軌道導航 的英文怎麼說

中文拼音 [guǐdàodǎoháng]
軌道導航 英文
orbital navigation
  • 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） ...
  • 導 : 動詞1. （引導） lead; guide 2. （傳導） transmit; conduct 3. （開導） instruct; teach; give guidance to
  • 航 : Ⅰ名詞（船） boat; shipⅡ動詞（航行） navigate （by water or air）; sail
  • 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. In the stage of the sun and the moon in sight, azimuth of the sun, the earth and the moon in the spacecraft body coordinate system is simulated. combining the simulated azimuth with the ephemeris of the sun and the moon, the state equation and observation equation are modeled. the initial orbital parameters calculated by least square method are used in orbit state equation to predict spacecraft state and to realize autonomous navigation

    在日月可見階段，模擬日、地、月敏感器測量信息，即日、地、月在航天器本體坐標系下的方位信息，結合日月星歷，建立狀態方程及觀測方程，通過最小二乘法得到歷元時刻的軌道狀態初始值，將其代入軌道狀態方程進行自主導航。
  2. 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。
  3. Low earth - orbit satellites have become indispensable for u. s. military communications, gps navigation for smart bombs and troops, and for real - time surveillance. the chinese test highlights the satellites vulnerability

    低地球軌道衛星對美國軍事通訊、精確炸彈和士兵的gps導航及制導和實時偵察至關重要。中國這次試驗凸現了衛星的脆弱性。
  4. 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。
  5. 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。
  6. This thesis, taking geosynchronous satellite as an example, studies systematically and thoroughly the multi - sensor information fusion technology, studies fault diagnosis and system rebuild technology in satellite attitude control system, and studies autonomous navigation, orbital keeping technology

    本文以地球同步軌道衛星為研究對象，從理論上和工程上較系統和全面地研究了衛星姿態控制系統的多敏感器信息融合技術、故障診斷與系統重構技術、自主導航技術、軌道保持技術。
  7. The unscented kalman filter is used to estimate the probe position, velocity and un - model acceleration, which improves the orbit estimation accuracy and ensures the stability of navigation algorithm

    數學模擬結果表明，提出的導航方法是可行的，能夠滿足月球探測器奔月與繞月軌道段導航精度的要求。
  8. Site experiment were carried out on the testing vehicle for ahs and the magnetic markers road in national intelligent transport system center. also, study on multi - sensor information fusion and control model by using neural net system, fuzzy logic and genetic algorithm were carried out. the work completed are as follows mainly : ( 1 ) hardware system for lane keeping system including magnetic marker, magnetic sensor, control system and executor machine were designed

    本文以國家智能運輸系統研究中心的自動公路系統試驗車和專用的磁軌釘道路為工作平臺，在大量的現場實驗基礎上，針對基於磁軌釘導航的車輛車道保持技術中的若干問題展開研究，運用神經網路、模糊邏輯、遺傳演算法等方法在多傳感器信息融合、控制模型等方面進行了系統的研究，主要完成了以下幾方面的工作： （ 1 ）對車道保持系統硬體平臺進行了設計，論述了導航設施? ?磁軌釘的設計過程和車載工控機、步進電機等的選擇。
  9. Applications to aerospace engineering are discussed, including introductory topics in orbital mechanics, flight dynamics, inertial navigation and attitude dynamics

    亦將討論動力學在航太工程上的應用，包含軌道力學，飛行力學，慣性導航與姿態動力學。
  10. When navigation accuracy is highly expected, the sensor with higher accuracy should be chosen and the observation time should be longer, especially in high - altitude orbit

    當對導航精度要求較高時，軌道越高，尤其在高軌道類型中，應盡可能的選擇精度高的敏感器以及盡量長的觀測時間。
  11. Inflatable space station prototype ' s launch the las vegas, nev. - based firm bigelow aerospace launched back into the headlines in june 28, when a converted ballistic missile launched the inflatable space station prototype genesis 2 into orbit

    充氣式空間站原型發射6月28日，總部設在內華達州拉斯維加斯的本傑羅宇航公司，利用改裝的導彈將一個充氣式空間站模型「起源- 2 」號送入軌道的消息成為新聞焦點。
  12. According to comparison between the calculated results, conclusions are summarized as follows : the accuracy of sensors and length of the observation time have great influence to the navigation precision in different orbit types

    對高、中、低三種軌道類型，分別進行計算，通過對比可以看出，敏感器精度、觀測時間長短對不同的軌道類型導航精度影響很大。
  13. Different sampling periods of sensors and the recursive steps of initial states are investigated. the navigation precision with different condition such as different precision of sensors, different length of observation time are compared. then, three orbit types, consisting of low - altitude orbit, middle - altitude orbit and high - altitude orbit, are simulated respectively

    在pc機上首先分析敏感器采樣周期和濾波迭代次數對自主導航精度的影響，然後比較敏感器精度不同，觀測時間長短不同，軌道類型不同情況下所產生的導航誤差。
  14. Though the hill equation was improved it cannot satisfied with the long distance navigation. here is considering the main satellite the following satellite and the target satellite format a triangle in the space which was useful in the relative navigation. the orbit of the following satellite was resolved by calculate the hill equation

    盡管如此改進的hill方程依然不能滿足遠距離的相對導航，當從星在攔截目標星時，若目標星在攔截過程中發生軌道機動遠離主星，這里考慮到在已知從星軌道的前提下利用主從星以及目標星在空間形成的三角關系這一有利條件進行幾何法定位的研究，並通過數學模擬對其誤差大小進行了分析。
  15. For the lunar landing phase mission, this paper presents autonomous navigation scheme based on feature points ( fps ) tracking

    針對著陸軌道段任務，給出了一種基於特徵點跟蹤的自主導航方法。
  16. With earth - moon transfer trajectory taken into account, this paper gives the deep space autonomous optical navigation algorithm based on the information of earth - moon

    論文的主要研究內容包括:針對奔月軌道段任務，給出了基於地月信息的自主光學導航方法。
  17. The algorithm of strapdown inertial navigation system is also discussed and then use the flight - track generator to give a simulation, since a closed loop feedback integrated navigation system is designed in this paper, and the output of the filter must feed back to the strapdown inertial navigation system, the analysis of the algorithm in strapdown inertial navigation system is important. the scheme to design the trajectory of gps and the simulation of gps constellation are then studied, the simulation of gps constellation is given from the calculation of vernal equinox base on the principle of celestial mechanics, this method of different from other methods given by other paper and is useful to the research of satellite navigation system. a new method to abstract noise modal in integrated navigation system is proved to be useful in practice, this method, which is given by use the principles of stochastic processes, statistics, time series analysis, and system identification, is suitable for the kalman filter in integrated navigation system

    如航跡產生器的設計，該航跡產生器是研究組合導航問題的前提，從國外一些研究組合導航系統的文獻中可以看出，設計這樣一個航跡產生器是非常必要的，所以本文自行設計了這樣一個系統；還討論了捷聯慣性導航系統中捷聯解算的方法，並進行了模擬研究，由於在本文設計的閉環反饋式組合導航系統中，對捷聯慣導系統的平臺誤差進行閉環控制，需要將濾波器輸出的校正量反饋到捷聯解算內部，所以必須對捷聯解算進行深入的研究和分析，更何況捷聯解算問題本身也是導航界的一個熱門研究課題；另外，本文還介紹了gps軌道及其星座模擬的設計思想和方案，與以往gps軌道和星座模擬不同的是本文從天體力學中計算春分點開始，逐步進行gps軌道及其星座模擬，這樣的設計方法對從事衛星導航的研究工作是有價值的；還對組合導航中誤差建模方法進行了研究，綜合運用隨機過程、概率統計、時序分析及系統辯識等方面的理論提出了一套適合組合導航卡爾曼濾波的誤差建模方法，並運用實際研究工作中的測量數據對該方法進行了驗證。
  18. In deep space exploration missions, autonomous navigation technology is very important, and in this paper, we do some research into the autonomous navigation schemes of encountering small celestial bodies. it is mainly described as the follows : firstly, by analyzing the orbit characteristics and task requirements in encounter, the simplified orbit dynamic model for the deep space probe is built up, and whether the corresponding model error that meets the demanding of autonomous navigation task is validated

    在深空探測任務中，自主導航技術是十分重要的，本文對交會小行星的自主導航方法進行研究，主要內容包括:首先，分析交會小行星的軌道特性及任務需求，建立簡化的深空探測器軌道動力學模型，並驗證了簡化模型的誤差能否滿足自主導航任務的需求。
  19. Selecting the image elements of earth and moon centers as observed quantity, measurement noise model and observed equations of autonomous navigation system are built up. the spacecraft orbit is determined by using the recursive weighted least square based on ud factorization

    在奔選取地心和月心像素作為觀測量，建立了符合實際情況的量測噪聲模型和自主導航系統的觀測方程，並利用基於ud分解的遞推加權最小二乘演算法估計了奔月探測器的軌道參數。
  20. Increased radiation from the sun and occurrence of geomagnetic storms i. e. severe distortion of geomagnetic field of the earth may cause disturbances such as increases in density in the earth s upper atmosphere. these result in a greater drag on the movement of satellites and spacecraft, causing a slow - down or even a change in orbit

    輻射的增加及地磁暴即地球磁場急速變形的出現，會導致地球上層大氣的擾動，例如空氣密度的上升，從而使衛星和太空船在航行時受到的阻力大增，航行速度因而減慢，甚至軌道亦會改變。
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