重型衛星 的英文怎麼說

中文拼音 [zhòngxíngwèixīng]
重型衛星 英文
heavy satellite
  • 重 : 重Ⅰ名詞（重量; 分量） weight Ⅱ動詞（重視） lay [place put] stress on; place value upon; attach im...
  • 衛 : Ⅰ動詞（保衛） defend; guard; protect Ⅱ名詞1 （周朝國名） wei a state in the zhou dynasty2 （姓氏...
  • 星 : 名詞1 （夜晚天空中閃爍發光的天體） star 2 [天文學] （宇宙間能發射光或反射光的天體） heavenly body...
  • 重型 : heavy （duty）; heavy type重型車輛 heavy vehicle; 重型航空母艦 heavy aircraft; battle aircraft; ...
  1. 2 ） this paper research mainly the influence of the cluster satellite circumnavigation 、 earth - rotation 、 satellite attitude to the baseline variation and the speed measurement accuracy, and give the correcting mathematical formula and the relative curvature

    2 ） 、著重分析分散式衛星sar系統中衛星環繞、地球自轉、衛星姿態對基線、測速精度的影響，並繪出了相應的數學模型及關系曲線。
  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 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。
  4. Meanwhile, data from hipparcos satellite shown that the globular cluster might be much further away from us. added to that, a review of theoretical model on globular cluster also prompted astronomers to believe that the globular cluster was not as old as previously estimated

    同時從依巴谷衛星得出的資料顯示，球狀星團的距離可能更遠一些，加上重新檢視球狀星團的理論模型，天文學家相信球狀星團的年並不是最初估計的年老。
  5. It contributes to the deeper comprehesion of these probability distributions, affords more detailed theoretical basis for further studying and simulating satellite mobile channels, ? theoretical analyses and discussions of the models which are often used in the study of the propagating characteristics of satallite mobile channels are given ; meantime, some discussions on the work of model simulations are also given, ? incorrect derivation of the equality between c. loo model and corazza model in some other papers is pointed out. via the conception of received power, we derivate that in the rural environments these two models really have the equal relationship by the way of theoretical derivation and simulatant fittings. therefore, it is able to use corazza model in studying the characteristics of satellite mobile channels in the rural environments and able to avoid the iterant work of modeling, in order to enhance the efficiency and accuracy of research work, ? detailed processes of simulating lutz model by using matlab6. 0 _ simulink4. 0 and the results of comparisions are given

    本文包含有以下的主要內容： ?對衛星移動通信通道傳播特性研究中常用的三個概率分佈給出了詳細的推導過程；以便對這幾個在衛星移動通信通道傳播特性的研究中常用的概率分佈函數有更深的理解，對進一步研究衛星移動通信通道傳播特性和對通道的建模提供了更為詳盡的理論基礎； ?對衛星移動通信通道傳播特性的研究中常用的通道模型進行了理論上的分析和討論，並對衛星移動通信通道建模的研究工作提出了一定的看法； ?指出了以前的文獻中關于c . loo模型和corazza模型的等同性的證明錯誤；並從接收信號功率的角度出發，通過理論推導及模擬曲線擬合重新證明了在鄉村環境下，這兩個模型的確是具有等同性的；從而在對鄉村環境下的衛星移動通信通道傳播特性進行研究時，可以只採用corazza模型來對實際的通道進行建模，這樣可以避免重復的建模工作並提高研究工作的效率和準確性； ?給出了lutz模型在matlab6 . 0 _ simulink4 . 0環境下的軟體模擬實現的詳細過程和整體模擬測試的對比結果，保證了該模型在硬體實現時的可靠性和可行性，從而可以將它們應用於指導模型的硬體模擬實現並可以降低硬體實現時的風險。
  6. The characteristics of the normal equation created in recovering the earth gravity model ( egm ) by least - squares ( ls ) adjustment from the in - situ disturbing potential has been discussed in detail

    摘要討論了在基於能量法確定地球重力場模型的過程中，利用最小二乘方法由沿軌擾動位數據解算位系數時法方程的特性，在該問題中，法方程只與衛星軌道有關。
  7. To establish a series of science and technology satellites to enhance researches on microgravity, material science, life science, space environment and astronomy

    建立新型的科學探測與技術試驗衛星系列，加強微重力材料科學生命科學空間環境和天文研究。
  8. Using satellites, data from buoys and computer models to study the earth ' s oceans, scientists have concluded that more energy is being absorbed from the sun than is emitted back to space, throwing the earth ' s energy " out of balance " and warming the planet

    通過利用人造衛星、浮標數據和電腦模型研究地球上的各個海洋，科學家日前得出結論認為，來自太陽的能量更多地被吸收了，而不是重新散發到空中，這使地球上的能源面臨失衡的危險，同時也使全球溫度變暖。
  9. From the characteristic of district gravity, the characteristic of remote sension. we can see that ore area develops south - north consotium rift. it not only controls the eastern edge of zhenxun basin, but also controls the form of bed

    礦床類型以沉積、沉積?改造型為主。根據區域重力特徵、衛星影象和其他地質特徵，礦區所在部位，發育南北向的同生斷裂。
  10. The principle of how to supply energy for system has also been studied. secondly, the orbiting satellites are affected by several perturbations. we put the main emphasis on the influence of the perturbations of the atmosphere drag and the earth ’ s eccentricity on the six orbital factors and the simulation ’ s accuracy

    其次，衛星在軌運行時將受到各種干擾力的影響，因此在研究精確地磁場模型電動力纜繩離軌系統的動力學特性的基礎上，著重研究了大氣阻力攝動和地球非球形攝動對衛星離軌過程中各軌道參數的影響。
  11. In the rigorous aerospace circumstance, it has been and will always be aerospace pursuance to design and produce satellite embedded computers with longevity, high reliability, miniaturization and low cost features, and the reliability is the key factor

    作為衛星的核心系統之一，星載嵌入式計算機的要求越來越高。在苛刻的空間條件下，設計製造高性能、小型化和低成本的星載嵌入式計算機，其可靠性問題已經成為發展長壽命衛星的重大阻礙。
  12. Of course, the next big step for chinese space astronomy would be to deploy a satellite dedicated only for astronomical research. there are currently a few projects in the planning stage, including a hard x - ray all - sky survey satellite the hard x - ray modulation telescope mission, and a " microsatellite " weight less than 100 kg mission to study long - term variability of stars and galaxies space - based multi - band variable objects monitor

    當然，下一步首先應是發射專門用作天文研究的衛星，目前有幾個計劃正處于策劃階段，包括建造一枚作硬x射線巡天觀測的衛星硬x射線調制望遠鏡， hxmt和一枚微型衛星重量不逾100公斤，來研究恆星和星系的長期變化空間變源監視器， svom 。
  13. The main work done in the paper is as follows : 1. satellite attitude dynamics modeling study : for the earth - oriented three - axis stabilized satellite, a precise attitude dynamics model is established, considering the influence of the environmental disturbance, such as the gravity, the sun radiation, the earth magnetic field and the atmospheric resistance

    本文的主要研究工作如下： （ 1 ）衛星姿態動力學建模研究：針對對地定向三軸穩定衛星，考慮了重力梯度、太陽輻射、大氣阻力、地球磁場等環境因素對衛星的影響，建立了較精確的衛星姿態動力學模型，同時又建立了四元素描述的姿態運動學方程。
  14. Nevertheless, there is no direct evidence for intermediate - mass black holes and it will be very difficult to establish them in the same way that we have for supermassive black holes, at the centre of galaxies, or stellar black holes

    畫家筆下的xmm -牛頓衛星鳴謝： esa可惜的是，一些用來印證星系中心超重黑洞或恆星型黑洞存在的方法，很難套用於中型黑洞上。
  15. According to the character of ballistic missile in boost phase, the gravity turn model is established, and according to the position relationship between early warning satellite and the target, the measure model is established

    根據彈道導彈主動段運動的特點，建立了主動段運動重力轉彎模型。根據預警衛星與目標的位置關系，建立了觀測模型。
  16. First, the structure of the second generation ctdrs isl was discussed in this paper, the characteristic of coverage in the second generation ctdrs by the characteristic of orbit and the simulation model of isl was analyzed then the effect of the isl establishing process analyzed. second, the discussing and analyzing focus on the characteristic of signal during the establishing isl process, establishing the orbit model, the technology of doppler frequency shift capturing and tracking sequence and the effect of background noise, then the theory analyzing the parameters we have just mentioned, and this will support the reference for the implement of project. the simulation and test of the isl of ctdrs and analyzing from theoretical basis to implement of simulation were mainly focused in this paper

    其中討論了二代中繼星捕獲跟蹤系統星間鏈路的模擬方案的組成結構，利用軌道特性對二代中繼衛星系統的覆蓋特性進行分析，搭建了星間鏈路的模擬模型，其中包括中繼衛星和用戶衛星在內的軌道模型、星間鏈路模型、用戶星信號調制模型等，並對星間鏈路建立過程的影響進行分析;重點針對星間鏈路建立過程的信號特性，軌道模塊的建立、多普勒頻移技術、背景噪聲影響、載波的捕獲與跟蹤技術等進行了實際參數的設計與理論分析。
  17. Precision transmission device is one kind of the key fundamental components, which are extensively applied to many industry fields including robot industry, machine industry, instrument industry etc. with the development of information technology and space navigation technology, especially the micro - miniaturization, speediness and automation of satellite communication, scouting the flying project, remote sensing and measuring and astronomic observation antenna system, more hard requirements are demanded on precision transmission

    精密傳動是一種重要的基礎性零部件，在機器人、機床、儀器儀表等工業領域有著廣泛的應用。隨著信息和宇航科學技術的發展，特別是衛星通信、飛行目標跟蹤與攔截、遙感與遙測、天文觀察等天線系統的微小型化、快速化及自動化，對精密傳動提出了更高的要求。
  18. With the micromation development of the satellite, the requirements are stricter, especially on bulk, weight and power of every function module

    隨著衛星微型化的發展，對各個功能系統尤其在體積重量和功耗方面提出了嚴格限制。
  19. This paper introduces the application for digital landslide technique through 4 examples ： three dimensional landslide models for jinlong mountain ； satellite monitoring yigong landslide ； study for landslides in key towns of the three gorges ； qianjiangpin landslide

    通過金龍山三維數字模型，衛星監測易貢滑坡、三峽庫區重點城鎮滑坡及千將坪滑坡等地的遙感調查說明數字滑坡技術的實際應用。
  20. Shortly after 6 a. m., when the plane reached 39, 000 feet, a compact pegasus rocket dropped from the aircraft ' s belly fired its engine and ferried the satellites on a 10 - minute climb into space. the launch was broadcast live on nasa ' s tv station

    當日早晨6點剛過，美國洛克希德公司生產的l - 1011型噴氣飛機載著每顆僅重55磅約25公斤的st5微型衛星，從位於加利福尼亞州的范登堡空軍基地起飛。
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