接收孔徑 的英文怎麼說

中文拼音 [jiēshōukǒngjìng]
接收孔徑 英文
receiving aperture
  • 接 : Ⅰ動詞1 （靠近;接觸） come into contact with; come close to 2 （連接; 使連接） connect; join; put ...
  • 收 : Ⅰ動詞1 （把攤開的或分散的事物聚集、合攏） put away; take in 2 （收取） collect 3 （收割） harvest...
  • 徑 : Ⅰ名詞1 （狹窄的道路; 小路） footpath; path; track 2 （達到目的的方法） way; means 3 （直徑的簡稱...
  • 接收 : 1 （收受） receive; reception; accept; [電學] receipt; receiving 2 （接管） take over; expropriat...
  1. Lc apparatus almost meet all the needs of space optical communication such as weight, size, power consume, life, cost, driving voltage, intergration of optics and electricity, programe, optically take ? over aperture, beam scanning, deflexional range and so on. switches, deflexional facilities and scanning equipments which made with lc have been used in the system of labor in space communication. the only bug of lc apparatus is that their answer speed only get microsecond rate or submicrosecond rate. but it is practical for them to be used in special beam capture, scan, deflexion controling which don ’ t concerned with code rate and code type

    液晶器件幾乎滿足空間光通信的所有大的指標要求如重量、尺寸、功耗、壽命、成本、驅動電壓、光電集成、可編程性、光學接收孔徑、光束掃描和偏轉范圍等等。液晶光開關、光偏轉器、光掃描器已經開始應用於光纖通信的實驗系統中。液晶類器件應用於光通信的唯一重大缺陷，是其響應速度目前只能達到微秒級或亞微秒級，不過，在不涉及到碼型碼率的空間光束捕獲、掃描、偏轉、控制方面，液晶器件完全可能進入實用化。
  2. The parameters that influence the single photon acquisition probability are the transmitter ' s tracking - pointing error, the far - field divergence angle, the link distance between transmitter and receiver and the receiver ' s antenna aperture

    得到影響單光子捕獲概率的主要參量是發射機的跟瞄誤差、光束遠場發散角、發射機和接收機的鏈路距離和接收機天線孔徑。
  3. To improve this ability, a higher cross - range resolution is needed. an inverse synthetic aperture radar ( isar ) achieves high resolution in the cross - range dimension by taking advantage of the motion between radar and targets to synthesize the effect of a larger antenna aperture

    逆合成孔徑雷達（ inversesyntheticapertureradar ，簡稱isar ）信號處理對接收到的運動目標的回波信號進行相干處理，等價成一個大口徑天線，很大程度上提高了方位向距離分辨力。
  4. The subject comes from the cooperation project “ x waveband sar receiver ” between chengdu sine science & technology ltd. and the uestc. the auther is responsible for the demonstrability of the rf receiver and the implemetaion of the lna in the system

    本項目來源於電子科技大學成都賽英科技有限公司與電子科技大學的合作項目「 x波段合成孔徑雷達（ sar ）接收機」 ，筆者進行了該接收機系統方案的論證及接收機前端低噪聲放大器（ lna ）的研製。
  5. Then we introduce the character of the atmosphere channel, which we emphasized on the atmosphere scatter, absorption and scintillation ' s effect on the laser beam. in chapter, we explain why we used cassegrain telescope to collect the optical signal at first, then the lightsource, detector, front amplifier used in optical communication has been compared to that of fiber communication, the noise including shot noise, thermal noise and background light noise has been explained here for analysis the snr and ber in the next section

    在第三章介紹無線光接入系統的光收發單元，採用多孔徑卡塞格倫式的收發天線對消除減小大氣湍流影響有較大作用，針對大氣通道的特點無線光系統收發單元在光源、光探測器、前置放大電路上存在許多有別于光纖通信的技術，同時還闡述了光接收機包括背景噪聲的噪聲機制和接收靈敏度、誤碼率等指標，最後給出了一個整個傳送鏈路的功率預算。
  6. This thesis is based on the project from the key laboratory of national defense in the 29th research institute - - - sar system for receiving and processing signal and its simulation research

    本文的研究來源於信息產業部電子第二十九所國防科技重點實驗室基金項目? ?合成孔徑雷達接收處理系統及其模擬研究。
  7. An advanced study of the influences for sar image of receiver ' s gain - and - phase errors is presented in this paper

    本文的研究內容以單多通道接收機系統幅相誤差對合成孔徑雷達成像的影響為主。
  8. This charged fiber can be directed or accelerated by electrical forces and then collected in mats or other useful geometrical forms. the diameters of electrospun fibers are in the range of tens of nanometers to several micrometers. in this paper, polyacrylonitrile ( pan ) nanofibers are made by electrospinning pan / dimethylformamide ( dmf ) and pan / dimethylacetamide ( dmac ) with adjusting the main process parameters including electrostatic voltage ( 20 ~ 50kv ), sprinkler aperture ( 0. 5 ~ 0. 8mm ), collection distance ( 15 ~ 25cm ), solution concentration ( 6 wt % - 14 wt % )

    本文主要對聚丙烯腈（ pan ）二甲基甲酰胺（ dmf ） 、 pan二甲基已酰胺（ dmac ）體系進行電紡絲，調節靜電壓（ 20 50kv ） 、噴頭孔徑（ 0 . 5 0 . 8mm ） 、接收距離（ 15 25cm ） 、溶液濃度（ 6wt 14wt ）等過程參數，制得pan納米纖維，纖維平均直徑在200 1000nm ；詳細分析了過程參數對纖維細度、形態等的影響，認為高聚物溶液濃度及靜電壓對纖維細度有決定性影響，其它過程參數如接收距離、噴射孔徑、紡絲溶液溫度、溶液電導率等的調整應以這兩參數為基礎進行。
  9. Interferometric synthetic aperture sonar ( insas ) provides a means of obtaining 3 - dimensional images of scene. three - dimensional information is derived from the phase difference between two ( or several ) complex images of sas taken from separate receiving array across the track

    干涉合成孔徑聲納（ insas ）是在合成孔徑聲納（ sas ）基礎上垂直航跡方向增加一副（或多副）接收基陣，通過比相測高的方法得到場景的高度信息，從而得到場景的三維圖象。
  10. Because the performance of analogue receiver is not good, the gain - and - phase errors of receivers are generated, which badly affected the image of sar

    由於接收機模擬器件的非理想性和非穩定性，接收機對回波信號進行幅相調制，產生幅相誤差，影響合成孔徑雷達的成像結果。
  11. Theoretical and experimental study on power spectrum of atmospheric scintillation with aperture receiving

    孔徑接收下大氣閃爍頻譜的理論和實驗研究
  12. It simulates the incoming waves to the thinned antenna array corresponding to any image scene to be measured

    所以，可以用它來方便可靠地測量綜合孔徑微波輻射計接收機部分的g矩陣。
  13. The above waveforms discussed are to synthesize the wb or uwb with narrow band pulses. assuming the transmitting uwb linear frequency modulation ( chirp ), dechirp processing is introduced, and the method involved to obtain high resolution by reducing the if bandwidth is presented. furthermore, dechirp processing used to sar imaging is discussed, and the processing steps are described

    < wp = 4 >以上研究的兩種信號形式都是通過窄帶子脈沖串相參合成的方法來獲得超寬帶回波信號，本文還探討了去斜率（ dechirp或stretch ）方法，分析了去斜率降低接收機中頻帶寬、 fft獲得目標一維距離像的原理，並探討了線性調頻去斜率合成孔徑雷達成像，給出了具體實現步驟。
  14. The incoming wave is then simulated by computer program to drive each of the digital iq vector modulator. the design and test of the image simulator is presented and followed with test results of g - matrix

    本文詳細介紹了圖像模擬器的研製過程，包括關鍵器件iq矢量調制器的自動標校系統的實現，最後給出了x波段綜合孔徑微波輻射計接收機的測試g矩陣。
  15. The dissertation is focused on uwb waveforms, which achieve uwb return without increasing the instantaneous bandwidth, and signal processing to generating sar images with the desired waveform

    本論文基於當前的硬體水平限制，研究在不增加接收機瞬時帶寬的情況下獲得超寬帶回波的信號形式，探討超寬帶波形在合成孔徑雷達成像中的應用。
  16. In this paper, at first, we analyzed the feasibility of dynamic focusing by interpolation method, and then introduced our particular design of digital - coding emission, dynamic filter, dynamic focusing and digital i / q demodulation in digital front - end based on fpga

    論文首先在理論上分析了內插式數字動態聚焦實現的可行性，然後對數字前端的關鍵技術:數字編碼發射、動態濾波、動態接收聚焦、變跡變孔徑、正交包絡檢波等的fpga實現進行了詳細的闡述並給出了實現方案。
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