脈沖通信 的英文怎麼說

中文拼音 [màichōngtōngxìn]
脈沖通信 英文
impulse signalling
  • : 脈名詞1. (動脈和靜脈的統稱) arteries and veins2. (脈搏的簡稱) pulse 3. (像血管的組織; 連貫成系統的東西) vein
  • : 通量詞(用於動作)
  • 通信 : communication; communicate by letter; correspond
  1. Based on the analysis of the beat frequency signal, the expression of the beat frequency phase is deduced. the expression indicates physics meanings of quantities to be detected and supplies theoretical bases for detection methods. by using two - dimensional fft, the range and velocity information of target is got out from the echo. according to the periodicity range ambiguity of symmetrical pulses in fmpcw, the processing method of sliding time window is used

    過對差頻號進行的分析,得出了差頻相位的具體表達式,表現出了要檢測的各量的物理意義,對檢測的方法提供了理論依據。利用二維fft方法,可以有效地提取回波中目標的距離與速度息。對于fmpcw號由於均勻產生的周期性距離模糊的問題,採取時間波門的處理方法。
  2. That is, vibration caused by the first part of the command signal is canceled by vibration caused by the second part of the command. input shaping is implemented by convolving a sequence of impulses, an input shaper, with any desired command

    輸入成型過把參考輸入號和一系列進行卷積,得到成型輸入號,而成型輸入號作用於控制對象,其中這序列就是輸入成型器。
  3. This paper presents a method that chopping wave is done by switch devices which consist of three - level resistance regulating module and intelligence power module ipm, and which realizes constant - current discharge of storage battery. to achieve the intelligence control of the drive protection and the discharge process of ipm, the paper designs circuit formed by igbt threshold drive pulse pwm signals. ipm fault - blocking protection circuit and microcomputer 80c196. the devices can accurately control the 0 ~ 150a discharge current and the discharge time of the storage battery and calculate the releasing power

    實現蓄電池恆流放電過程智能控制是蓄電池放電裝置發展的必然趨,本文提出了一種過三極電阻調節模塊和由智能功率模塊ipm為開關器件進行斬波從而實現蓄電池恆流放電的方法。為達到對ipm的驅動保護和放電過程的智能控制,文中設計了igbt門極驅動pwm號形成電路和ipm故障封鎖保護電路及由單片機80c196為核心的微機控制器。本裝置能夠對蓄電池進行0 150a放電電流及放電時間的精確控制及釋放容量的計算。
  4. In this paper, the signal processing of sum and difference patterns of amplitude dual - plane monopulse radar and the effect of amplitude - plane non - consistency are analyzed from the coordinates relationship of four - horn antenna at length, and its corresponding simulation is verified, which bring convenience to engineering implementation

    文中從四喇叭天線的位置坐標關系,詳細分析了雙平面振幅和差式單雷達號處理過程以及三道幅相不一致性的影響,並且進行了相應的模擬,為工程實現帶來了很大的便利。
  5. 2. because lightwave systems commonly use fibers with randomly varying birefringence, it is important to study how optical pulses are affected by random birefringence changes

    二、由於在一般光系統中,所採用的光纖的雙折射都是隨機變化的,因此研究光如何受光纖隨機雙折射變化的影響就變得十分重要。
  6. Magnetic sensors are an important branch that can be used to detect the non - electronically characteristics through the magnetic field. the insb magnetoresistance photoelectric sensor in this paper is designed for the fine measurement of the photosignal of the luminant device. through the sensor, the photo - pulse signal is changed to electric pulse which can provides to other second instruments

    過磁場的無接觸特性,對非電量的測量是磁傳感器應用的一個重要方面,本文所研究的銻化銦磁阻型光電傳感器即是針對于發光物體的光號進行高精度無接觸測量的一類傳感器,它可以把光號轉換成電號,供二次儀表使用。
  7. Analysis of the characteristic of monocycle waveform in coal mine uwb communication system

    礦井超寬帶系統中單波形特性分析
  8. The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation

    二、在高頻變壓器原邊,當開關管接收控制列(經調制的spwm波列)導時,在低頻調制號的正半周或負半周內,施加在變壓器繞組上的是同一方向的電壓,變壓器磁芯中的磁可能將級進地逐漸增加,導致磁芯飽和,造成磁偏或單向磁化,導致低頻電號放大失真或由於很大的磁化電流而無法正常工作。
  9. Pulse code modulation communication system hierarchy

    編碼調制系統系列
  10. Transmission formula of interference from mobile base and conservative estimation from pulse radar are presented

    對移動基站產生的干擾作了傳播分析、計算,對雷達干擾作了譜分析及保守計算。
  11. 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;利用雷達收發號,導出了地形跟隨雷達和差接收道的回波號表達式,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。
  12. It can process dead - zone of two pulse signals accurately, whatever their types are, and has such characteristics as excellent performance, good flexibility and high reliability, and its switching frequency and dead - zone time are programmable

    它可以對兩路任意形式的號進行精確的死區處理,且性能優異、靈活性和可靠性高。同時,它具有開關頻率和死區時間可編程等特點,因此,可用在變頻器、 svg等其他電力電子設備。
  13. Micro - controller was programed to measure the width of engine running speed signal successively, via pdiusbd12 these measured data are transmitted to pc, according to some algorithm, for pc program to analyze, process and display angular acceleration, thus diagnose diesel engine

    單片機連續採集轉速號的寬度,同時過pdiusbd12將採集的數據上傳到個人電腦,供電腦按照特定的演算法分析和處理,以進行角加速度波形顯示和柴油機故障診斷。
  14. This circuit board can translate impulse signal outputted from photoelectric sensor into ascii codes and then input them into serial interface of the computer, these ascii codes are ulteriorly displayed and disposed through the cat software

    該電路板可將光電傳感器輸出的號轉換成ascll碼輸入到計算機串o ,進一步過相應的cat軟體進行顯示與數據處理。
  15. In the send site, binary message sequence is modulated between pulse sequences, then took it into wireless channel

    發送端將二進制息序列調制于序列的間隔中,然後送入無線道。
  16. Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation

    在近年來提出的基於質點運動學原理的單站無源定位理論基礎上,本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型,並對它們進行了分析和模擬;第三章分別對利用角度及其變化率息定位和利用離心加速度息定位的可觀測性進行分析並得到了相應的可觀測條件;第四章針對傳統擴展卡爾曼( ekf )方法的缺點,提出了一種修正協方差的擴展卡爾曼濾波( mvefk )方法,並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較;第五章過引入雷達機動目標跟蹤方法和模型,提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法;第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究,提出了幾種高精度測量序列多普勒頻率變化率的方法。
  17. Then we introduce pulse position modulation ( ppm ) using pn code and analysis its multi - access performance, system capacity and power spectrum density. on the basis of those analyses, we study the pulse shape and the anti - jamming ability of the system. at last, multiple access with pseudochaotic time hopping is introduce

    本文首先闡述了uwb脈沖通信系統的基本原理,重點介紹了用偽隨機碼跳時的ppm (位置調制)調制,分析了他的多址性能、系統容量和功率譜密度,在此基礎上研究了改進性能的發射號形狀和系統抗干擾能力,最後介紹了偽混沌碼跳時的多址方式。
  18. The uwb pulse communication is new exploration of radio spectrum, and it resolves the important problem of radio propagation. for its strong support to wireless input, we should study it

    利用uwb脈沖通信是對無線頻譜資源的利用進行新的探索,它解決了困擾傳統無線技術多年的有關傳播方面的重大問題。
  19. In addition, nodes in the system need be synchronized periodically to properly work, where dgps also plays an important role. the 1pps ( one pulse per second ) signal output from dgps provides an easy way to accurately time using an ordinary clock

    此外,系統的各節點需要同步工作,而dgps接收機此時同樣起到了重要的作用,其輸出的秒( 1pps )號使系統只利用一個普的時鐘就實現了高精度的同步。
  20. Ultra - wideband ( uwb ) pulse communication is a very different communication technique from others. it has characteristics of high system capacity, low power spectral densities, exceptional multiparth immunity, simple structure and low probability of detection

    超寬帶( uwb )脈沖通信是一種與其它技術有很大不同的無線技術,它具有容量大、輻射功率密度低,抗多徑干擾,結構簡單和保密性好等優點。
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