寬頻譜信號 的英文怎麼說

中文拼音 [kuānbīnpǔxìnháo]
寬頻譜信號 英文
wide spectrum signal
  • 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...
  • 譜 : Ⅰ名詞[書面語]1 （按類別或系統編成的書或冊子等） table; chart; register 2 （指導練習的格式或圖形）...
  • 號 : 號Ⅰ名1 （名稱） name 2 （別號; 字） assumed name; alternative name3 （商店） business house 4 （...
  • 頻譜 : frequency spectrum; frequency content; spectrum; power density spectrum; power spectrum; [系統] s...
  1. The bandwidth ( megahertz ) and spectrum position of the signal arising from television scanning

    電視掃描信號所佔的頻譜位置和帶寬（以兆赫計） 。
  2. Female courtship signal of the brown planthopper was made of many continuous regular pulses and male ' s signal was made of similar syllabics and had two types with different time domain characteristics. second male vibrational signal differed from male courtship signal with wide spectrum range and regular syllabics frequency. time domain characteristics of signals in different individuals even the same individual were different

    頻域特徵分析知，褐飛虱雌蟲求偶嗚聲信號的頻域特性較穩定，個體內比個體間差異小；雄蟲求偶嗚聲信號s 、 e片段頻譜范圍較寬，但主振頻率比較接近，差異不顯著； m片段頻帶較窄，主振頻率mvf略小於s 、 e片段，變異較小； m片段脈沖重復頻率prf為幻
  3. But the bandwidth of the raw radar video is too wide to transmit directly in the common communication channel

    但是雷達原始視頻信號頻譜很寬，要求傳輸設備有很寬的通頻帶，而且效率低、投資大。
  4. There are functions such as drawing the chart of amplitude - frequency and phase - frequency, calculating and displaying the highest peak value, the total sum of amplitude and the effective line - breadth of the signal in the program. so an effective technical means is supplied for the analysis of ultrasonic signal

    軟體系統具有幅頻圖及相頻圖的繪制、最高峰值、諧波系數及有效譜寬度的計算及顯示等功能，從而為超聲信號的頻譜分析提供了極其有效的技術手段。
  5. Thus, the frequency domain adaptive filter is well suited to a multi - narrowband interference scenario, the paper studied frequency domain adaptive algorithms, carried out analysis and computer simulations. simulation results : for gold codes ds - ss signal of length 63, 4 interferences of signal to interference ratio ( sir ) 40 ub or 4 narrowband interferences of signal to interference ratio ( sir ) 40 db and frequency - spectrum bandwidth 12 percent of the whole bandwidth, the sir improvement is better than 20db

    模擬結果指出，在輸入信號為干擾是4個等強度的多音干擾或4個頻譜帶寬占信號總帶寬12的強窄帶干擾（干信比為40db ）的擴頻信號（碼長為63的gold碼序列）情況下，演算法的干擾抑制比均優於20db 。
  6. None but is the test spectrum abundant and controllable, it is possible to simulate the stresses environment needed for exposing weakness of the product. based on summarizing the present status of the vibration test and vibration environment simulation technology in the world, the topic of simulation of super - gaussian random vibration environment with controllable frequency spectrum and its applications in reliability enhancement testing is put forward. the main content and conclusions of the dissertation are as following : 1

    本文在綜述國內外振動試驗技術和振動環境模擬技術的基礎上，引出「頻譜可控的超高斯隨機振動環境模擬技術及其在可靠性強化試驗中的應用」這一主題，並緊緊圍繞該主題開展了如下研究工作: 1 .全面分析了振動激勵的功率譜密度量級、幅值分佈、帶寬以及試件結構的固有頻率、阻尼比等因素對疲勞損傷累積的強化效應，提出振動強化試驗激勵信號應具備的重要特性:頻譜可控和超高斯，確立了本文的研究主題和方向。
  7. First, this dissertation analyses the waveform of chirp - subpulse stepped frequency signal, studies and simulates the ambiguity characteristics, the spectrum structure and the basic process to obtain high resolution range profiles, and discuss this signal ’ s high range resolution characteristic and wide spectrum characteristic

    首先，本文對chirp子脈沖頻率步進信號進行了波形分析，研究了chirp子脈沖頻率步進信號的模糊特性、頻譜結構以及合成高分辨距離像的基本過程，討論了chirp子脈沖頻率步進信號的高距離分辨力和寬帶頻譜特性。
  8. Abstract : through transient spectrum analysis, we can obtain such parameters as transient central frequency, transient frequency width and transient principal frequency. these parameters indicate dynamic characteristics of real signals, benefit the study of dynamic characteristics of radar wave, and can prvide multiple parameters for integrated interpretation of the radar profile

    文摘:通過瞬態譜分析，可以求得瞬時中心頻率、瞬時頻寬、瞬時主頻等參數表徵實信號動力學特徵，有利於對雷達波動力學特徵的研究，並可提供多參數對雷達剖面進行綜合解釋。
  9. The software and hardware design of portable digital testing equipment based on tms320vc5510 are presented, which is the newly efficient and low power consuming dsp of ti corporation. the system realizes the requirement of sample theorem when sampling the wide spectrum signal with an equivalent sample technology, integrates the lcd control core in cpld and makes cpld as lcd controller instead of specific lcd controller, and makes the colorful stn - lcd as terminal displaying facility. the system suits the development requirement of the new portable digital testing equipment with the specialities of low power consuming, high integration and good displaying interface

    本文介紹了以ti公司新一代高效率、低功耗數字信號處理器tms320vc5510為核心實現的便攜式測試設備的軟硬體設計，以等效采樣技術實現采樣寬頻譜周期信號對采樣定理的要求，在cpld內集成完整的lcd控制核代碼，並以cpld作為lcd控制器取代專用控制器，以stn彩色lcd作為終端顯示設備，該方案具有功耗低、集成度高、良好的人機介面等特點，適合新一代便攜式測試設備的發展需求。
  10. Ds signal is twice modulated with the rapid pseudorandom noise sequence and the carrier. so it appears cyclostationary. in the field of spectral correlation, ds signals appears its characteristic as fallows : for the amplitude of spectral correlation, the information of carrier frequency and pn code rate are contained on the spectrum frequency equal to zero sheet, and also the pn code rate is contained on the sheet of spectrum frequency equal to carrier frequency ; for the phase of spectral correlation, the information of carrier initial phase is contained on the sheet of cyclic frequency equal to double carrier frequency

    Ds信號是經過高速偽隨機序列和正弦載波二次調制的寬帶信號，因此具有周期平穩特性，它在譜相關域表現為:幅頻特性在譜頻率等於零截面切片上包含了載頻和偽碼速率信息特徵，在譜頻率等於載頻截面切片上包含了偽碼速率信息特徵;相頻特性在循環頻率等於兩倍載頻截面切片上包含了載波初相信息特徵。
  11. This dissertation is mainly concerned about the radiation of the tem - horn arrays which radiate uwb ( ultra wideband ) pulse, it mainly involves three parts : theory, numerical stimulation and experiment. the uwb antenna is a new research field in the world which has many differences from nb ( narrow band ) antenna. the most difference is that the uwb antenna such as tem - horn radiates nanosecond pulse which has wide frequency spectrum, but the nb antenna radiates single frequency signal

    超寬帶天線是一項新興的研究領域，它與窄帶天線有很多不同之處，最根本的不同在於：超寬帶天線例如tem喇叭天線是輻射納秒級短脈沖信號，這種脈沖信號有很寬的頻譜；而窄帶天線大都是輻射單一頻率時諧信號的。
  12. The high - resolution spatio - temporal two - dimensional ( 2 - d ) spectra estimation of wide - band signal acts an important role in modern array signal processing. though abundant results acquired in theory, there are a lot of difficulties in the real time application of wide - band system

    寬頻段高解析度時-空二維譜估計是當前陣列信號處理研究的一個重要方向，雖然在眾多學者的努力下已取得了豐富的理論成果，但是一直以來寬頻段陣列系統的工程實現存在很多困難。
  13. It points out that the signal which is located on the edge of filter is changed but still keeps the characteristics of lfm signal, so traditional lfm signal parameter estimation algorithms can be used. ( 3 ) the effects of parameters of analog - digital channelized receiver on lfm signal parameters estimation are discussed

    （ 2 ）對超寬帶線性調頻信號通過通道化之後的頻譜結構變化進行了定性的分析，指出超寬帶線性調頻信號在通過通道化之後，其位於通道邊緣的部分發生了較小變化，但仍具有線性調頻信號特徵。
  14. Hfc ( hybrid of fiber and coax ) network is a competitive means to support wide varieties of video, voice and data services. the thesis describes and analyzes the system framework, frequency assignment and signal modulation schemes of hfc. recently hfc and adsl are aggressive among broadband access technologies

    本文對hfc網的系統結構、網路拓撲、頻譜分配方案和業務信號的調制方式等進行了詳細的闡述和分析，並且全面地比較了hfc和adsl的優缺點，總結出hfc具有較高的性價比，是我國寬帶接入網的優選方案。
  15. This paper utilizes masking rate theory to analyze the variation of center zero - level energy, the influence of metallic mesh ’ s different parameters on infrared transmitting ; deduces the relational expression between infrared transmitting efficiency and metallic mesh ’ s parameters ; comes to the conclusion that we can improve infrared transmitting efficiency by increasing

    理論研究表明，金屬網柵的周期選擇在200 ~ 400 m之間，線寬不大於10 m ，是較為理想的網柵參數。最後，在實驗室里用1 ~ 20ghz的信號發生器、功率放大器和頻譜分析儀等雷達波檢測設備，對金屬網柵的屏蔽效率進行測試。
  16. According to the characteristic of digital adaptive heterodyne filter and the conception of interference counteraction, the paper presents a new structure to enable the filter track the interference signal precisely and control the width and depth of notch. through simulation, it is demonstrated that the new structure can suppress one or more interference signals and the filtering operation has little influence on signal spectrum

    論文利用數字自適應外差濾波器的特點，運用干擾抵消的概念，提出了一種新的結構，能使濾波器精確跟蹤干擾信號，並能控制陷波的寬度和深度，經模擬驗證，該結構的濾波器能較好的抑制一個和多個干擾，同時濾除干擾后對信號頻譜的損害較小。
  17. The wavelet transform is discussed in the code - width estimation ; and the feasibility and effectiveness of the code - width estimation using the spectrum of the bipolar base - band signal are proved

    在參數估計中，主要討論了小波變換演算法在基帶信號碼元寬度估計中的應用以及利用雙極性基帶信號的頻譜估計碼元寬度的可行性和有效性。
  18. However, performance is limited by the low signal - to - noise ( snr ) and high date rate. a potential solution is to add a strong error correcting code. so studying the error correcting code on uwb system is necessary and worthy

    但是超寬帶信號頻譜寬、功率低且傳輸速率很高，使其更容易受到各種干擾而影響傳輸質量，所以在超寬帶系統中研究通道編解碼技術變得非常必要和有價值。
  19. Chaotic signal with continuous wide band frequency spectrum is not periodic and is similar with noise signal. these properties make it suitable to secret communication

    由於混飩信號的非周期，連續寬帶頻譜，似噪聲等特點，特別適用於保密通信領域。
  20. 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。
分享友人
分享到 Line

分享到臉書