arrival time difference 中文意思是什麼

arrival time difference 解釋
到達時差
  • arrival : n. 1. 到達，抵達。2. 到達者；到達物。3. 出現，登場。4. 新生嬰兒。
  • time : n 1 時，時間，時日，歲月。2 時候，時刻；期間；時節，季節；〈常pl 〉時期，年代，時代； 〈the time ...
  • difference : n. 1. 差異，差別。2. 不和，爭論。3. 【數學】差，差額。4. 【邏輯學】特殊性。vt. 〈罕用語〉區別，使有差別。
  1. Ssp inversion based on ray arrival time difference in shallow water is presented and related algorithms are developed. the feasibility and practicability of the algorithms are studied by using the experimental data in the east china sea

    提出了一種基於特徵聲線的到達時差反演淺海聲速剖面的方法，推導和論證了到達時差反演淺海聲速剖面的演算法。
  2. Referring to the classical location method attributed to geiger, this paper brings up a scheme according to energy tracking and time difference of arrival ( tdoa ) theory to the position location of the survivor. and proves the feasibility of this scheme through a series of experiments

    參照經典的地震定位方法（ geiger法） ，提出了一種基於能量追蹤和時差定位的生命搜索定位技術方案，並且通過模擬實驗和計算，論證了該方案的可行性。
  3. A new passive localization estimate algorithm of time difference of arrival ( tdoa ) to improve the accuracy of target localization was proposed, and the ambiguity and unsolvable problem were solved

    摘要給出了新的定位演算法以提高對目標的定位精度，解決了模糊和無解的問題。
  4. Of the difference between the time taken for fire engines and ambulances to reach the scene of accidents in the areas mentioned above and the arrival time in other areas ; and

    消防車及救護車抵達上述地區意外現場的時間較抵達其他地區意外現場時間的相差為何及
  5. In 3g communication system, the most promising location method was the locating arithmetic based on the time of arrival and the time difference of arrival ( toa / tdoa ) of signal, or the angle of arrival of signal ( aoa ). however, either the arithmetic based on toa or that based on aoa was badly affected by the none line of sight ( nlos ) phenomenon

    在第三代移動通信系統中，最有前景的定位方式是基於信號到來時間/時間差（ toa / tdoa ）或信號到來角（ aoa ）的定位演算法。但不管是基於信號到來時間的演算法還是基於信號到來角度的演算法，定位信號的非視距傳播效應（ nlos ）都會對其造成嚴重的影響，在影響移動定位精度的諸多因素中nlos效應被公認為是最主要的因素。
  6. A new detection system applying moving platform, which overcomes the shortcoming of traditional long baseline time difference of arrival ( tdoa ) detection system, is presented, and its principle are also included

    摘要針對傳統長基線時差探測系統的缺點，提出了全新的動基站時差測量系統並給出了目標的定位原理。
  7. In the aspect of detection and high precision estimation of seafloor backscattering, algorithms of fast convergence of energy center and correlation of eigen - replica were developed. also studded were processing methods of weighted mean time ( wmt ) and bearing direction indicator ( bdi ) based on fft beam forming as well as high precision detection and estimation of time of arrival ( toa ) and direction of arrival ( doa ) using split beams phase difference detection technique

    圍繞海底反向散射信號的高精度檢測和估計技術，開發了快速能量中心收斂演算法和特徵模型相關演算法，研究了基於fft波束形成的加權時間平均與方位指示處理方法，並討論了利用分離波束相位差檢測技術的海底反向散射信號到達時間（ toa ）和到達方向（ doa ）的高精度檢測與估計方法。
  8. Based on the time difference of arrival in time range and the direction of arrival of the emitter in space range, passive localization by single station is practicable, and also the localization of maneuvering target is practicable with the mgekf algorithm

    在建立目標機動模型與測量方程的基礎上，運用修正增益擴展卡爾曼濾波（ mgekf ）演算法，實現對機動目標進行定位與跟蹤。
  9. The emitter location methods commonly include : angle of arrival ( aoa ) measurement, time - difference - of - arrival ( tdoa ) measurement and aoa together with tdoa measurement. this paper derive some important techniques and theories bearing upon passive location in this field. three kinds of passive location algorithm in three - dimensional ( 3 - d ) space are deduced based on that of 2 - d space. at the same time each performance is analyzed, each graph of geometric dilution of precession ( gdop ) is emulated for different station position, different measurement error, and different target height. accordingly some valuable academic and emulational results are obtained by myself, which will provide researches in this field with definite technical refrence. at the end of this paper, the passive location method of jtids ( joint tactical distribution systems ) is discussed, which is expected to enforce the tactical performance of jtids in the intending development

    本文汲取了該領域有關被動定位的重要技術和理論，在二維平面無源定位演算法的基礎上推導出了三維空間內的三種無源定位演算法，並對各自的定位性能進行了理論分析和計算機模擬，模擬出不同的布站、不同的測量誤差以及不同輻射源高度的情況下，三種定位方法各自對應的定位精度（ gdop ）分布圖，同時對各自的定位性能進行了改進處理，得出了一些有價值的理論和模擬實驗結果，這些結論可為今後在此領域的研究提供一定的技術參考。
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