current iscompensated and finally the input and output differences are adjusted when
根據衛星軌道姿態,運用球面三角形找出衛星及星下點與目標點之間的關系,建立了指向反射鏡與目標點的角度關系。So combine the item of “ space targets surveillance photoelectricity telescopes arrays system ”, this thesis does research in developing space targets visualization system. the main achievement in this thesis can be summarized as follows : 1. expatiate e the basic theory of satellite track dynamic, analyse the orbit characteristic of two - body problem and launch window, subastral point calculation, visibility and coverage analysis, two - line element sets
本文結合「空間目標監視光電望遠鏡陣系統」課題,進行了空間目標可視化系統的設計和研究,主要作了以下幾方面的工作: 1 、闡述了衛星軌道動力學的基本原理,分析了二體軌道特性和發射窗口的基本特性,星下點軌跡計算、可見性和覆蓋分析和兩行根數。In a word, it presents a comprehensive and systemic analysis on mbo in china and foreign countries, from the followly fire aspects : the background of mba, the policy environment, the objective firms, the pricing methods, the financing system, find out differences of mba and the causes of them, and combinating special eco - nomic environment and economic traces of our country, the author puts forward counterplan. these counterplans primarily include : from strengthening laws, enhancing the information to publish, culturing to agency and etc to come to perfect the mbo policy environment on our country ; defining objective firms of mbo in realm that the state - owned property is decided to withdraw ; with the clean property worth for the foundation, synthesize to consider managers " contribute and the value of control powers with company, and pass the market mechanism to come for right price of the objective firms ; pass growing the organization investor, creative financing tool and optimizing the assistant financial system, establishing the valid withdrawing way of financing etc to resolve the financing problem
在此基礎上,論文從收購背景、政策環境、目標企業、定價方法、融資體制等五個方面對中外mbo做了全面系統的對比分析,找出了兩者的差異及原因,並結合我國特有的經濟環境和經濟軌跡,提出了相應的對策措施。這些對策主要包括:從健全法律法規、加強信息披露、培育中介機構等方面來完善我國mbo的政策環境;在國有資產決定退出的領域內對mbo的目標企業進行界定;以凈資產值為基礎,綜合考慮管理層貢獻和公司控制權兩個因素,通過市場機制來為目標公司正確定價;通過培育機構投資者、創新融資工具和優化配套金融制度、建立有效的融資的撤出渠道等來解決融資問題。Both clocks aim to measure with 99. 99997 percent accuracy how much the microgravity of low - earth orbit slows time compared with measurements made on the ground
這兩座鐘的目標都是要以99 . 99997 %的精確度,去測量低軌道所受的微重力(較之於地球表面)會使時間變慢多少。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。The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering
本文從星載雷達的星地幾何關系入手,舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型,研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法,並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體,完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析,最後完成雷達回波信號的模擬。The basis of dynamics and simulation includes the iterative flyout angle algorithm to the solutions to lambert problem and battin ' s universal conic section state extrapolate method. then spacecraft ' s orbit roots, maneuver impulse and maneuver time are discussed as the following four part : first of all, the chaser ' s one orbit roots is selected as a variable to simulate its influence to the large scale orbital maneuver. the research reveals fact that the orbit roots both of chaser and target should be close to each other to achieve better maneuver and rendezvous " ability, moreover, the best orbit maneuver and rendezvous occurs when both chaser and target ' s initial phase angle are equal
為了研究了交會機動中追蹤器和目標器的軌道根數、機動時限和機動能耗等因素對交會機動的影響,模擬和分析分為以下四個部分:首先,研究了追蹤器軌道單個參數為變量情況下兩航天器大范圍交會機動問題,研究表明,追蹤器的變化參量與目標器相應的參量在接近的情況下可以獲得良好的交會機動特性,而對于兩航天器軌道共面的情況下,初始相位角相等時則獲得最佳的機動效果。Then, the chaser ' s two orbit roots are selected as variable and visualizing the simulation by contour plot. this part of research draws the conclusion the same as the first part when the target ' s orbit is circular orbit, while the selected two variable can be wildly changed if the target ' s orbit is elliptical orbit. next, wait time before orbit maneuver is simulated
其次,利用可視化的等值線圖研究了追蹤器軌道兩個參數為變量的情況下大范圍軌道機動問題,分析表明對圓軌道目標器交會機動時,追蹤器軌道根數不宜與目標器軌道根數相差過大,而對橢圓軌道目標器交會機動時,追蹤器軌道根數可選范圍較大,機動策略和方法富於彈性。First, proper initial conditions between ekv and target are the premise of hit - to - kill. capture region is described by equations of relative motion defined in modified polar coordinate while phasetrajectory graph is introduced. and the disturbance of initial condition biase is analyzed by cadet through statistical linearization of ekv dynamical model
本文在修正極點坐標系中建立攔截器和目標之間的相對運動方程,結合相平面軌跡圖,分析了大氣層外動能攔截器的攔截區;對大氣層外動能攔截器動力學模型進行統計線性化,採用協方差分析描述函數法,分析了初始狀態誤差對彈道的影響。The thesis analyzed the present transferring status between pudong airport and shanghai " s incity. through forecasting the long - dated flux of pudong airport and the area near it and combining the planning scheme of shanghai urban rapid mass transit, the thesis learned the helpful experience of the traffic organization in typical airport abroad and used the scientific analyzing model of public traffic flux forecasting to put forward some reasonable suggestion of the bottleneck question between pudong airport and incity : the one is to use the present no. 2 subway as the future airtrain to take on the most part of the flux and meantime present the concept of feeder efficiency to quantitative analyze the choice of feeder station ; the other is to set up cat ( city air terminal ) to convenient the passenger to come airport rapidly and economically in order to lessen the pressure of the traffic and improve the whole service quantity of civil aviation transportation
本文分析了浦東機場與市內目前的換乘現狀,從預測浦東機場及緊鄰空港區域中遠期的客流量入手,結合上海市政府快速軌道交通的規劃方案,並且學習境外典型機場交通組織的有益經驗,利用規劃中的公交客流預測等科學分析模型,對浦東機場與市中心的軌道交通銜接提出了合理的建議:一是利用目前的地鐵二號線作為航空軌道共享線來承擔大部分進出空港的客流,並且給出了以接運效率最大化為目標函數的接運公交軌道站點比選模型;二是在市中心設立城市航站樓以方便旅客快速、經濟地到達機場,從而減少道路交通壓力,提高航空運輸的整體服務質量。Neither would it prevent cruise missiles or bombers, whose flights are within the earth ' s atmosphere, from hitting their targets
譯文:它也不能防止軌道在地球大氣層以內的洲際導彈和轟炸機命中目標。Due to its flexibility, the lrt system can be designed to match both the physical environment and transport demands as well as to provide an alternative choice with quality service. all these factors have contributed to the phasing - out of the old streetcar systems. beginning in the mid - 1970s, light rail transit systems have enjoyed a period of sustained growth, not only providing public transportation but also contributing to the renewal of declining city districts, reutilizing unused rail lines, and providing impetus to local economic development
使得有軌電車自1970年代中期,以輕軌運輸的新風貌漸漸復興,不僅擔負公共運輸功能,更常結合老市區都市更新、舊鐵道再利用、促進經濟再發展的聯合開發計畫,吸引民間投資參與建設,透過由街道面進出的低月臺車站、無欄柵式收費制度、造型流線超低底盤車輛、軌道沿線綠化設施等設計,在都市環境改善與都市永續經營上,充分發揮凈化、綠化、人性化、地標化等效益,發展至今估計全世界輕軌運輸系統路網數目已達約400個左右。By means of the orbit dynamics theory and other knowledge, author established mathematical model related to collision forecast, including space object orbit confirming model, space objects relative movement model, dangerous object distinguishing model and space object collision geometry relation model, etc. according to the mathematic model, author calculated the relative distance transformation rule along with time between the spacecraft and dangerous debris and established early warning rule
依據航天動力學理論和其他知識,建立了碰撞預警相關的數學模型,包括空間目標軌道確定數學模型、空間物體相對運動數學模型、危險物體判定準則數學模型和空間物體碰撞幾何關系數學模型等,根據數學模型計算航天器和危險目標的相對距離隨時間變化規律,設定了預警規則。The target in orbit was heading south, so the intercept involved an extremely high - velocity, nearly head - on collision, sources said
軌道上的目標正向南飛行,因此導致攔截完全是高速的、幾乎迎頭相撞的。In this case, we should transform shareholding system, set up new supervision & management frame at the requests of market economy, and establish just and transparent legal system to make the banking of our country step into a standard and healthy o rbit as soon as possible and develop into the large modernized business banks with perfect management structure, sound operating mechanism, clear operating objectives, good financial situation and strong international competitive power
在這種情況下,必然要求對國有商業銀行進行股份制改造,按照市場經濟的要求,建立新的監管規劃框架,建立公正、透明的法律體系,使我國銀行業盡快步入規范、健康發展的軌道,逐步發展成為治理結構完善,運行機制健全,經營目標明確,財務狀況良好,具有較強國際競爭力的大型現代化商業銀行。By reviewing the cases of environment impact value of urban rail transit in china in recent years, and based on the analysis and summary of environment impact value ( eiv ) results and practical effects, some problems in environment impact value ( eiv ) are discussed comprehensively, among which arc the choice of environment protection targets, the accuracy of source strength analogy, forecasting methods of noise and vibration and the principles of control measure
摘要通過對近年來國內城市軌道交通環境影響評價實例的回顧,在對環境評價結果與實際效果進行分析和總結的基礎上,對環境影響評價中的若干問題進行綜合探討,包括環境保護目標的選擇、源強類比的準確性、噪聲與振動預測方法及採取控制措施的原則等。After work above is finished, with regard to object trajectory prediction, we research on satellite orbit algorithm mainly in the dissertation
在上述工作的基礎上,目標軌跡預測技術重點研究了衛星軌道遞推演算法。分享友人