捕獲衛星 的英文怎麼說

中文拼音 [bǔhuòwèixīng]
捕獲衛星 英文
acquired
  • 捕 : 捕名詞（姓氏） a surname
  • 獲 : Ⅰ動詞1. （捉住; 擒住） capture; catch 2. （得到;取得） obtain; win; reap 3. （收割） reap; harvest Ⅱ名詞（姓氏） a surname
  • 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...
  • 捕獲 : 1. （捉到; 逮住） catch; capture; succeed in catching; acquire; arrest; seize 2. （俘獲） trapping
  1. However, the longer length of c / a code, the more hardware resource and power it cost. this dissertation commits research on algorithm of c / a code acquisition in satellite navigation position system, and compares the acquisition means of digital differential matched filter ( ddmf ) with traditional means, and also achieves ddmf with the vhdl language and fpga platform

    擴頻碼的周期的加長會給衛星導航定位系統帶來許多相應的好處，但問題也就隨著之而來了，擴頻碼的周期越長，同步捕獲所需得的時間就越長，而且若用傳統的并行捕獲方法，將極大的耗費硬體資源，而且系統功耗會隨之增大。
  2. To overcome this problem, the author researching from the core of active disturbance rejection control theory " fal function ", having the advantage of : small errors, large gains ; big error, the small gains character, designs a nonlinear pid gesture controller. simulation results showed that the design of nonlinear pid controller shortening the small satellite gesture catch time and improving the attitude control precision

    為了克服這個問題，本文從自抗擾控制理論中的核心「 fal函數」出發，基於fal （ e ， ， ）函數具有:小誤差，大增益;大誤差，小增益的特性，設計了一種非線性pid姿態控制器，比較好的縮短了小衛星姿態捕獲時間，一定程度上提高了姿態控制的精度。
  3. By calculating parameters including the link length, the azimuth angle, the elevation, the optical power that the inter - satellite optical cdma communication system will receive, the variation range of the azimuth angle and the elevation from the optical antenna of atp are understood well. by analyzing the factors to impact bit - error - rate ( ber ) from the received power, multi - user disturbing, background noise, wavelength, bit rate etc, measures to guarantee high performances of the system are obtained, especially those for smoothing the fluctuation of the received optical power from host platform vibration

    分析研究了衛星光cdma通信系統中衛星仰角、方位角和距離，給出了探測器能夠接收到的光功率以及atp子系統捕獲及跟瞄的范圍;對衛星光cdma通信系統性能模型和基於衛星振動系統性能模型的研究，分析了多用戶干擾、接收光功率、背景光噪聲、振動偏差以及碼速率對系統誤碼率的影響，給出了相應的改進措施。
  4. Based on research and experiments, we effectively improved the s - band tt & c transponder for satellite in such dimensions : with sensitivity up to - 92dbm ; dynamic range wider than 55db ; capture bandwidth of the receiver wider than 500khz ; capture time reduced to 22ms

    通過論文工作，成功地改進了川于衛星的s波段測控通信一體機，跟蹤和捕獲接收靈敏度都能達到一92dbm ，動態范圍55db以上，接收機的捕捉帶寬大於500khz ，捕捉時問減小到22ms 。
  5. To begin with, the dissertation introduces the origin of this project, the content and meanings of its research, and discusses the development of acquisition in inland and oversea

    本文研究了衛星導航定位系統以及其用戶機中擴頻碼同步部分中快速捕獲演算法的發展現狀。
  6. Using traditional pd control, the time of small satellite gesture capture is long and control precision is low

    採用傳統pd控制，微小衛星姿態捕獲時間較長，控制精度較低。
  7. The aim of this article is to shorten the gesture capture time and to improve control precision. author from both theoretical and applied researches the using of a nonlinear active disturbance rejection control technologies in small satellite gesture capture system

    本文以縮短主動磁控小衛星姿態捕獲時間，提高控制精度為目標，從理論和應用兩個方面深入研究了非線性自抗擾控制新技術及其在主動磁控小衛星姿態控制系統中的應用。
  8. Using this dynamic model, the influences of the flexible solar - array ' s rotation have been discussed. 2. employing classical control techniques, the satellite earth acquisition has been studied and numerically simulated

    2 、以經典控制理論作為主要工具，研究了衛星捕獲地球的技術，並對衛星捕獲地球的整個過程進行了數值模擬。
  9. The new adrc technique was concluded from the related references in recent years, and the adrc theory was systemically introduced, which included tracking - differentiator ( td ), extended state observer ( eso ), nonlinear pid, nonlinear feedback ( nf ) and active disturbance rejection controller ( adrc ), and etc. the author first designs a pd attitude control system, indicating : using pd attitude control, the time of small satellite gesture capture is long and the precision of control is low

    從近幾年有關文獻中總結了自抗擾控制新技術，系統介紹了自抗擾控制理論，其中包括跟蹤微分器（ td ） 、擴張狀態觀測器（ eso ） 、非線性pid 、非線性反饋（ nf ）和自抗擾控制器（ adrc ）等。設計了主動磁控小衛星pd姿態控制系統。指出採用pd姿態控制，微小衛星姿態捕獲時間較長，姿態控制精度較低。
  10. Tracking receiver is an important partition of data relay satellite capturing and tracking system. its performance affects the quality of space link directly

    跟蹤接收機是數據中繼衛星捕獲跟蹤系統的關鍵部件，它的性能將直接影響鏈路質量。
  11. 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。
  12. To implement the snps acquisition, the new satellite signal frame form, modulation and error control codes are designed

    本文還提出了衛星導航定位信號的快捕獲方案，設計出利於實現長碼快捕獲的衛星信號格式，調制方式和糾錯編碼方案。
  13. The dynamic model of the satellite with a flexible appendage has been studied in this thesis. also, the techniques of the satellite earth acquisition and three - axis attitude stabilization of both the rigid satellite and the liquid - filled satellite have been researched

    本文針對單翼大撓性太陽帆板衛星，建立了撓性衛星動力學模型，在此基礎上，研究了地球捕獲、剛體衛星三軸姿態穩定、充液衛星三軸姿態穩定問題。
  14. Such tdrss system can significantly reduce the use of ground - based monitors as well as increasing medium - low orbit coverage, hence enhance the efficiency of the usage of space along medium - low orbit. “ space target capturing and tracking ” ( stct ) is an important technique in data relay satellite system, and is the preliminary requirement to establish the space link. “ performance of analyzing and simulating on tracking receiver in data relay satellite capturing and tracking system ” plays an important role of stct

    數據中繼衛星系統是為中、低軌道的航天器與航天器之間、航天器與地面站之間提供數據中繼、連續跟蹤與軌道測控服務的系統，使用數據中繼衛星可以大量減少地面測控站的數量，增大對中、低軌道的覆蓋率，有效的利用中、低軌道資源。 「星間目標捕獲與跟蹤」是數據中繼衛星系統的一項關鍵技術，是建立星間鏈路的首要條件。
  15. This thesis presents the acquisition method of synchronization codes and time mark codes under - 20db gaussian channel. then the total step length between initial state and current state can be calculated. basing on the step length, we can deduce the current state of pseudo - random codes, and implement the acquisition of the special pseudo - random codes

    本文設計出時間標記碼在信噪比達- 20dd時的捕獲方案，在此基礎上提出了由偽碼歷經的狀態數，計運算元碼當前狀態的方法，從而獲得了在30秒內完成導航定位衛星信號直接捕獲的方法與實現方案。
  16. And the limitation and tracking precision demands of 2nd generation ctdrss are also analyzed. the course and theory of ctdrss ’ s isl establishing are studied, and the structure of isl a & t system is given

    分析了中繼衛星系統星間鏈路建立的過程和原理，給出了星間鏈路捕獲跟蹤系統的結構。
  17. This dissertation researches a & t technology for 2nd generation ctdrss ( china tracking and date relay satellite system ), and founds a simulation system

    本文深入研究了二代中繼衛星系統的捕獲跟蹤技術，並建立了二代中繼衛星系統捕獲跟蹤模擬系統。
  18. Comparing with the traditional dsss systems, the length of c / a code in beidou project is longer than that of them, which brings us some advantages

    相對于其他通信系統，衛星導航定位系統所採用的粗捕獲擴頻碼（ c / a碼）相對于傳統擴頻系統的擴頻碼的周期較長。
  19. The inter - satellite link ( isl ) establishing is the precondition for tdrs system ’ s operation. acquisition and tracking ( a & t ) technology is one of the key technologies for isl establishing

    星間鏈路的建立是中繼衛星系統運行的前提，星間鏈路捕獲跟蹤技術是星間鏈路建立技術中的關鍵。
  20. Rapid acquisition of doppler shift in satellite communications

    衛星通信中多普勒頻移的快速捕獲
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