高頻頻帶 的英文怎麼說

中文拼音 [gāobīnbīndài]
高頻頻帶 英文
high frequency band
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 頻頻 : again and again; repeatedly
  1. Based on the real situation of submarine and antisubmarine warfare ( asw ), according to the classical design theory of transducer or transducer array, a sonar will be researched and made, which has the feature of more wider bandwidth, more lower operating frequency, more lager radiation acoustic power, more farther operating distance, more higher researching efficiency and more higher directive accuracy

    本文根據現代潛戰和反潛戰（ asw ）的實際情況，按照經典的換能器和基陣的設計理論，研製聲吶，旨在擴展其頻帶寬度、降低其工作頻率、增大其發射功率、擴大其作用距離以及提高其搜索效率和定向準確度。
  2. In this study, the stem segments of new shoot with axillary buds of well - growth tetraploid black locust trees were used as explants. the effects of different basic mediums, different hormone kinds and their concentrations ratios, different sucrose concentrations on calli induction, buds differentiation and rooting in the process of establishment of high frequency regeneration system of tetraploid black locust were studied. on the base of high frequency regeneration system, the effects of various factors on transformation efficiency of badh mediated by agrobacterium tumefaciens were discussed in the light of gus histochemical assays

    本實驗首先以生長良好的四倍體刺槐優株上當年生新梢的帶腋芽莖段為外植體，研究了在四倍體刺槐高頻再生體系的建立過程中不同基本培養基、不同激素濃度及其配比、不同蔗糖濃度對愈傷組織的誘導、芽的分化及生根的影響；然後在得到高頻再生體系的基礎上，通過農桿菌介導法轉化甜菜堿醛脫氫酶（ badh ）基因，以gus染色組織分析為依據探討了影響轉化效率的各種因素，建立了高效、可重復的基因轉化體系，為四倍體刺槐目的基因的導入打下了基礎。
  3. 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。
  4. Compared with traditional mechanical and optic gyros, hrg has such advantages as no high speed circumvolving or moving parts in structure, no warm - up time and short start - up time, wide signal band in frequency, low excursion noises, great endurance in over loading, nuclear radiation and short time power off, small bulk, light weight, low power cost and long life, which is suitable for space applications

    與傳統的機械陀螺和光學陀螺相比，半球諧振陀螺具有如下優勢:結構上無高速轉子、無活動部件;不需預熱，啟動時間短;信號頻帶寬，漂移噪聲低;能承受大的機動過載;抗核輻射，並可經受短時間電源中斷的影響;體積小，重量輕，功耗低，壽命長，非常適合空間應用。
  5. Mattias lampe, ronghong jin, junping geng, xianguang guo : invention patent “ one kind of directional / omni - directional antenna ” ( submitted )

    丁敏，金榮洪，楊熹，耿軍平，勞佳，吳琦：發明專利「甚高頻超寬帶天線設計」 （已提交） 。
  6. 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。
  7. Another attribute is the flux or radiant power that can be delivered in that narrow frequency band.

    另一個性質就是在這樣窄的頻帶內可以給出很高的光通量或輻射功率。
  8. High frequency radar is also a high frequency ground wave super resolution radar used on the seaside, and meantime it is one of projects of national 211 for building subject. this paper based on high frequency radar and modern signal processing describes the component of the high frequency radar on function and hardware. the signal that the radar system used mostly decides the capability and the complex of the radar

    雷達系統所用的信號體制、信號形式決定了在很大程度上決定了雷達的性能指標，雷達系統的復雜度，本文主要研究基於軟體高頻雷達的多體制信號的數字化產生與接收，目的在於產生一種或者多種能夠軟體高頻雷達所適用的信號，並且這種信號不會給小型化的系統處理帶來過高復雜性。
  9. Accurate simulation of switch circuit is needed in pin switch design, while limited by assembling techniques, serial resonance and channel inter - coupling exist in the common joint that bring a lot of difficulties for simulation. 2 - dementions simulation software can not establish accurate circuit mode for pin diode switch which gives simulation error, and it costs much more time with 3 - dementation simulation software, which is not applicable in practice for pin switch design

    Pin開關的設計中需要對開關電路進行準確模擬，然而高頻、寬帶、多擲pin開關受裝配工藝的限制，開關公共結點附近存在著串聯諧振和相互耦合，給pin開關的準確模擬帶來了困難:二維模擬軟體很難對電路進行準確建模，模擬誤差較大;三維模擬軟體耗時過長，難以在實際設計中應用。
  10. Switching power amplifier is popularly used because of its virtues of low power losses, high efficiency and high frequency bandwidth

    開關型功率放大器因其損耗小、效率高、通頻帶寬等優點，廣泛取代了早期低效率的線性功放，成為目前功率放大器研究的重點。
  11. Pin diode switch is a kind of widely used microwave semiconductor control device. high frequency, broadband, multi through switch are the places where design difficulties lie

    Pin開關是一種廣泛採用的微波半導體控制器件，高頻、寬帶、多擲一直是其設計難點所在。
  12. Rising computer power has recently enabled wireless devices operating in these upper bands to offer gigabits per second of instantaneous bandwidth within very small areas, or “ picocells, ” of coverage

    電腦運算效能提高，也讓無線裝置可在這些較高的頻帶運作，在非常小的區域（即所謂的微微細胞）內，提供每秒數十億位元的短時間頻寬。
  13. The main content is position matrix is set to record the location of wavelet coefficients, scanning the important wavelet coefficients first by using ordered quad - tree, and encoding the sign by using run length coding as well

    主要思想是：設立位置矩陣記錄子帶的位置信息，對高頻子帶內小波系數進行掃描排序形成有序四叉樹，對輸出的符號串採取行程編碼。
  14. Adaptive run length coding explores the residual redundancy of the high frequency coefficients in the transform domain. hereby, an embedded image coding algorithm based on binary description run length ( bdrl ) is brought forward

    對高頻子帶採用自適應的遊程編碼處理，提出一種二進制描述遊程的嵌入式圖像編碼演算法（ bdrl ） 。
  15. This paper introduces the principle of phase - locked loop and analyzes the performance characteristics of pll chip adf4106 which has wide bandwidth and low power consumption. and then introduces the design method of a kind of low phase noise frequency synthesizers which uses single chip processor to control the chip. the application supplies a good design method for high frequency synthesizer

    介紹了鎖相環路的工作原理，分析了低功耗寬帶集成鎖相環晶元adf4106的工作特性，並介紹了一種利用單片機控制該晶元的低相位噪聲頻率合成器的設計方法，討論了環路濾波器的設計，為高頻頻率合成器的設計提供了很好的思路。
  16. The blocking artifacts in space domain display horizontal line - shape effect, vertical line - shape effect and grid - shape effect in high frequency sub - bands of wavelet domain

    圖像空域中的塊效應，在小波域高頻子帶表現為平行線效應、豎直線效應或者網格效應。
  17. Very - high frequency band

    甚高頻頻帶
  18. Ofdm signals have efficient spectral bandwidth, and the performance of the ofdm system against multipath fading is better than that of the single carrier modulation system

    此項技術具有較高的頻帶利用率，並且與單載波調制技術相比可以更為有效的對抗無線通道中的多徑干擾。
  19. In the highly crowded hf band, available continuous bandwidth is very narrow, this threaten the viability of hf radar based on the continuous spectra signal system seriously

    在擁擠的高頻頻段，可用的連續帶寬比較窄，基於連續譜信號體制的高頻雷達的生存能力受到嚴重威脅。
  20. Hf is improved as there is no real capacitance due to the choke. )

    高頻頻響也會提升是因為沒有了扼流圈帶來的分佈電容。 ）
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