transmitter frequency 中文意思是什麼

transmitter frequency 解釋
發射戶率
  • transmitter : n 傳送者；傳達者；寄交者；傳導物；遺傳者；【無線電】發送機；發射機；發報機；送話機，話筒；【火箭...
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  1. This has since been confirmed by russian sources ; the transmitter consists of two swept - frequency generators of sinusoidal voltage and two parallel horizontal grounded antennas, each about 60 km long

    這一點被來自俄方的消息所證實；發射機有兩個掃頻發生器，產生正弦波，同時有兩幅相互平行的水平地面天線，每個天線有60千米長。
  2. Jhs - d shift frequency aptitude transmitter mixer : system introduction

    海之升數字移頻擴聲系統簡介：
  3. Middle conference room six microphone : jhs - d shift frequency aptitude transmitter mixer 1 6 set conference microphone hc - 808 bigger conference room 12 set microphone jhs - d shift frequency aptitude transmitter mixer 2 12 set conference microphone hc - 808

    中小會議室六支麥克風: jhs - d型移頻智能話筒混音器1臺6支會議麥克風hc - 808
  4. Khz high pulse repetition frequency multibeam klystron transmitter

    高重頻多注速調管發射機110
  5. These high-frequency shout waves are only able to travel in straight paths from the transmitter.

    這些高頻短波從發射機發出后只能從直線傳播。
  6. The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering

    本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。
  7. With the objective of developing distributed simulation system of frequency hopping ultrashort communication countermeasure system, the federation architecture and the complex envelop simulation block diagrams of fr transmitter and receiver are presented at first

    摘要以建立超短波跳頻通信對抗分散式模擬系統為目的，首先給出了聯邦的體系結構及跳頻發信機、接收機成員的復包絡模擬框圖。
  8. The constant frequency federation consists of five federates, which are communication transmitter, communication receiver, reconnaissance receiver, directionfinding receiver and jammer. all the federates adopt complex envelop simulation models

    定頻通信對抗聯邦包含五個成員:通信發信機、通信接收機、偵察接收機、測向接收機和干擾機成員，各成員均採用復包絡模擬模型。
  9. The major job is manufactured a transmitter, which has three upmixer channels. its function is to up convert the signals from c - band to ka - band. the input local oscillator is provided by a low frequency crystal oscillator which has a good performance of phase noise, through 512 times multiply to ka band. this sysetem is used in the laboratory as transmitter source of the fuze, for the multidimensional objects in practise, which lead to the complexity of the reflect signal, so the amplitude, frequency and the phase of the transmit signals both have a key role in dealing with the reflection signals. therefore, this system requires for both the coherence of the single channel ’ s amplitude, phase and multi channels

    本文的主要工作是應用戶要求製作一具有三發射通道的上變頻系統，可以將c波段的微波信號上變頻到ka波段的毫米波信號。系統的本振輸入基頻由一相位噪聲非常好的低頻率晶振提供，經過512次的倍頻放大至ka波段。本系統作為實驗室中引信的發射源，由於目標反射信號具有時變的多維性，反射信號變得極為復雜，在信號處理時，不僅信號幅值、頻率有決定意義而且相位關系也很有決定意義。
  10. Transmitter, receiver and ground communication equipment used in domestic satellite communication earth stations - technical requirements - part 3 : equipment for television frequency modulation

    國內衛星通信地球站發射接收和地面通信設備技術要求第3部分:電視調頻設備
  11. On the basis of this theory, the applications of the sdr structure of wideband and bandpass sampling in if ( intermediate frequency ) in flight test were offered : increase the sampling in if ( intermediate frequency ) in flight test were offered : increase the capacity of the transmitter and the terminal receiver channels without changing the apparatus of original system and on the conditions of obeying the standard remote sensing

    首先對軟體無線電的組成結構和飛行測試中實際使用的通道進行了闡述，在此基礎上提出了基於寬帶中頻帶通采樣軟體無線電結構在飛行遙測測試中的應用，在不改變原系統設備的情況下，在遵守遙測標準的前提下，提出增加機載發射機和接收機通道容量的設計方案。
  12. 3. with comprehensive improvement of transponder including structural adjustment to lna ; optimization of ( phase locked loop ) pll filter ; structural adjustment to the transmitter and phase error adjustment to the intermediate frequency demodulation circuit, we have successfully enhanced sensitivity, expanded dynamic range, increased transmitting power and improved the spectrum purity ; decreased capture time for pll ; improved the signal quality after demodulation ; reduced its volume and power consumption. 4

    3 、對通信機的全面改進，包括lna結構的調整、鎖相環環路濾波器的優化、發射部分結構的調整以及中頻解調電路的相差調整，提高了系統的接收靈敏度、改善了本振的頻譜純度、減少了鎖相環的鎖定時間、使中頻解調后的信號質量大為提高，同時還減少了體積、節約了系統的功耗。
  13. On the base of summarizing and reference to the achievement of uhf complete solid - state high - frequency power amplifier abroad, the author have made a deep research in uhf 10kw electron tube tv transmitter power amplifiers which are widely used inland, and asked for ideas of a lot of engineers of chongqing tv transmitting station, brought forward a practicable solidification scheme under the guidance of prof. gao chao and prof. guoyongcai, and made a successful practice at chongqing tv transmitting station

    筆者在總結和借鑒國內外有關uhf全固態電視發射機高頻線性功率放大器研究成果的基礎上，對目前國內電視發射臺普遍採用的uhf10kw電子管電視發射機高頻線性功率放大器進行了深入研究，並廣泛徵求重慶電視發射臺工程師的意見，在重慶大學高潮教授和郭永彩教授的指導下，提出了切實可行的固態化改造方案，並在重慶電視發射臺實踐成功。
  14. For example, carrier frequency offsets, which are caused by the inherent instabilities of the transmitter and receiver carrier frequency oscillators, can lead to severe system degradation due to inter - carrier interference ( ici ). symbol timing synchronization must also be achieved in order to avoid inter - symbol interference ( isi )

    其載波頻率誤差會引入子通道之間的干擾（ ici ） ，而幀同步的誤差會引入符號間干擾（ isi ） ，同時還會對通道估計帶來嚴重的影響。
  15. Our object is an intermediate frequency modem of a software defined radio transmitter - receiver of multi - service, multi - modulationmode and multi - processdatarate. first, related software defined radio theory is introduced ; later, channels of transmitter - receiver are designed with consideration of data format, modulation, fec, interwaving. and scrambling ; emphasis is placed on theory and implementation of an audio compression algorithm cvsd ( continuous variable slope delta modulation ) and a fec technique convolutional coding - decoding

    本文首先介紹了相關的軟體無線電理論；然後完成了包括數據格式，調制方式，糾錯碼方式，交織器和擾碼器等部分的中頻數據機通道設計；接著著重介紹了系統中使用的音頻壓縮演算法cvsd （連續可變斜率增量調制）的原理和實現，以及作為前向糾錯碼的卷積碼編碼理論和編解碼的高效實現。
  16. This paper ' s study is focused on the principle of bistatic sar on the basis of giving a brief introduction of sar principle, including azimuth resolution, mapping width, focusing deepness, pulse repetition frequency limitation and radar equation etc. then the paper studies the special form of bistatic sar with stationary transmitter

    在簡要介紹了合成孔徑雷達的成像原理后，本文著重從原理方面對雙站sar進行了分析，討論雙站sar的方位向解析度，測繪帶寬，聚焦深度，脈沖重復頻率限制，雷達方程等問題，然後對發射機固定的雙站sar這種特殊的雙站sar模式進行分析。
  17. In this paper, for 2 ~ 2000mhz broadband rf front - end, using subsection processing fixed intermediate frequency superheterodyne architecture, and combining with the actual component ’ s level, a broadband rf front - end system simulation platform is presented, which provided the universal, standardization, and modularization of transmitter and receiver

    本文針對頻率范圍2 2000mhz的寬帶射頻前端，採用分段處理的固定中頻超外差結構，並結合目前的器件水平，建立了一個通用化、標準化、模塊化的寬頻帶射頻前端發射機和接收機系統模擬平臺。
  18. A large amount of experience data accumulated through long term operation is introduced. combined with the definition of relative requirements, the choosing and definition of operation index of high - frequency channels specially used for protection of hubei electric power network are discussed and elaborated through calculation and analysis such as input impedance and channel impedance of transmitter, sensitive voltage of received signal, redundancy of received signal, warning of channel redundancy and warning of channel faults etc

    引用了長期運行中積累的大量經驗數據，通過計算分析，結合有關規程規定，探討和闡述了湖北電網繼電保護專用高頻通道諸如收信機輸入阻抗及通道阻抗、收信靈敏電平、收信裕度、通道裕度告警、通道異常告警等運行指標的選取和確定。
  19. This paper studies the characteristic of scatter from moving target in the situation of bistatic sar with stationary transmitter. the wvd method is used in the paper to estimate the doppler frequency parameter of the moving targets ; the wvd - radon method is used to restrain the cross - term. then we can use the result to adjust the parameter of the filter, and to achieve the moving targets imaging of bistatic sar

    本文分析了發射機固定的雙站sar情況下的運動目標回波信號模型，應用wvd變換對發射機固定的雙站sar回波的多普勒信號參數進行估計，並採用wvd - radon變換來抑制wvd的交叉項，以調整濾波器參數，實現發射機固定的雙站sar對運動目標聚焦成像。
  20. At the mean time, the building of the system is the fastest and the best convenience. the scdma making use of radio connection technology of scdma have advantage of high radio frequency ratio, good secrecy and long distance of transport under lower transmitter frequency

    Scdma無線接入通信系統採用同步碼分多址（ scdma ）無線接入技術，具有無線頻譜利用率高、通信保密性好和低發射功率下較遠的通信距離等技術優勢，是一種優秀的無線接入通信技術。
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