視距傳播 的英文怎麼說

中文拼音 [shìjùzhuànbō]
視距傳播 英文
line-of-sight propagation
  • 視 : Ⅰ動詞1. （看） look at 2. （看待） regard; look upon 3. （考察） inspect; watch Ⅱ名詞（姓氏） a surname
  • 距 : Ⅰ名詞1 （距離） distance 2 （雄雞、雉等的腿的後面突出像腳趾的部分） spur （of a cock etc ）Ⅱ動詞...
  • 傳 : 傳名詞1 （解釋經文的著作） commentaries on classics 2 （傳記） biography 3 （敘述歷史故事的作品）...
  • 播 : 播名詞（姓氏） a surname
  • 視距 : apparent distance
  • 傳播 : 1 （廣泛散布） disseminate; propagate; spread; （over）; diffuse; transmit; run 2 [物理學] propag...
  1. Depending on the characteristic of the mobile station system can reduce more influence such as multipath interference and none - line - of - sign ( nlos ) propagation than fixed station

    同時利用該系統自身特點，避免了許多在固定站系統中多徑干擾、非視距傳播等定位難題。
  2. Because of the earth's curvature, the range is, broadly speaking, limited to the visual horizon.

    由於地球的曲率，它的傳播距離大體上說只限於視線所能及的范圍。
  3. For this reason television signals have a short range

    因此，電視信號的傳播距離很短。
  4. It is impossible to send live television by direct transmission over a long distance because the earth is round

    由於地球是圓的，用長距離直接傳送來發射直播電視信號是不可能的。
  5. 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。
  6. Firstly, the paper, combining the characteristic of synchronous pulse bursts and inhibition with the modified pcnn model, presents a way of finding the foveation points in the images adaptively and effectively, and simulates the human vision system. secondly, pcnn is extended to pcnns, based on the properties of information couple and transmission, an algorithm that is used to fuse images of the same target got by several sensors to an image is presented to simulate the human vision system. thirdly, combining the properties of synchronous pulse bursts, capture, and transmission and competition of waves, the paper presents two ways of classification, one is an algorithm based on the properties of neuron to capture and inhibit to classify the data taking on any complex unlinear distribution robustly, the other is based on the restricted distance and modified of the former to remove the influence of inferior samples in classification ; fin ally, based on the accumulative difference pictures, and the forming and transmission of pcnn wave, selecting and controlling the direction of autowave by connecting the neighbouring neurons selectively, the paper presents a way to simulate the tracks of moving object and detect the moving direction

    首先結合pcnn的同步脈沖發放和側抑制特性，提出了基於改進型pcnn的圖像凹點檢測演算法，該演算法是一種自適應而有效的圖像凹點檢測方法，並且較好地模擬了人類視覺系統；然後，結合信息傳遞和信息耦合特性，將pcnn擴展成pcnns （ pcnn網路群） ，提出了一種基於pcnns的圖像融合演算法，能夠將多個傳感器獲取的同一目標的圖像信息融合到一幅圖像中，有效模擬了人類視覺系統；另外，結合pcnn的同步脈沖發放特性、捕獲特性和波的傳播競爭特性，開拓地將pcnn用於模式分類中，提出了基於耦合神經元點火捕獲抑制特性的分類方法和改進的約束距離下的pcnn分類方法，前者可實現對樣本空間中任意復雜分佈訓練樣本的穩健非線性分類，而後者能夠消除訓練樣本中刺點對分類的影響；最後，結合累積差分圖像思想、 pcnn波的形成與傳播特性，通過各神經元之間連接取向來選擇與控制自動波的流向，將pcnn用於運動視覺分析中的運動軌跡模擬及運動方向檢測。
  7. This sign uses the business name chinese to manifest the symbol the localization, the culture is pregnant with canada manifested the zero to away from the cultural dissemination is take the native place culture, the native place market as the important media television advertisement company

    該標志採用企業名稱的中文來體現標志的本土化，文化寓意深刻、繼承中國文化漢字語言表達方式，更加體現了零距離文化傳播是一家以本土文化、本土市場為重要傳媒的電視廣告公司。
  8. Because of radio wave propagating along the ducts with enhanced fields on the order of the free - space field, the problems of the co - channel interference are more complicate for communication systems with the results of intersystem interference and the formation of other system, and therefore affecting the determination of the coordination distances or the optimization of the distribution and separation of delay, and for surveillance system such as radar system the problems can be radar holes or the extensions of detect range

    對于通信電路，它使系統間的相互干擾問題變得復雜，既可能幹擾其他系統又可能形成另外的系統，從而影響系統的有關參數如中繼電路的最佳組合（分佈、間隔）和協調距離，對于探測系統產生的則是雷達空洞、超視距探測等問題。這些問題對相關無線電系統特別是軍事應用系統可能是致命的，因而以波導傳播為代表的反常傳播特性研究受到極大重視。
  9. High frequency surface - wave radar ( hfswr ) utilizes the surface - wave mode of vertical polarization electromagnetic wave propagation over sea water to detect targets of ships and aircrafts at distance beyond the line of sight

    高頻地波雷達（ hfswr ）依靠高頻垂直極化電磁波沿海洋表面繞射傳播的機理，實現對海面艦船目標和低空飛行目標的超視距探測。
  10. Therefore, techniques must be developed to mitigate these impairments and improve the location accuracy

    特別是非視距傳播效應是導致定位誤差的主要原因，必須採用相應的演算法來減小它們的影響。
  11. In order to reduce measure error causing by nlos, it adopt and regard intensity of the signal as right value, construct some tdoa measurement value again with the priori information

    為了減少非視距傳播nlos引起定位參數測量誤差，採用以信號強度為權值，用先驗信息重構部分tdoa測量值。
  12. Propagation characteristics in land mobile service and fixed service. part 3 : propagation characteristics ofline - of - sight radio relay communication systems

    陸地移動業務和固定業務傳播特性第三部分:視距微波接力通信系統傳播特性
  13. 2. in the simulation environment which is deliberately designed for the othr ' s multipath propagation phenomenon, strict and detailed reasoning and demonstrations of the coordinate registration are given. and then a simulation justifies the correctness of the registration

    針對超視距雷達多徑傳播現象設計的一種模擬環境，對其中量測模型的坐標變換給出了嚴格而詳細的證明，然後根據證明的公式設計了具體的模擬示例，並對該坐標變換公式組進行了誤差統計。
  14. 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。
  15. And we discussed an equivalent method to model the spatial correlation of mimo channel

    討論了對相關性建模的等效形式和對視距路徑傳播的建模方法。
  16. Due to multipath effect, multiple access interference ( mai ), near - far effect, and mainly the non - li ne - of - sight ( nlos ) propagation, the errors in the estimated location parameters and position location occur

    在cdma蜂窩網的定位中，引起定位參數估計誤差與定位誤差的因素有非視距傳播效應、多徑傳播效應、多址干擾及遠近效應。
  17. A position estimate method is proposed, in which the los reconstruction and smoothing technique are combined to mitigate the influence due to nlos propagation

    提出了一種將視距重構與平滑處理相結合減小非視距傳播影響的定位方法。
  18. In cellular envirorunents, because of the influence of several adverse factors, such as muitipath, non - line - of sight propagation, noise, interference and channel frequency characteristics, radio statistics measuremenis like tdoa, toa and aoa related to mobile position, the performance of location algorithms mny be significantly degraded and the position estimation of ms is inevitably biased

    在蜂窩網路環境中，由於受多徑、非視距傳播、噪聲、干擾和通道頻率特性等多種不利因素的綜合影響，使tdoa 、 toa 、 aoa等與移動臺位置有關的電波特徵測量值不可避免地出現較大誤差，從而使各種定位演算法的性能顯著下降，造成移動臺位置估計出現較大偏差。
  19. At first, by using the feature that the excess delays of nlos propagation follow the exponential distribution, the los propagation parameters are reconstructed and the toa parameters measured from all bs are preprocessed. then, the ms ' s position is estimated by the los locating algorithm with the preprocessed data. finally, to mitigate the effect of the errors in reconstructed parameters, the estimated results are smoothed

    首先，利用非視距傳播時延服從指數分佈的特點，對不同基站一次測量的數據進行預處理，重構視距傳輸參量；然後，對處理后的數據採用視距定位演算法估計移動臺位置；最後，對估計結果進行平滑后處理，以減小重構出的參量誤差的影響，進一步提高定位精度。
分享友人
分享到 Line

分享到臉書