普通信號 的英文怎麼說
中文拼音 [pǔtōngxìnháo]
普通信號
英文
general signal-
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除內有私人訊息的普通及掛號航空信件外,所有郵政服務暫時停止。Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground
針對存在的缺點,本文提出了一種應用於激光多普勒測速的高精度信號處理技術,即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜,搜索其譜峰值頻率,接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析,再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析,從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來,充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率,通過goertzel演算法獲得分析頻帶的高解析度頻譜,然後通過能量重心校正演算法對細化后的頻譜進行高精度校正,這樣不僅保證了演算法的高效性,而且大大提高了分析的精度。General lighting service lamps ; round bulb signal lamps, pigmy signal lamps ; restricted temperature design
普通照明燈.圓形燈泡信號燈微型信號燈.限制溫度設The amazing character of the quantum capacity of gaussian channel is that planck constant h takes over the place of input power restriction of classical capacity
高斯通道量子容量的迷人特徵是普朗克常數h取代了經典容量中輸入信號功率限制條件的位置。Based on an analysis of uhf ( ultra - high - frequency ) characteristic of pd ( partial discharge ) in power transformer, using mixing technique, a signal disposal cell has been devised for the sake of facilitating common data sampling card
摘要在分析了電力變壓器局部放電的超高頻特性的基礎上,利用混頻技術,設計了局部放電超高頻信號的信號調理單元,方便普通數字採集卡採集。This research offers the technical scheme of detecting ulf absolute vibratory signal by the normal electromagnetism rate transducer
本研究提出了一種利用普通的電磁式速度傳感器檢測超低頻絕對振動信號的技術方案。The apparatus, with the specialities such as miniature, automation, flexibility, and individual - computer managing has become the developing trendof the testing equipment today. based on analysis of the characteristic and the system structure of the visual instrument, the paper has studied the design idea of it, put forward the exploiting methods of the visual instrument based on the object - oriented technique, exoatiated on the technique kernel of design the visual instrument under windows environment, designed a typical visual instrument " vis - 1 signal - analyzing and wave - displaying system ", which integrates multi - function instruments such as general oscillograph and ulf oscillograph real - time signal recorder wave and frequency - pedigree analysis instrument. the system has more excellent functions and characteristics than traditional instruments
本文研究了虛擬儀器系統的設計思想,在分析虛擬儀器系統的特點及其體系結構的基礎上,提出了基於面向對象技術的虛擬儀器系統開發方法;闡述了windows環境下實現虛擬儀器的技術要點;實現了一個典型的虛擬儀器系統「 vis ? 1信號示波分析系統」 ,該系統集普通示波器、超低頻示波器、存儲示波器、瞬態信號記錄儀、波形及頻譜分析儀等多種儀器功能於一身,並具有許多傳統儀器難以達到的優越功能和性能。The special relationship among signal bandwidth, center frequency and imaging squint angle in the range - doppler imaging algorithm and other methods is also presented in the chapter 3
本章通過分析提出了距離多普勒等成像方法中信號帶寬、工作頻率和成像斜角之間存在的特定關系。Isar transmits wide bandwidth signals to obtain high range resolution. the cross - range resolution is obtained by the doppler frequency information of the target ’ s rotation
逆合成孔徑雷達通過發射大帶寬信號獲得好的距離解析度,利用目標相對于雷達的轉動產生多普勒頻率梯度來獲取好的方位向分辨力。A common data acquisition card can be used on laboratory virtual instrument engineering workbench through designing the external interface between labview and common date acquisition card on the software design ; used the idea of the double buffer and direct memory access, a real time data acquisition and logging about the succession, big capacitance leakage current is realized ; a digital filter is designed to filter high frequency signals
在軟體設計上,設計了與普通數據採集卡的介面,實現了在labview環境中應用普通數據採集卡的功能;運用雙緩沖和內存直接映射的設計方法實現對連續、大容量泄漏電流信號的實時採集和存儲;設計了數字濾波器對採集后的原始數據濾去高頻干擾。Overtaking. besides, this thesis also presents fuzzy - based multi - phase intelligent signal control strategy according to the deficiencies of present traffic signal control system and the research of fuzzy traffic signal control, this signal control strategy focuses on the single junction signal control problem, though imitating the ways of traffic police managing the traffic, it has the ability of intelligent phase changing and controlling in the light of the real traffic flow, the simulation result shows : in two - and multi - phase conditions, the average vehicle delay is reduced by 15 % and by 27 % compared with the general fuzzy control method
此外,本文還根據目前交通信號控制方法的不足以及現有的運用模糊控制技術進行交通信號控制研究上的欠缺,提出了基於模糊控制的多相位智能擬人信號控制策略,該控制策略以單交叉口的信號控制為研究對象,通過模擬交通指揮者實際進行交通控制的特點,使控制系統能實時根據各相位車輛的多少進行信號的智能控制,模擬結果表明:與普通模糊交通信號控制方法相比,在兩相位與多相位的模式中可分別減小平均停車延誤平均15和27 。Do you want to send it by ordinary or registered mail
您是要寄普通信還是掛號信?A special hand - back service will be provided on january 17, 2003 at the new office, whereby official and privately made unregistered covers with full postage prepaid and bearing the words " first day cover " and a local address will be accepted and impressed with the normal post office datestamp or the philatelic pictorial postmark, depending on the customers choice and handed back to them
此外,新局亦會在開幕當日發售紀念封,並提供即時蓋印服務。凡已付足郵資、註明首日封字樣而寫上本港地址的正式及自製非掛號信封,均可加蓋郵局普通郵戳或集郵局圖案郵戳,並即時取回。A special hand - back service will be provided on 4 february 2002 at the new office, whereby official and privately made unregistered covers with full postage prepaid and bearing the words " first day cover " and a local address will be accepted and impressed with the normal datestamp of the office and handed back to the customer
天悅郵政局會于啟用當日提供特別的即時蓋印服務。凡已付足郵資、註明首日封字樣並寫上本地地址的正式和自製非掛號信封,均可交予櫃位職員加蓋郵局普通郵戳,隨即取回。A special hand - back service will also be provided at the new office on monday, 1 august 2005, whereby official and privately made unregistered covers with full postage prepaid and bearing a " first day " indication and a local address will be accepted and impressed with the normal post office datestamp at the counter and handed back to customers
新郵政局亦會在八月一日提供即時人手蓋印服務。凡已付足郵資、註明首日字樣及本港地址的正式及自製非掛號信封,均可加蓋郵局普通郵戳,並可即時取回。The data analysis has to compensate for the doppler shift to make any signal as sinusoidal as possible, which helps pull it out of the noise ( with something based on a fourier transform )
數據分析中比較對多普勒偏移進行補償以使信號盡可能地接近正弦曲線,以方便從噪音中提取真正的信號(通過傅立葉變換) 。Finally designs the interface cirvuit with the master control system. the analog singal is isolated by linear optical isolator and the digital signal is isolated by common optical isolator
設計了與主控系統的介面隔離電路,採用線性光耦對模擬信號進行隔離,普通光耦對數字信號進行隔離。Currently warsony corporation has multiple lighting source and lighting systematic product, which provides modern life with the most advanced power reduction and environmental protection technology, and pioneering environmental protection lighting fashion all over china. main products include solar energy plate with high conversion ratio, high - efficient controller and commutator etc
公司的主要產品有:高轉換率太陽能板膠體蓄電池高效控制器逆變器大功率led等,產品運用廣泛,已普遍用於太陽能戶外照明太陽能廣告箱牌太陽能蓄電房子太陽能交通信號及監控系統及各類太陽能小禮品等。The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided
論文的主要工作包括四部分:第一部分研究了脈沖多普勒雷達導引頭的信號建模問題,建立了雷達信號模型,主要包括:發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式,建立了信號和數據處理模型,主要包括:加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等,然後給出了信號處理流程。However, the instantaneous bandwidth of signals is restricted for general phased array because of its transition time and aperture effect
但是,基於移相器的普通相控陣天線在進行寬帶寬角掃描時,由於渡越時間和孔徑效應的影響,使信號的瞬時帶寬受限。分享友人