transmitting frequency 中文意思是什麼
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In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab
針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。 -
Practice for determining safe distances from radio frequency transmitting antennas when using electric blasting caps during explosive operations
爆破操作中使用電起爆雷管時射頻發射天線安全距離測定的實施規范 -
Recommended practice for determining safe distances from radio frequency transmitting antennas when using electric blasting caps during explosive operations
爆破操作中使用電起爆引線時射頻發射天線安全距離測定的推薦規范 -
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。 -
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。 -
It introduces the phase noise measurement method of hf radar ' s transmitting signal, especially the measurement method of low phase noise which is close - in to carrier frequency
指出了在高頻雷達發射信號相位噪聲的測量，特別是近載頻低相位噪聲的測量。 -
It mainly includes two parts : the frequency offset caused by the difference of the mobile equipment ’ s transmitting frequency and the nodeb ’ s receiving frequency ; the frequency offset caused by the vehicle of the mobile equipment, which is called doppler shift. accurate frequency offset estimation and compensation is of importance for demodulation
它主要由兩部分構成:由於nodeb （基站）和移動臺晶振本振頻率的不同而產生頻偏;由於移動臺運動產生多普勒效應，引起的多普勒頻偏，在信號功率譜上表現為多普勒頻譜擴展（以後簡稱多普勒擴展） 。 -
The digital base - band cdma transmitting and receiving scheme is put forward. the scheme uses a technique called as zero medium frequency without the need of pn codes synchronously are resumed
提出了具有免偽碼同步恢復、免載波同步提取、免位同步的零中頻cdma數字基帶發送、接收方案。 -
Aiming to achieve mini - type designment, and transmitting farther on the setting frequency band, direct frequency modulation is chosen after comparing the advantage of amplitude modulation with that of frequency modulation
為了實現微小型化的設計，並且使系統在設定的傳輸頻段上傳輸距離較遠，在比較調幅與調頻的優缺點后，我們選擇了直接調頻的調制方式。 -
Measurements of the electrical properties of transmitting tubes - measuring methods of high frequency loss for interelectrode insulators
發射管電性能測試方法電極間絕緣體高頻損耗的測試方法 -
According to the test conditions, the double polarity inputting mode is adopted in the circuit of voltage - frequency converting part ; storage batteries are used in the optical emission part of optical fibre isolating and transmitting device, that can guarantee isolation between the main circuit and the testing system ; the 89c51 singlechip is used in the singlechip testing - controlling unit, the peripheral circuits are extended, data are transmitted through the serial port in this part ; the p opular software delphi5. 0 is used in the pc part, the communication between singlechip and pc by serial port, plotting of current wave, regulation of data ; the optical - electrical isolating and triggering are used in the controlling part, this can guarantee the veracity and reliability of breakers triggered, this triggering mode is also used in the triggering of the main closing breaker, the tested breaker and the assistant breaker, the triggering signals are sent out by a singlechip
壓頻轉換部分電路中根據實際情況採用了雙極性輸入方式；光纖隔離傳輸裝置的光發射部分電源採用了蓄電池供電，確保了主迴路與測試迴路的完全隔離；單片機測控部分採用了89c51單片機，擴充了外圍電路，通過串口向pc機傳送數據； pc機與單片機之間的串口通訊、波形繪制、數據管理等都採用了軟體delphi5 . 0編寫。該測試系統中預留了輸出口，可以對合成迴路中的主合閘開關、被試開關、輔助開關進行觸發，信號由單片機發出，控制部分採用了光電耦合隔離觸發的方法。軟體設計主要集中在對電流信號的數據採集、數據處理、數據傳送、人機界面、波形繪制和數據管理，軟體部分又可分為單片機和pc機程序設計兩大部分。 -
In the computer - testing system of current signal measurement of current - source in synthetic circuit, the following contents are included, such as voltage - frequency converting technique, optical fibre isolating and transmitting technique, singlechip testing and controlling, plotting and printing of sampled data on pc ( personal computer )
電流源電流信號的計算機測試系統包括傳感元件部分、壓頻轉換部分、光纖隔離傳輸部分、單片機測控部分以及pc機對採集數據的波形繪制與列印部分。 -
For recent years, adsl has world widely employed and widely used in many aspects such as vod, remote medical treatment and e - shopping etc. but we noticed that the traditional telephone networks are designed for the transmission of low frequency signals, and the adsl ' s frequency rang is from 0 to 1. 104mhz, so we must confront the signal attenuation, the loop line noise impairments, the crosstalk interferences, the bridge tap reflections and the rf disturbances problems and many other problems when transmitting the adsl signals one the telephone networks
近幾年來， adsl在世界范圍內得到充分的使用，廣泛應用於視頻點播、遠程醫療、網上購物等各個方面。但是由於電話線網路是專門為傳輸低頻信號而設計，而adsl的頻譜范圍在0 1 . 104mhz內，因此在傳輸adsl信號時，面臨著信號衰減、線路噪聲、串音干擾、橋接抽頭反射和射頻干擾等等多方面的問題，這就要求在adsl開通之前對線路進行一系列的測試。 -
Transmitting frequency deviation of high frequency
高頻制頻率時的發射頻偏 -
Also the external field can modulate wave - transmitting strength. at the range from 8 to 9 ghz, the minimum transmissivity value existed as to batio3 erf ; the frequency where the minimum value existed was tend to the lower frequency under the external field
4 .對于欽酸鋇電流變液，在8一gg頻段范圍內，微波透過率存在最小值，而且隨電場強度增加透過率最小值點向低頻方向移動。 -
Furthermore, because the average power of transmitting lfmcw signal is the minimum peak power and the frequency diversity is high, it could not be detected easily
其次，由於lfmcw雷達發射其所需的平均功率是最小的峰值功率，並具有很高的頻率分集性，因此不易被偵察設備探測。 -
In addition, there are asset of researches on the security of the remote desktop control system, and a lot of solution related on the remote desktop control system in the environment of network - centric computing ( ncc ) based on " host / thin - client ". it is necessary to realize the work - model of server sharing resource, and it also necessary to decrease the transmitting data frequency, to improve the quality of pictures transmission of server. so that client can monitor the remote desktop control system
在「服務器/瘦客戶端」結構的集中式計算環境下開發遠程控制軟體，不但要實現客戶端共享服務器端系統資源的集中式計算工作模式，還要盡量降低數據傳輸時所佔用的網路帶寬，最終達到提高服務器端系統的圖像傳輸質量，使客戶端能夠對遠程服務器端系統進行有效實時監控的目的。 -
Voice - frequency transmitting amplifier
音頻發射放大器 -
Transmitting frequency range
發射頻率范圍 -
Methods of measurement for transmitting frequency
發射頻率的測量方法
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