波束方向 的英文怎麼說

中文拼音 [bōshùfāngxiàng]
波束方向 英文
beam direction
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 束 : Ⅰ動詞1 （捆; 系） bind; tie 2 （控制; 約束）control; restrain Ⅱ量詞（用於捆在一起的東西） bundle;...
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 波束 : wave beam; beam; wave packet波束空間 [半] wave number space
  • 方向 : direction; orientation
  1. A conc1usion can be drawn that these algorithms has better preci si on and fitting for the multi - - beam swath bathymeter system better on the condition of 1arge beam ang1e, and can improve the precision of edge beams in non - - specu1ar seabed region

    證明bdi和分裂孔徑相關法可以精確地對海底回波信號進行回波時延估計和方向估計，可提高非鏡向海底區域的邊緣波束的測量精度。
  2. First, the nonlinear ls problem without constraint is converted to that subjected to inequality constraints by putting constraints on the do as of the received signals and toas of the first arrived signal with geometrically based single - bounce ( gbsb ) statistical channel model and cost - 207 model. then, a penalty function is used in the estimation of ms position

    首先，用基於幾何結構的單次反射圓模型和cost - 207模型，對期望定位用戶的各條多徑信號的波達方向和最先到達多徑信號的時間進行約束，將傳統的解無約束的非線性最小二乘定位問題或近似線性最小二乘定位問題轉化為解不等式約束的非線性最小二乘定位問題；然後，用內點罰函數法估計移動臺的位置。
  3. Firstly, the steering vector of mainpath of desired user is estimated by using code filtering method, then dummy signals are introduced, main lobe of wave is built by using the steering vector of mainpath of desired user and side lobes is constrained by using dummy signals

    該方法首先利用碼濾波的方法估計期望用戶主徑的波達方向，然後引入虛擬信號，利用期望用戶主徑的波達方向形成波束的主瓣，並利用虛擬信號抑制旁瓣。
  4. The correct estimation of incident signals " direction of arrivals ( doas ) is the premise of doa - based beamforming algorithms

    對來波的波達方向（ doa ， directionofarrival ）進行正確估計是doa波束形成演算法的前提條件。
  5. Then, the capacities of round - off method, two probable value method ( tpvm ), shift and compensate phase feeding method ( scpfm ) and shift compare and compensate phase feeding method ( sccpfm ), are compared in improving the accuracy of beam pointing

    接著，通過模擬實例比較了舍尾法、二可能值法、遞推補償饋相法、遞推比較補償饋相法等幾種提高波束指向精度方法的優劣。
  6. The computer simulations indicated that the weighted subspace fitting technique in the beamspace possessed a significant advance of 2 - d estimation for coherent sources

    計算機模擬表明，在波束空間內的加權子空間擬合技術具有良好的相干信源二維波達方向估計性能。
  7. For the purpose of estimating 2 - d doa of uniform circular array ( uca ), phase mode excitation based uca beamforming is employed to obtain real - valued beamspace manifold

    對均勻圓陣列（ uca ）二維波達方向估計問題，運用相位激勵模式波束形成技術，得到圓陣波束空間實值陣列流形。
  8. Combining the blind beamforming with the estimation of doa, the doa can be estimated at the same time when the source signals are recovered

    並將盲波束形成與目標方位估計相結合，實現在捕獲、恢復目標源信號的同時，估計出目標的波達方向。
  9. Method for improving the beam - steering accuracy of phased array antenna

    提高相控陣天線波束指向精度的方法
  10. With compensation of signal ’ s time delay from different radiating element by phase shifters, phased - array antenna can control array beam easily. because there are no mechanical devices for rotating beam, the phased - array antenna system can scan everywhere in beam covered areas in millisecand by stepping the phase shifters. it improves the tracking velocity of antenna towards the object, and becomes the development trends of weapon system antennas

    相控陣天線利用移相器補償信號到達輻射單元時間的差異，從而控制波束方向;天線沒有機械旋轉問題，只需改變移相器的設定值，波束便可以在毫秒級內掃描其覆蓋空域內的任何地方，提高了天線對目標的跟蹤速度，是目前武器系統天線的發展方向。
  11. In order to be applicable to practical underwater systems, several kinds of the blind beamforming algorithms were discussed in this thesis, and direction - of - arrival ( doa ) estimation based on bbf is also discussed

    針對水下聲系統的應用背景，本文對盲波束形成演算法做了系統的分析與討論，並對基於盲波束形成的目標波達方向估計進行了研究。
  12. The wsf method and ml method can be used in direction finding of coherent sources. we find that tam has the widest direction finding range while the available direction finding ranges of the dsam, sam _ isp, sam _ aisp, sam _ gsp and sam _ agsp are in a certain area centered at the look direction. the sam _ isp, sam _ aisp, sam _ gsp and sam _ agsp can change the effective direction finding ranges by adjusting their inner parameters and furthermore they can improve the sidelobe suppression effect compared with the dsam method

    得到tam的測向范圍最寬，基於后五種簡化陣列流形的測向方法其測向有效范圍均是集中在波束指向附近的一定范圍內，其中sam _ isp 、 sam _ aisp 、 sam _ gsp和sam _ agsp對應的測向范圍可通過調整內部的參數進行相應的調整，相應地較dsam也可改善對旁瓣源的抑制效果。
  13. A single correction method is provided, that is, based on the height finding value of the primary radar and the height finding value of the secondary radar, the paper calculates the adjustment quantity of the antenna beam direction, micro - adjusts the arrary of antenna, and so that it improves the accuracy of height finding

    並提出了一種簡單易行的修正方法，即根據一次雷達的測高值和二次雷達的測高值計算出天線波束指向的調整量，對天線陣面波束指向進行微調，從而提高了測高精度。
  14. Blind beamforming ( bbf ) is concerned with the reconstruction of source signals from the outputs of a sensor array without a priori information of the direction of the desired source, relying instead on signal characteristics and array structures

    盲波束形成無需知道目標波達方向等先驗信息，直接利用信號、基陣自身的特性，就可從基陣的輸出采樣信號中恢復出期望信號。
  15. The system is designed so that stray reflections of the user ' s signal against vehicles or buildings do not trigger abrupt changes in the direction of the beam

    這個系統經過特別的設計，所以用戶的訊號雖然會受到車輛或建築的胡亂反射，但是並不會導致波束方向發生突兀的改變。
  16. The beam width is stretched. the algorithm performance has the very big weaken. but the convention beamforming algorithm performance is stabler, time delay unbalance, time domain sampling, plane wave supposition and array element the influence which creates to it is not big

    通過比較，高解析度演算法在考慮上述情況后，波束方向出現偏差，束寬被展寬，幅度有很大的衰減，性能明顯下降;而常規波束形成演算法的性能較穩定，延時失配、時域抽樣、平面波假設和基陣的幅相不一致對其造成的影響不大。
  17. In this way, the missile " rides " the external radar beam to the target

    用這種方法，導彈「駕乘」外部雷達的波束飛向目標。
  18. After the ls - cma captures a cm signal, the relationship between the weight vector and the do a of the other signals is derived. initial weight vectors are set hi the directions of the other cm signals by lcmv algorithm. thereafter, the blind beamforming for the other cm signals can also be realized

    首先，我們導出了恆模演算法收斂于任意一個恆模信號后，其恆模演算法的權向量與其它用戶波達角之間的關系，然後在不同用戶的波達方向上形成初始增益，進而對所有的用戶實現波束形成。
  19. Besides, it ’ s also very convenient to add many kinds of phase errors required by the phase error compensation and sar image processing research farther. for imaging algorithms, range - doppler algorithm is extended to broadside stripmap airborne bistatic sar successfully

    另外，在我們方法的流程中可以方便地加入載機運動參數誤差、天線波束指向誤差及頻率源的穩定性等各種相位誤差，也為今後進一步研究相位誤差補償及圖像處理等技術打下了良好的基礎。
  20. Detailed analyses the algorithm of weight parameter. introduced the different algorithms of digital beam forming ( dbf ) and direction of arrival ( doa ). based on multi - aircraft tracking telemetry and command system, detailed introduce gradient algorithm pattern which follows the lms error norm

    介紹了數字波束形成的基本原理，詳細介紹了波束形成的權值演算法，研究了數字波束形成以及波達方向確定的各種演算法，結合多飛行器測控系統詳細介紹了在最小均方誤差準則下的梯度演算法模型。
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