接收計數 的英文怎麼說
中文拼音 [jiēshōujìshǔ]
接收計數
英文
count pick up- 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...
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 數 : 數副詞(屢次) frequently; repeatedly
- 接收 : 1 (收受) receive; reception; accept; [電學] receipt; receiving 2 (接管) take over; expropriat...
- 計數 : count; tally; counting計數卡 numbered card
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It further discusses the operation mechanism of the system of agrotechnical diffusion and indicates that the essence of technical diffusion is information diffusion, and the system depends on the course which information flows from the fountainhead to the receivers. and it analyzed the ingredients which influence the information flowing in the system. intruding shannon ’ s information
進一步探討了農業技術擴散系統的運行機制,並指出,技術擴散實質是信息的傳播,是建立在信息從信息源到接收者之間的流動過程,對技術推廣系統中影響信息流動的因素進行分析,引入shannon的信息熵計算方法,對信息接受者的信息接收含量進行測度,通過對所得的數值進行比較,運用定量與定性分析相結合的方法證明技術推廣活動的效率。A wideband digital channelized receiver design
一種寬帶數字通道化接收機的設計In this dissertation, the analog - digital channelized receiver is studied. the optimized system, spectrum reconstructing and accuracy signal frequency estimation algorithms are researched
本文研究了模數混合通道化接收方案,著重研究其優化結構和關鍵技術以及線性調頻信號參數估計演算法。It compute the parameter of deflexion caused by thermal distortion in orbit, deduce the general expression for spreading beam after thermal distortion of reflector and the center deflexion of facula received in ccd. with the method of fixing etc, it put forward the restrain measures adopted accordingly
計算了在軌運行條件下反射鏡面熱變形引起的表面法向偏轉參數,推導了鏡面變形后出射光線的通用表達式以及鏡面變形前後在ccd探測器上的接收光斑中心偏轉量的計算表達式。The system ’ s aim is that the information is expedite in county ’ s, towns ’ and villages ’ public health institutions, that is to say, villages ’ public health institutions can easily transmit information to database, and the departments in charge of public health datum can incept, evaluate and analyse the information transmited, so as to improve working mode, and enhance efficiency
系統的設計目標為,保證農村三級衛生保健網路信息的暢通,即在農村醫療衛生機構能夠輕松地實現信息的上傳,公共衛生信息管理機構能接收上傳的信息,並能實現數據庫的更新,和對上傳數據的評價、分析和輔助決策,從而改善現有工作條件,提高工作效率。The user can input the catenary material needed for its inspection expediently and accurately with the source material input subsystem. the real - time processing subsystem can incept, transform, compose, display and save the data transmitted from the inspection subsystem of the high - speed catenary inspection vehicle. the result analysing subsystem can display, save, contrast, report and mimeograph in many forms the inspection results, according to the many kind of condition choosed by the user
原始資料錄入子系統可以讓用戶直觀、快捷、正確地輸入檢測接觸網所需的接觸網原始資料;檢測數據實時處理子系統能及時、正確地接收、轉換、合成、顯示、存儲前置系統傳送的檢測數據;檢測結果分析子系統能按照用戶選擇的多種條件,以多種方式對檢測結果顯示、存儲、統計、對比、報表、列印和回放。Secondly an infrasonic array was constructed. the array is made up of three detectors with about 1 kilometer distance between each other. the three detectors are connected with telephone line
其次構建次聲陣列,用三個相距約一公里的次聲探頭構成次聲三元接收陣,它們之間用電話線傳輸數據,合理地布置各陣元的位置和方位,三路信號通過採集卡上的不同通道號輸入計算機。Design and realization of a digital - intermediate frequency receiver
一種數字中頻接收機的設計與實現Intermodulation suppression for fh ( frequency hopping ) receiver is designed by selecting the intermediate frequencies and changing group of filters, local oscillation ( lo ) frequency, bandwidth of lo frequency under the condition that receiver configuration, sensitivity, dynamic range, instantaneous bandwidth and precision of frequency measurement are fixed
摘要針對跳頻接收機的體制和靈敏度、動態范圍、瞬時工作帶寬、測頻精度等設計參數,通過改變預選器組成、本振頻率和本振帶寬,分析接收通道的中頻選取原則,以實現跳頻接收機的互調抑制設計。With the established rf front - end system simulation platform, adding the digital modulated baseband signal, this paper simulated the multifold digital modulated signal ’ s transmission, such as 2ask, qpsk, and 16qam. then researches of power compression and phase noise of local oscillation influence the bit error ratio for different modulated system. the designing is satisfied multifold functions request with the high - powered and integrated broadband rf front - end
隨后在建立的寬帶射頻前端通用模擬平臺上,加入基帶數字調制信號,對多種數字調制格式的信號在該通用平臺上的傳輸作了研究,模擬了2ask 、 qpsk和16qam等調制格式信號的發射與接收,研究了功率壓縮和本振相位噪聲對不同調制的誤碼率影響,實現了滿足多種功能要求的寬帶高性能綜合射頻前端的設計。To do the investigating and studying work about the achievements of tackling key problem of the quondam exploration of front - zone of mountain, to analyze and study the applicability about the gathering technology used in the seismic exploration of the complicated construction belt of front - zone of mountainous ; 2. combining the quondam achievements, researching the design method of observation system objective of the complicated construction belt based on seismic - geology model, firstly, building the surface level and deep layer seismic - geology model of complicated construction belt and analyzing the forward model, secondly, designing the observation system aiming at the overthrust nappe structure in section and in area ; 3. aiming at the complicated earth ' s surface condition of front - zone of mountain, how to select the exciting method and the parameter, how to optimize the environment of exciting method and reception, how to pledge the normal combination of the datum of different exciting method ; 4
根據山前帶的地震地質條件特點,本文主要研究了以下幾個方面的內容: 1 、對以往山前帶地震攻關成果開展調研工作,分析研究在山地山前復雜構造帶所採用的地震勘探採集技術的適用性; 2 、研究基於地震地質模型的復雜構造帶觀測系統目標設計方法:如何建立復雜構造帶的表層、深層地震地質模型,利用正演分析目標區的觀測系統;針對逆掩推覆體構造,如何分區分段有針對性設計觀測系統等; 3 、針對復雜地表條件的山地山前帶,如何選擇激發方式、參數,如何優選激發、接收環境,如何保證不同激發方式的資料能正常拼接; 4 、山前帶巨厚礫石區的表層結構調查技術及靜校正方法研究。The second, the main work in the paper is discussed. they are include : the theory and character of electromagnetic leaking from a computer ; the theory of accumulation mean filter and pectination filter ; the analysis of synchronous signal precision, at 10 - 12 second level, for stably intercepting ; the technology requirement of receiver and data acquisition board for clearly displaying the images recovered from the intercepted data
本文從計算機視頻電磁泄漏和數字濾波器兩方面的基本理論出發,詳細論述了計算機視頻信息電磁泄漏的原理及特點,指出視頻泄漏信息的頻譜是以行頻為周期的譜線;分析了重加濾波器和梳狀濾波器的性能;分析了視頻泄漏信息截獲的條件;推導出穩定截獲視頻泄漏信息需要對同步信號的精度控制在皮秒級;論述了清晰再現對接收機和數據採集卡的技術要求。At last, the preamplifier of optical receiver, including the preamplifier ’ s parameter, the selection of circuit type and the design of the preamplifier is discussed
本文還論述了光接收機前置放大器,包括前置放大器的性能參數、電路類型的選擇和前置放大器的設計等。According to statistics canada, 18 to 24 - year olds from the highest income quartile are more than twice as likely to attend university as students from lower - income families
根據加拿大統計數字顯示, 18 - 24歲的孩子中,高收入家庭孩子接受高等教育的人數是低收入家庭孩子的兩倍多。Three finite - difference methods, i. e., stagger grid, implicit and explicit algorithms, are analyzed in detail. multi - grid algorithm is firstly introduced in elastic wave simulation, to solve for the stability problem inherent in stagger grid and implicit algorithm, also for the efficiency problem inherent in explicit algorithm, and the precision, stability and efficiency for simulation of elastic wave arc increased by multi - grid method. phase - delay method is provided to effectively absorb boundary reflection and increase efficiency for wave motion simulation, based on phase delay and amplitude decaying features along wave propagation
在水平分層介質接收函數的波形反演研究的基礎上,本文系統闡述了非均勻介質中彈性波傳播數值模擬常用的三種有限差分方法:顯式差分、隱式差分和交錯網格法,首次將多重網格演算法應用於彈性波方程的數值模擬問題,克服了交錯網格法和顯式差分法穩定性差,以及隱式差分法計算效率低的缺點,大大提高了彈性波數值模擬的精度、穩定性和計算效率。Integrated optomechanical analysis devides rigid - body and aberration, then computes the pv and rms. it provides guidance for design, tolerances allocation and alignment of optomechanical system. finally, abberations are converted to a sort of data form that can be imported by corresponding optical design software to observe their impact upon the optomechanical system imaging performance
光機集成有限元分析方法就是通過分離三種形式的剛體位移和光學表面畸變的pv值和rms值,指導光機系統的設計、誤差分配和裝調,並將數據轉換成光學分析軟體codev可接收的數據形式,對光機系統做整體成像性能評價。The viterbi decoder with hard decision designed by the paper, is aimed at ( 3, 1, 9 ) convolutional coding. the data rate is 9. 6kbps. the data rate received by the rake receiver is spreaded by 127 - bit spread sequences, added pilot signals and modulated by qpsk
該課題所設計viterbi譯碼是針對( 3 , 1 , 9 )卷積碼的硬判決譯碼,數據速率為9 . 6kbps ; rake接收機所接收的數據是擴頻因子為127 、加入導頻且經qpsk調制的擴頻信號,使用verilg硬體描述語言在xilinx公司的ise環境下在用現場可編程門陣列( fpga )來實現viterbi譯碼器和rake接=收機的功能。Secondly, basing on single channel if sr receiver mathematic model, this thesis has designed if sr receiver subsystem and brought forward its design project and system circuit principle diagram, and explained the system working principle. furthermore, this thesis introduces the working principles and respective applications of wideband high - speed adc ad6640, ddc ad6620 and high - speed dsp tms320c6713 according with the if sr receiver subsystem high - speed analog digital conversion department, digital down conversion department and high speed digital signal processing department. thirdly, the thesis emphatically demonstrates the software realization department of the if sr receiver subsystem, which including ad6620 ' s inner parameter software setup, tms320c6713 data transmission and processing and the quadrant demodulation algorithm program realization
其次,基於單通道中頻軟體無線電接收機數學模型,本文設計了中頻( if , intermediatefrequency )軟體無線電接收機子系統,給出了中頻軟體無線電接收機子系統的設計方案和系統電路原理圖,說明了系統工作原理,並分別對應系統中的高速模數轉換部分、數字下變頻部分、基帶數字碩士學位論文軟體無線電理論研究及中頻軟體無線電接收機子系統設計信號處理部分,介紹了高速adcad664o ,數字下變頻器( ddc , digitaldownconverter ) ad6620 ,高速數字信號處理器( dsp , digitalsignalproeessor ) tms320c6713的工作原理,以及它們在中頻軟體無線電接收機子系統中的應用。The council shall, pursuant to sections 14 and 25 ( 3 ) of the ordinance, fix a period to be the financial year for the university, and pursuant to sections 14 and 26 of the ordinance, appoint auditors to audit the statements of accounts and receive the auditors report
根據條例第14條和第25 ( 3 )條,校董會須訂定某段期間為大學財政年度,以及根據條例第14條和第26條,委派核數師審計財務報表以及接收核數師的報告。Based on the coherent reception theory of radio signals and the theory of digital signal processing, the effects of carrier frequency offset, sampling clock offset, and symbol timing offset on ofdm signals are exploited. a series of amendments and new algorithms is derived from the in being algorithms of guard interval based symbol timing and frequency offset estimation, frequency - domain frequency offset, sampling offset, and symbol timing offset estimation
以無線信號的相干接收和數字信號處理理論為基礎,就載波頻偏、采樣鐘偏差和符號定時偏差對ofdm信號的影響進行了分析,對基於保護間隔的符號定時與載波頻偏估計演算法和多種現有頻偏、采樣鐘與符號定時偏差的頻域估計演算法進行了研究,提出了一系列改進措施與新演算法。分享友人