軌道預測 的英文怎麼說
中文拼音 [guǐdàoyùcè]
軌道預測
英文
orbital prediction- 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) ...
- 預 : Ⅰ副詞(預先; 事先) in advance; beforehand Ⅱ動詞(參與) take part in
- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 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 (...
- 預測 : calculate; forecast; prognosis; divine; forecasting; foreshadowing; predetermination
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Dynamic model of satellite is built up with astronomic method, and a short - arch forecast arithmetic of satellite orbit in short arch with single site is given, which is of high precision when only angle data is available
本文使用了天文方法建立了人造衛星運動的數學模型,給出了一種只使用單站短弧段測角數據對人造衛星軌道進行高精度預測的演算法。In order to verify the prediction efficiency, 27 interplanetary shock events from january 1979 to june 1982 and 68 interplanetary shock events from february 1997 to january 2000 are used for testing. comparing the results of our disturbance model to those obtained by stoa and ispm, we find that our disturbance model is as good as the other two models, and in some cases even better
為印證擾動傳播模型的適用性,利用79年到82年間的27個激波事件,以及97年2月到2000年1月間的68個激波事件,對激波到達地球軌道附近的傳播時間進行了預測,並將結果與目前流行的行星際激波事件到達地球軌道時間的stoa和ispm預報模型所得結果進行了比較。Interference to csrh and forecast from synchronous orbit satellite, and interference due to low and middle orbit satellite are analysed
計算了同步衛星干擾及干擾時間預測,也分析了中低軌道衛星干擾問題。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。The mentally dense sequence have a series of the characteristic inscrutability that is the good and false random, orbital inscrutability and the sensitivity of the early value. etc. so it is very keeping with in digital signature application
混沌序列由於具有良好的偽隨機性、軌道的不可預測性、對初值的敏感性等一系列特性,因此它非常適合在數字簽名中的應用。In this paper, detecting and surveillance process of ballistic missile with low satellite of sbirs is studied deeply
本文以天基紅外系統中的低軌道衛星為觀測平臺,針對低軌預警衛星對彈道導彈的跟蹤及彈道估計演算法展開深入研究。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。One third of all u. s. spacecraft sent to mars since the 1960s have failed to enter orbit, but the mars reconnaissance orbiter is not among them
從60年代起發往火星的衛星有三分之一未能進入預定軌道,但這次火星探測衛星已經逃過此劫。Development forecast model of track irregularity based on probability distribution
基於概率分佈的軌道不平順發展統計預測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The results show that the wayside noise increases 8db - 12db, if the train ' s velocity increase two times ; and increases 3 db, if the number of axles increase tow times ; and decreases 3db, if the distance far away from the track increase tow times damping loss factor increases, the wayside noise decreases ; coupling loss factor increase, the wayside noise increase
預測結果表明:列車通過時,在其他條件不變的情況下,列車速度增加一倍,輪軌輻射噪聲大約增加8db 12db ;列車軸數增加一倍,輪軌輻射噪聲大約增加3db ;預測點距軌道距離增加一倍,輪軌輻射噪聲大約降低3db 。The pentagon ' s defense threat reduction agency ( dtra ) attempted to predict the results of various hypothetical scenarios involving the use of hanes against leo satellites in 2001
美國五角大廈的防恐怖威脅署( dtra )於2001年嘗試預測高空核爆影響低軌道衛星所造成的各種假設狀況,結果相當令人震驚。The simulation program has been implemented to simulate the procedure of hxmt detecting x - ray source. the simulation result has been used to analyze the overlay region in celestial sphere, the variation of photon current intensity and the variation of the angle between sun and orbit, which demonstrate the reason why to select a 550 km height and 43o inclination low earth orbit as hxmt ' s orbit
利用模擬程序,實現了模擬一個正在預研的天文衛星? ?硬x射線調制望遠鏡hxmt觀測x射線源的過程,分析了天球覆蓋、 hxmt接收的光子流強度的變化和太陽軌道面夾角的變化,說明了選取高度為550km ,傾角43o的近地圓軌道作為hxmt的運行軌道是合理的選擇。This conception destroy the deterministic image of classical physics and shows that the trajectories of deterministic equations of motion are in a sense random and unpredictable
而經典混沌的概念打破了經典物理學中的確定性圖像,指出運動的確定性方程給出的相空間的軌道也可能是隨機的,不可預測的。( 1 ) the cfd model for the pulse combustion spray drying process. the computational fluid dynamics ( cfd ) based on the two - phase flow theory was employed in this paper, which used the standard k - e model and the particle trajectory model to simulate the gas - particle flow in the drying chamber. the momentum, heat and mass transfer regarding both gaseous and particulate phases during the spray drying inside the drying chamber was also revealed
為解決這一難題,本文利用氣體一顆粒兩相流理論和計算流體力學( cfd )技術,建立了更符合實際噴霧乾燥過程的數學模型即噴霧乾燥的cfd模型,並進行了脈動燃燒噴霧乾燥過程模擬,其主要內容如下: ( 1 )建立了脈動燃燒噴霧乾燥的cfd模型該數學模型建立在氣體一顆粒兩相流基礎之上,用標準k -模型預測乾燥室內的氣體湍流運動過程,顆粒軌道模型追蹤乾燥室內顆粒群的運動軌跡,熱質傳遞模型描述空氣和液滴的熱質傳遞過程。Comparisons between reference - trajectory and predictor - corrector entry guidances for rlvs
再入標準軌道制導與軌道預測制導方法比較分析Using the time dependent finite element method of age - adjusted effective modulus, the author calculates the deflection which is induced by shrinkage and creep in a continuous rigid frame bridge of urban rail transit, and further compares with the site test result, the conclusion is very meaningful
摘要採用按齡期調整有效模量的時變分析有限元法,對城市軌道交通預應力混凝土連續剛構橋的收縮徐變變形進行了理論計算,並與實測結果進行了對比分析,結果表明理論計算是可信的。Concepts of pollution overall reduction pattern and green taxes are explained in details and expatiations on pollution preventing measures of the city are also included. 5. quantitative analysis with mathematical tools such as combined prediction, input - output analysis, sensitive analysis and multiple objective planning are used to optimize the energy system of the city
( 5 )利用組合預測、投入產出、多目標規劃等多種方法,對石家莊市未來能源發展戰略進行定量分析,描繪出該地區能源發展的最優軌道,並就理論上分析了能源規劃的動態性和風險性。Then the effects of the two vibration mitigation measures were compared, and the result is satisfying. so this vibration analysis of lightway can provide foundation for the feasibility study and construction design of lightway engineering. simultaneously it also can offer guidance to take reduced vibration measure along the constructed lightway which have produced excessive influence on the surrounding environment
因此,對輕軌的振動分析同樣可以服務于輕軌工程的可行性研究、設計、施工以及為政府的決策部門提供依據,同時還可以對給周圍環境產生較大影響的已建軌道工程沿線採取減振措施進行指導,並對減振效果進行預測。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