測距通道 的英文怎麼說

中文拼音 [cèjùtōngdào]
測距通道 英文
range channel
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 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...
  • 通 : 通量詞（用於動作）
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  • 測距 : range [distance] finding; distance measurement; ranging; stadiometry
  • 通道 : thoroughfare; passageway; pass; enterclose; gallery; drong; tunnel; avenue; alure; way; row; key ...
  1. And the deficiencies are pointed out in present researches, such as highway capacity, level - of - service, influence factor of road alignments, etc. from these, it has confirmed that the thesis should be studied from rational analysis, quantitative analysis of level - of - service, impact on capacity of road alignments, setting - up simulation model, etc. the high - accuracy gps dynamic data acquisition appearance is proposed to be used for the first time to carry on the experiment of overtaking on two - lane highways, and experiment scheme is designed according to the driver ' s perceive to judge each overtaking course. based on the experiment data, it can get two important parameters of acceptant gap ? the critical gap of overtakable time headway and returnable time headway through data processing, which can offer the strong support to the research of two - lane highway capacity with qualitative and quantitative analysis. besides, the experiment methods is provided to observe overtaking ratio and to measure the

    研究中首次提出了運用高精度gps動態數據採集儀對雙車道公路上的超車行為進行觀測，設計了根據駕駛員感受度來衡量超車過程的實驗方案，並通過後期數據處理得到了超車過程中兩個重要的可接受間隙參數-可超車車頭時距和可回車車頭時距的臨界間隙值，為定性和定量分析雙車道公路通行能力提供有力的數據支持;同時，還提出了觀測超車率的實驗方法以及測量加速度干擾的實驗方案，統一了計算加速度干擾的時間統計間隔，為雙車道公路的服務水平量化研究奠定基礎;最後還簡單介紹了駕駛員問卷調查法和模擬程序中模型參數標定和驗證的數據採集方法。
  2. Based on the investigation and research, the paper gives a testing method, which measures the taking off and landing distance of airplanes with the laser locating system for airplanes trace. and by way of the field measuring on plateau airports, we have got the integrated modifying coefficients of three kinds of airplanestaking off and landing running distance such as h6. all of these provide scientific basis for the runway length design of the plateau airport

    在調研論證的基礎上，提出了利用《飛機起落航跡激光定位系統》測定飛機起飛著陸滑跑距離的測試方法，並通過高原機場實地測試，得出了三種飛機在高原機場上起飛著陸滑跑距離的綜合修正系數值，為高原機場跑道長度設計提供了可靠的理論依據。
  3. Based on mono - pulse radar system and the analysis of terrain echoes, a geometrical model of air to ground ranging is constituted. by using the signals received from the sum and difference channels of terrain follow radar, a group of the expressions for terrain echoes are educed and characteristics of these echoes are obtained. according to the characteristics of the echoes, the theory and method of pass zero detection of difference channel and its applications are discussed in detail

    針對一維單脈沖雷達體制，分析了地形目標回波特性；建立了地形跟隨雷達空地測距的幾何關系；利用雷達收發信號，導出了地形跟隨雷達和差接收通道的回波信號表達式，進行了波形模擬，得到了地形跟隨雷達的地面散射產生回波在時域中的特性；根據和差回波特性，闡述了差信號過零點檢測測距的原理和方法及工程實踐中的應用，並給出了真實雷達對外輻射試驗的結果，驗證了文中的模擬。
  4. At the same time, at the aspect of theory, we give a lot of results, including : performance calculating formula of fft phase comparing, coincidence relation of calculating result and target " s real range, calculating formula under zeroize fft or single channel

    在相關理論上，我們提出了fft比相的性能指標計算公式、 fft比相下測距結果與目標實際位置之間的對應關系、補零和單通道下的fft比相結果。
  5. The underwater - radio buoy for use as obtaining the ocean " s acoustical parameters is a underwater acoustic signals record system which has long distance radio remote control and data transmit function. the technology key of the dissertation study is that under the requirements of the system the monitor and record equipment on the acoustic source vessel, the monitor and record equipment on control vessel command and control the work slate of the buoy system by radio data transmitting mode of short wave transmitter - receiver

    海洋環境參數獲取浮標監測系統屬于具有長距離無線電遙控?數傳功能的水下聲信號接收記錄系統，本論文研究目標的技術關鍵在於根據系統要求，指揮船和發射船監控記錄設備通過短波電臺以無線數傳方式，對浮標系統的工作狀態進行指揮和控制，浮標則通過同一短波通道向指揮船上報浮標方位、工作狀態、關鍵數據及非常狀態下的報警信號等。
  6. According to professor hu, the aim of the project is to bring the public in direct contact with robots, increasing their understanding of science and technology : this work has many real - world applications including seabed exploration, detecting leaks in oil pipelines, mine countermeasures, and improving the performance of underwater vehicles

    ）教授的觀點是，該項目的意圖是讓公眾有機會與機器人近距離地接觸來提高他們對科學技術的認識程度： 「這項工作能廣泛地應用於現實世界的海底勘探、海底輸油管道裂縫探測，進一步完善海底開采手段以及提高水下交通工具的操作性能等方面。 」
  7. Product introduction bst - ant - g0 series access product adopts integration design, and synthesizes the antenna rfidreader infrared ray check voice and light alarm and powerful io controller. its read range can up to 120cm, and use for identifying personnel or goods passing in or out the access

    Bst - ant - g0系列通道產品採用一體化結構設計，集成天線系統rf讀寫設備紅外檢測聲光報警和功能強大io控制器，讀寫距離可達120cm ，可用於人員貨物通道進出識別。
  8. The results show that the wayside noise increases 8db - 12db, if the train ' s velocity increase two times ; and increases 3 db, if the number of axles increase tow times ; and decreases 3db, if the distance far away from the track increase tow times damping loss factor increases, the wayside noise decreases ; coupling loss factor increase, the wayside noise increase

    預測結果表明：列車通過時，在其他條件不變的情況下，列車速度增加一倍，輪軌輻射噪聲大約增加8db 12db ；列車軸數增加一倍，輪軌輻射噪聲大約增加3db ；預測點距軌道距離增加一倍，輪軌輻射噪聲大約降低3db 。
  9. A potentially feasible method is the use of a chaotic system ' s high sensitivity under condition to detect weak signals, which is quite different from all present methods. fixing parameter of components in a nonlinear circuit, chaotic orbits change with the measured signal. a distance has been defined

    利用混沌系統的初值敏感性進行小信號測量是一個很好的有應用潛力的方向，它的測量原理與現有的測量原理完全不同，其基本思想是將待測信號作為混沌系統的初值，在參數不變的條件下，利用混沌系統的初值敏感性，使混沌軌道隨待測信號的變化而變化，定義軌道距離，通過測量軌道距離的變化即可測得該小信號。
  10. Now, it contracted obviously the disparity with whole country advanced level and raised the testing accuracy and research levels that the research institute whose experiment area is big and the devotion value is high, purchased lately a number of advanced experiment instrument equipments and software, for instance, model machine quickly, tri - coordinate measure machine, laser 3d scanners, multicenter vibration test and analysis system, electronic all - powerful experiment machine, hydraulic presses servo fatigue test machine, festo machine electricity to imitate manufacture system, the software of cad / cam / cae and so on

    如今，研究所的實驗面積大、投入價值高，新購置了快速成型機、三坐標測量機、激光三維掃描儀、多通道振動測試與分析系統、電子萬能試驗機、液壓伺服疲勞試驗機、 festo機電模擬生產系統、 cad / cam / cae軟體等一批先進的試驗儀器設備和軟體，明顯縮小了與全國先進水平的差距，提高了試驗的準確性和科研水平。
  11. Over - the - horizon radar ’ s beam - frequency is high frequency band and its wavelength is so long that the annate ’ s characters are very complicated when applicated on the ship. the character of coupling between cells and the environment must be measured to compensate in the radar signal process step. the ship - based over - the - horizon radar uses cfa ( crossed field antenna ) as array antennas ’ cell

    艦載超視距雷達使用高頻信號作為發射頻率，其波長較長，在艦船有限的空間內，陣列天線的陣元之間的耦合與陣元與背景之間耦合都十分嚴重，必須測量陣列天線通道的幅相一致性，作為雷達信號處理的補償參數。
  12. Conventional detector ( single - user matched filter ) distinguishes each user by the crosscorrelation of their spread - spectrum codes. in practice, however, its performance is much deteriorated due to the existence of noise in channel and strong multi - access interference, i. e. near for effect. a new method using independent component analysis is proposed in this paper. the - received energy of signals is controlled effectively, thus the near - far effect is overcome as much as possible ; moreover, the effect that noise imposed on the detector is mostly reduced. simulations verify the effectiveness of this method

    傳統檢測器（單用戶匹配濾波）利用擴頻碼之間的互相關特性來區分各用戶信號.而在實際應用中，通道噪聲和近距離用戶對遠距離用戶的強多址干擾即遠近效應，使得接收機的性能受到很大影響.本文將獨立分量分析法引入傳統接收機，有效控制接收信號的能量，從而極大地提高了接收機的抗遠近性能，同時噪聲的影響被盡可能消除.模擬結果表明了該方法的有效性和可行性
  13. In the second part, the new method is compared with the old one in such aspects as system structure and signal processing methods. in the third part, the properties of dsss and lfm systems, especially the echo signal correlation processing of the systems are discussed. the last part are the respective analyses of water - pipe simulation experiment results and the trial results in zhong yuan oil field

    本文首先介紹了超聲測距的基本原理，分析了通道的聲傳輸特性；接著將傳統液位測量方法和新型液位測量方法的系統構成和信號分析處理方法做比較；然後對系統的發射信號（直接序列擴頻信號和線性調頻信號）的特點進行了研究，並著重討論了回波信號的相關處理；最後對水管模擬實驗測量結果和油田實地測量結果分別進行了分析和討論。
  14. This instrument hopes to control the step - motor regularly, and collects the datum of the distance between the laser sensor and the wall simultaneously, then calculates area according to the theory of triangle, finally sums up all the area and makes the output

    本系統前向通道信號由激光傳感器提供，後向通道信號發給步進電機、傳感器，由於是旋轉式測量，必須控制激光發射信號的通斷和步進電機的步距角，否則測出的值是無法計算的。
  15. In the third section, the simulation on music direction finding and the influence that is caused by snr, space between antennae, signal frequency and channel mismatch is analyzed. according to the single known - direction source calibration method, the channel mismatch is calibrated

    第三部分介紹了music測向基本原理，詳細分析了信噪比、陣元間距、通道失配等因素對其測向結果的影響，並利用單信號有源校正方法，對通道失配進行了校正，提高了測向精度。
  16. Presently, the apon system adopts tdma as the access mode on the uplink. it requires not too much in terms of optical performance, but it requires more complex electronic equipment ( e. g., complex synchronized timing, ranging and delay control technolgies ) to avoid the collision of uplink information packets

    目前apon系統在上行通道中採用時分多址的接入方式，它對光性能方面的要求不高，但它要求更復雜的電子設備，如要求復雜的同步定時、測距和延時控制技術，以避免上行信息分組產生碰撞。
  17. Spread spectrum technique, which can handle variable adverse environments, exhibits unique qualities that have a number of advantages in anti - jamming, anti - noise, reduction of multi - path interference, low power spectral density, privacy, selective addressing and code division multiplexing

    擴頻通信技術具有優越的抗干擾、抗噪音、抗多徑衰落性能，能在低功率譜密度下工作，具保密性、可多址復用和任意選址，能有效克服各種惡劣的通道特性，目前廣泛應用於移動通信、雷達、導航、測距、電力線通信等領域。
  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. The theory calculation results and several factors which affect range precision are also discussed. in this paper electromagnetism compatibility and the methods to avoid it are proposed

    對射頻通道鏈路及測距精度進行了詳細的分析和計算，給出了理論計算結果、討論了影響測距精度的幾個因素。
  20. Basically the paper configured to use series - parallel ways to accomplish quick phase capture, and therefore realize telemetry and communication at the same time. the paper gives the simulation ways of matlab, systemview and vhdl of the method mentioned above. and the simulation results show that the complex system can realize the theoretical target, including communication and telemetry simultaneously, finishing real - time measuring with high accuracy and huge range, realizing system function in unrealistic circumstances

    本論文在前面章節理論分析和推導的基礎上，應用matlab 、 systemview和vhdl硬體描述語言等模擬軟體編制時間流和數據流程序，對系統的技術性能進行模擬，結果證明復合系統能夠較好地完成系統設計指標：同時完成擴頻通信和測距任務，實現高精度、大量程、實時地測距，實現惡劣通道環境下系統的正常工作。
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