直達波 的英文怎麼說

中文拼音 [zhídábō]
直達波 英文
direct path wave
  • 直 : Ⅰ形容詞1 （成直線的; 硬挺的） straight; stiff 2 （跟地面垂直的; 從上到下的; 從前到后的） erect; v...
  • 達 : Ⅰ動詞1 （暢通） extend 2 （達到） reach; attain; amount to 3 （通曉; 明白） understand thoroughly...
  • 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...
  • 直達 : through; nonstop
  1. The object of the filtering is to enhance the direct pulse from the shot and to attenuate the ghost.

    濾波的目的，是改善來自炮點的直達脈沖並壓制伴隨波。
  2. The video signal is directed to the crt through a sound trap which eliminates the sound-carrier frequency.

    視頻信號通過聲音陷波電路，消除聲音載波頻率，直達CRT。
  3. A radar beam picks out the moving target and stays with it all the time.

    雷達波束能辨認出活動的目標，並一直跟蹤該目標。
  4. The master dissertation introduces passive correlative orientation system and base theory in signal dispose briefly in the first place. the system takes tv sound fm signal from tv satation signal. the power rate of tv station signal to sound signal is ten to one. in the case of submerged by mussy weave and machine ' s hot noise, dispersed target signal is feeble

    系統採用電臺的電視伴音調頻信號，其中電臺信號與伴音信號功率之比基本為10 ： 1 ，並且目標散射信號較弱，一般情況下淹沒在雜波和機器熱噪聲之下，採用常規的脈沖檢測方法很難對遠距離的目標進行檢測，而以電臺直達信號作為參考與目標回波信號進行相關檢測；系統中信號的相關處理會產生旁瓣，而強目標的旁瓣會影響附近的弱目標檢測。
  5. We ' re ready to balance our diet of predigested news with raw feeds from baghdad and boston and beijing

    我們寧願把來自巴格達、波士頓和北京的現場視頻直播，同剪輯過的電視新聞加以比較、鑒別。
  6. Present a modified particle filter ( pf ) algorithm based on the los / nlos binary state information of propagation environment using the numerical method of the probability density function ( pdf ) about the hybrid noise. the key idea is using numerical method to calculate the hybrid noise pdf, and integrating binary environment information to get filtering result

    2 .給出了應用粒子濾波器改進直達波與非直達波混合環境中移動終端跟蹤性能的新演算法，特色是利用數值方法計算混合噪聲密度函數，結合二元環境信息完成濾波估計。
  7. In the light of the pulse width of the radar wave, this paper deals with the difference and the relationship between the vertical resolution and the transverse resolution of the ground - penetrating radar, indicates the influence of the noise upon the resolution and, with practical examples, points out that the digital handling of the signal can greatly improve the resolution of the radar

    摘要從雷達波脈沖寬度出發，闡述垂直解析度與橫向解析度的區別和相互關系，並同時指出噪音對解析度的影響，用實例說明訊號的數字處理能大大的改善解析度。
  8. For parameter a, there is a close relationship exist between a ( 9, sr ) in two different radar incident angle that can be expressed as : with considering the effects of soil texture, we get the final expression of the inversion model : where mv ( t1 ), mv ( t2 ) is volumetric soil moisture content in two different temp, c, d is soil type related parameters, and v ( t1 ), s ( t2 ) is coresponding bare soil radar backscattering coefficients. inversion results show that for the c band hh polarized radarsat scansar data with a range of incidence angle from 20 to 40, the soil moisture change value can be derived with an acceptable accuracy using the above model. the temporal and spatial soil moisture change patterns are associated with rainfall and vegetation cover, as well as the soil hydraulic characteristics

    利用最新發展的電磁波散射模型研究了不同植被覆蓋地表雷達波對地表土壤水分的敏感性，建立了半經驗植被雷達後向散射模型; 2 ） .研究發現在農作物等矮小植被覆蓋地表，植被層直接後向散射與植被類型相關，且在植被生長期，雷達後向散射系數對植被含水量的敏感性要高於對植被高度變化的敏感性; 3 ） .解決了單參數雷達地表土壤水分反演問題中，雷達入射角和地表粗糙度的影響這一難點問題; 4 ） .利用土壤介電模型校正了不同土壤類型對反演地表土壤體積含水量的影響; 5 ） .在以上成果基礎上，建立了完整的單參數雷達地表土壤水分變化探測反演演算法，經地表驗證，模型反演地表土壤水分變化值的精度為rmse = 0
  9. Discussion on calculation method of peak pressure subjected to shallow - layer water explosion

    淺層水中爆炸直達波壓力峰值計算方法探討
  10. The debris falling back to earth may generate additional direct and surface-wave noise.

    碎石落回地面可產生附加的直達波和面波噪聲。
  11. This reflected blast wave, like the original (or direct) wave, is also capable of causing material damage.

    反射爆震波像入射（或直達）波）一樣，也會對物質起破壞作用。
  12. The video signal is directed to the crt through a sound trap which eliminates the sound - carrier frequency

    視頻信號通過聲音陷波電路，消除聲音載波頻率，直達crt 。
  13. These were the priests - initiates - whose time lines moved from egypt and the ancient mystery school teachings, to mesopotamia, to persia and zarathustra / zoroaster

    這些是祭司? ?傳授? ?時間線從埃及和古代神秘學校的教導轉移到美索不達米亞，直到波斯和瑣羅亞斯德教。
  14. Basically, the cross - well seismic data processing has two steps : traveltime velocity inversion tomography for direct arrival and seismic reflection stack image

    井間地震資料的處理主要包括兩個最基本的內容，即直達波旅行時速度反演層析成像和地震反射波疊加成像。
  15. Meanwhile, three los ( linear of sight ) location algorithms are analyzed. these algorithms are simulated both on the los situation and nlos situation

    同時還分析討論了現有的幾種直達波定位演算法，並在直達波環境下和非直達波環境下對現有的基本直達波演算法進行了模擬。
  16. The sirt inversion operator can be applied to solve the large - scale sparse linear equation and velocity tomographic inversion can be performed based on direct arrival traveltime and accuracy could be 3 meters

    研究成功的sirt反演演算法可用於求解大型稀疏超定線性方程組，根據直達波旅行時進行速度層析反演，其精度可達到3米。
  17. The precondition for processing cross - well seismic data is that to perform the original data analysis thoroughly and determine the various waveforms and wave field as well as using the effective way to boost the direct arrival and reflection and suppress the disturbances and other noises

    處理井間地震資料的前提是全面詳盡地分析原始資料，判別確認記錄上的各種波型與波場，採取有效手段突出直達波和反射波等有效波，壓制干擾波和噪音。
  18. Wireless localization and tracking is a hot research topic, several theorestic and applied results have been in recent years. this paper addressed two problems : 1. how to mitigate position error caused by non - line - of - sight ( nlos ) propogation when we use range - based tracking algorithm in cellular networks

    本文探討了其中的兩個問題: 1 .在跟蹤蜂窩移動通信網路中移動終端的運動軌跡時，如何利用粒子濾波器減弱非直達波傳播對濾波跟蹤演算法精度的顯著影響
  19. The simulation results show : if there are three base stations, the performance of those los algorithms is similar. but the location error of the nlos situation is bigger than the los situation ’ s. therefore, new algorithm on the nlos situation is necessary to be developed

    模擬結果表明:在三基站參與定位的情況下， 5種直達波定位演算法性能相當，但其非直達波環境下的定位精度差於直達波環境下的定位精度，因此有必要提出新的演算法提高非直達波環境下的定位精度。
  20. Based on the facts that time of arrival ( toa ) of the first multipath signal is always most close to that of los propagation and angle of arrival ( aoa ) of the first multipath signal is not always most close to that of los propagation among all multipath signals in nlos propagation environment, a location algorithm is proposed to mitigate the influence of nlos propagation, which effectively reduces the feasible region of a ms in macrocells

    依據在非視距傳播環境下存在的以下兩個事實：第一，最先到達多徑信號的波達時間總是最接近直達波的波達時間。第二，最先到達多徑信號的波達方向並不一定最接近直達波方向。針對宏蜂窩系統，從有效減小移動臺可行域的角度，提出了一種減輕非視距影響的定位演算法。
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