radio frequency method 中文意思是什麼

radio frequency method 解釋
射頻法
  • radio : n. 1. 無線電訊[電報，電話]；無線電，射電。2. 無線電廣播；無線電（廣播）臺。3. 收音機。vt. ,vi. 用無線電傳送[廣播]；（向…）作無線電廣播[傳送]；用X射線拍照；用鐳醫治。
  • 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。
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. The scrambling and descrambling technologies include non - disturbing frequency method, analog base band disturbing method, the radio - frequency signal disturbing method, the digital disturbing method for the analog signal and the digital signal disturbing method, etc. after the introduction a project based on the compression of the rf synchronous information is formulated

    本文綜述了目前常用的幾種主要的電視信號的加解擾技術，如非擾頻加解擾技術、模擬基帶加解擾技術、射頻信號加解擾技術、模擬信號的數字處理加解擾技術以及數字信號加解擾技術等。
  2. Standard test method for measurement of radio frequency induced heating near passive implants during magnetic resonance imaging

    磁共振成像時測量射頻感應加熱接近被動性植入物的標準試驗方法
  3. Recommended practice for an on - site, ad hoc test method for estimating radiated electromagnetic immunity of medical devices to specific radio - frequency transmitters

    醫療設備防特定射頻發射器電磁輻射干擾評估的現場特別試驗方法推薦規程
  4. Measuring method of radio - frequency high potential withstanding voltage for radio - frequency coaxial connectors

    射頻同軸連接器耐射頻高電位電壓測試方法
  5. Then by the method of computer simulation, the following jamming patterns are made quantitative analysis, radio - frequency noise jamming, continuous single tune jamming, continuous noise amplitude - modulated jamming, relayed frequency shift jamming, and the key factor which affect the quality of these jamming patterns

    然後在此基礎上，通過計算機模擬分析，定量地討論了射頻噪聲干擾、連續正弦波干擾、轉發移頻脈沖干擾以及影響它們干擾品質的因素，並以壓制系數為衡量標準，進行了干擾效能分析。
  6. Abstract : this paper analyzes the damage mechanism of eed from the radio frequency, introduces the method of evaluating the electromagnetic ha zards to eed

    文摘:分析了射頻能量對電火工品的危害機制，給出了電火工品電磁危害評估的方法。
  7. Method of insertion - loss measurement for feed - through capacitors and radio - frequency filters

    穿心電容器和射頻濾波器插入損耗的測量方法
  8. Some valuable conclusions are summarized by theoretical analysis and simulation experiments : from the side of signal processing, pulse jamming can be deleted by the method of time - domain sliding window accumulation and can be restored by interpolative prediction. ; gauss white nose can be attenuated while jamming disperse point - target by the method of time - frequency analysis in time - frequency domain. ; radio frequency noise jamming can be deleted by the method of average range frequency spectrum and notching in frequency domain

    通過大量的理論分析和模擬實驗，得到了一批具有一定價值的結論：從信號處理的角度出發，對于脈沖式干擾，能夠運用時域滑動窗口積累的方法去掉，並且通過預測插值得到較好的恢復；對于高斯白噪聲干擾，在時頻變換域內應用時頻分析方法可減小其對分散點目標的干擾；對于射頻噪聲，通過平均距離頻頻法和頻域陷波的方法可以去掉；從改變合成孔徑雷達系統角度出發，類似雙基地雷達能夠避免各種干擾，對發射信號進行調幅，調相以及改變調頻斜率都是較好的抗干擾方法。
  9. According to development of inland and abroad, a new measurement method has been put forward that make use of the periodic characteristic of the phase difference between two arbitrary frequency signals. in the light of lissajous graph, we complete comparison of radio frequency and microwave with 105 rates relationship in technique. on the ground of common characteristic of frequency signals, this method can be developed to comparison of microwave frequency and optical frequency to accomplish optical frequency measurement

    根據國內外的情況，提出一種新的測量方法：即利用任意頻率信號之間都存在著相互相位差周期性變化的現象，根據李沙育圖形的原理，在技術上完成了射頻到微波信號之間成10 ~ 5頻率關系的比對，再根據頻率信號的共性，將此方法推廣到微波到光頻信號之間的比對，以完成對光頻的測量。
  10. The method can measure the following parameters, ( pulse attitude ) pa, ( pulse width ) pw, ( time of approach ) toa, snr, ( radio frequency ) rf, pulse envelope characteristic parameters and intra - pulse modulation parameters with a high precision and a high discrimination

    該演算法能夠分析雷達信號的脈沖脈幅、脈寬、到達時間、信噪比、載頻、脈沖包絡特徵參數和脈內調制特徵參數。
  11. In this work, the influences of fabrication process on microstructure, dielectric properties, ferroelectric properties and pyroelectric properties of plt films have been studied. plt films were prepared on the pt ( 111 ) / ti / sio2 / si ( 100 ) substrates by radio frequency magnetron sputtering method and then annealed by rapid thermal annealing process ( rta ) or conventional furnace annealing process ( cfa ). with the help of atom force microscopy ( afm ), x - ray diffraction ( xrd ) and some other apparatus, it was found that : lower substrate temperature ( ts ) was helpful for plt films to form better surface morphologies. with the increase of substrate temperature, the dielectric constant of plt films increased

    Afm 、 xrd以及性能測試結果表明:較低的基片溫度有利於形成表面均勻緻密的薄膜，且薄膜的表面粗糙度均方根較小;隨著基片溫度的升高，經過快速退火的plt薄膜的介電常數逐漸增大;相比于傳統退火，快速退火縮短了退火時間，提高了薄膜的介電和鐵電性能;快速退火隨著保溫時間的延長，大部分鈣鈦礦結構的特徵峰的峰強增大，半高寬減小，峰形越來越尖銳，但當保溫時間為80s的時候， （ 100 ）和（ 110 ）峰的強度有所下降，因此保溫時間在60s較為適宜。
  12. The designed films of sio2 and sio2 / si are prepared on sample and hemisphere dome of sapphire by radio frequency magnetron reactive sputtering method

    利用射頻磁控反應濺射法，在藍寶石試片和半球形頭罩上制備出所設計的sio _ 2和sio _ 2 si增透膜系。
  13. Cubic nitride boron ( c - bn ) films have been prepared at room temperature ( 25 ) by radio frequency plasma enhanced pulsed laser deposition ( rf - pepld ), assisted with substrate negative bias. in this paper, we primarily studied the effect of laser energy density, radio frequency power, substrate bias and depositing time on the growth of c - bn films, and analyzed the formation process and mechanism of c - bn films deposited by rf - pepld method at room temperature

    本文採用偏壓輔助射頻等離子體增強脈沖激光沉積（ rf - pepld ）方法在常溫下（ 25 ）制備立方氮化硼（ c - bn ）薄膜，初步研究了薄膜沉積參數：激光能量密度、射頻功率、基底負偏壓和鍍膜時間對立方氮化硼薄膜生長的影響，並分析了常溫下用rf - pepld方法沉積立方氮化硼薄膜的形成過程和機理。
  14. Whereafter, the forecast about the trend of the contactless 1c cards - contactless cpu cards is given, and the method to solve the power supply problem for radio frequency cpu cards is analyzed

    然後預測了非接觸式ic卡的發展方向? ?非接觸式cpu卡技術，並分析了解決射頻cpu卡能量供給的方法。
  15. This paper completes the design of sr system with the radio frequency band - pass sampling architecture and uses rapid system protot ype method to realizes sr system in tfs tms320c6711dsk board. this method of sr research is the paper ' s innovation

    本論文實現了基於dsp硬體平臺的射頻直接帶通采樣軟體無線電的系統級設計，並運用快速原型的方法在美國德州儀器公司（ ti ）的tms320c6711dsk板上實現基於dsp平臺的軟體無線電系統，這主要是一種軟體無線電技術研究方法上的創新。
  16. ( 2 ) a new digital frequency - hopping communication system based on cipher - quasi - chaotic sequence is proposed, which combines the cryptography and frequency - hopping technology. the system ' s protocol, base - band signal processing and modulation / demodulation algorithms of the radio - frequency part are designed, and the hardware experiment conducted on a prototype of the system show that the system functions well. the finite precision problem arising while taking use of chaotic signal to generate pseudo - random sequence is studied and the anti - tracking capability of the cipher - quasi - chaotic sequence is studied with the volterra - tls method proposed in this dissertation

    （ 2提出一種新的基於密碼準混飩序列的密碼與跳頻技術相結合的跳頻通信系統，並且進行了協議部分、拂信號處聊分、射頻調制解調演算法部分的模擬研究和系統的硬體實驗研究；研究了利用混飩信號產生偽隨機序列的有限精度實現問題，利用本文提出的m業肚m 113方法對密碼準混飩序列產生的跳頻碼的抗鵬干擾能力進行了模擬實驗研究。
  17. Method of insertion loss measurement for radio frequency filters

    射頻濾波器插入損耗的測量方法。
  18. By using a new optical input power level detection and signal treatment method to control the gain of the receiver and keep its output level within the required range, a novel feedforward agc optical receiver without radio frequency feedback circuits is realized

    我們採用一種入射光功率電平檢測與處理的新方法，對模擬光接收機的增益進行控制，將接收機輸出電平控制在要求的范圍內，實現了一種新型的無射頻反饋電路的自動增益控制光接收機。
  19. At the same time, from the method of specific realization, we used the software of advanced design system ( ads ) v2002 for the agilent company to design and emulate the radio frequency circuits. it can greatly reduce the difficulty of debugging the radio frequency circuits

    同時，在具體的設計實現上，我們藉助於美國agilent公司的advanceddesignsystem （ ads ） v2002軟體進行射頻電路設計模擬，極大地簡化了射頻電路的調試難度。
  20. In order to measure the condition of the tire in real time, mcu, digital thermometer, and wireless radio frequency technology is used in this new system. multi - sensor technology is introduced this system, to gain more information of the tire. hardware and software anti emi method is used to enhance the system ' s reliability

    系統採用多傳感器獲取數據，提高了系統處理數據的可信度，為系統的正常可靠運行提供了技術支持；各種軟硬體抗干擾的設計以及軟體的結構化設計，為系統安全、可靠運行與維護提供了保障。
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