narrow band interference 中文意思是什麼

narrow band interference 解釋
窄帶干擾
  • narrow : adj 1 狹 窄 狹隘的 狹小的 （opp broad wide）。2 有限的 受限制的；有偏見的 氣量小的 心眼兒窄的；眼...
  • band : n 1 帶，繩；帶形物；箍；箍條；嵌條；鑲邊；鋸條； 〈pl 〉 （法官等的）寬領帶。2 束縛，羈絆；義務；...
  • interference : n. 1. 沖突，抵觸。2. 干涉，干預。3. 妨礙，打擾，阻礙物。4. 【物理學】干擾；干涉。
  1. A novel communication receiver which uses lapped transform ( lt ) incorporating modified median filter ( mmf ) algorithm is designed for narrow - band interference excision. the lt domain mmf algorithm takes full advantages of the direct sequence spread spectrum signal, as well as the characteristics of lt, performing the transform domain filtering twice. the first filtering locates the position of interference and mitigates most of them. the second filtering is performed in a small neighborhood of the located interference. so lt domain mmf algorithm can completely mitigate the interference without distorting the desired signal. simulation results demonstrate the improved ber performance and increased robustness of our receiver

    本文採用改進的重疊變換域中值濾波演算法進行變換域抗干擾處理.該演算法既考慮到直接序列擴頻信號的特點，同時又利用重疊變換的特性對變換域系數進行了二次濾波.該演算法節省處理時間，並且不需要有關干擾的先驗知識，系統性能不會隨干擾頻率變化而變化，因而是一種很穩健的處理方法
  2. By making full use of favourable narrow - band tracing filter character of pll and by combining the merits of dds such as super fine frequency resolution 、 high frequency accuracy 、 very fast frequency hoping with it, the pll / pll + dds frequency synthesizer presents wide band high quality source and super small frequency hoping step. while the electronically tuned filter abates the image interference and notably improves the selectivity. the theorem of frequency synthesizer and center - frequency - fixed filter is simply but adequately introduced first in this paper

    課題中所採用的pll或dds pll鎖相頻率合成方法充分發揮鎖相環良好的窄帶跟蹤濾波特性，並結合dds的高頻率解析度、高頻率精確度和高速頻率捷變等優點，分別實現了系統所要求的高質量寬帶本振源和小步長頻率捷變；採用電調諧選頻技術，則大大改善了接收機的選擇性和抗干擾能力。
  3. First, this paper research and analyze the feature of signal of pulse doppler radar, and the mathematic model of radar is constructed. the several interference methods that narrow - band suppressing interference, range deception interference and velocity deception interference are discussed. and interference ability is evaluated and simulated

    研究和分析脈沖多普勒雷達信號特徵，建立了該種雷達的數學模型，並討論對脈沖多普勒雷達的窄帶噪聲壓制式干擾、距離欺騙干擾、速度欺騙干擾等幾種干擾樣式，並進行干擾性能評估和模擬研究。
  4. Higher capabilities were put forward for detection, identification and anti - interference of torpedo in future naval battle. compared with the narrow - band processing, wide - band processing is a new direction for underwater signal processing for its advantages including abundant information of wide - band echo and little correlation of reverberation

    未來海戰對魚雷在探測目標、識別目標和反對抗能力方面提出了更高的要求，而寬頻帶回波信號具有攜帶目標信息量大，混響背景相關性弱，利於檢測、識別目標等優點，因此自導系統發展的方向是寬頻帶自導。
  5. The result shows that the ability of anti - interference from strong - narrow band can be improved by using albefaction filter, the interference resisting property of the dual tap filter is much better than that of predicted error filter

    模擬結果表明，加白化濾波器確實能提高系統的抗強窄帶干擾的能力，同時也表明雙向抽頭濾波器的抗干擾性能比預測誤差橫向濾波器的性能要好。
  6. Influence of doppler shift on narrow - band interference suppression in low - orbit satellite communication

    高速移動通信中的多普勒分集技術
  7. Effect of error auto - compensation and error of the extremely narrow - band interference filter in dwdm system

    Dwdm極窄帶干涉濾光片的誤差與自動補償效應
  8. Development of high stability and narrow band standard interference light filter for enzyme content analyzer

    酶標分析儀高穩定度窄帶標準干涉濾光片的研製
  9. A nonlinear adaptive filtering fast algorithm for narrow - band interference suppression in dsss systems

    直接序列擴頻系統中強窄帶干擾抑制的一種非線性自適應抑制快速演算法
  10. The technology of very low bit rate for hf ( high frequency ) communication means that, one technology of ecm ( electronic counter measures ) resistant communication is developed for low bit data message exchange in the time of battle which data communication is destroyed by electronic disturber. it is regarded by armies in the battle of information, because that it can overcome the very low snr ( signal noise ratio ), very high narrow - band interference and multipath with maxium delay of fifty millisecond

    短波最低限度通信技術是在戰時強電磁干擾情況下能實現保證最低限度的數據報通信的一種抗干擾通信技術。由於其能有效的克服極低信噪比、較強的窄帶干擾和幾十毫秒的多徑，在信息戰中受到各軍高度重視。
  11. The spread spectrum ( ss ) communication system has stronger ability of resisting jamming, narrow band, and multipath interference than that of the conservation communication systems

    擴頻通信系統與常規的通信系統相比，具有很強的抗人為干擾，抗窄帶干擾，抗多徑干擾的能力。
  12. The calculated density of mgf2 with iad was increased from 0. 70 for conventional process to 0. 97. meanwhile we find that the spacer layer has a great influence on the spectral shift. the further the layers are away from the spacer, the less the effect ; in the same way, the iad reduces the spectral shift of nb205 / sio2 narrow band interference filters from 29. 4nrn to 12. 4nm ; the iad reduces the spectral shift of tio2 / sio2narrow band interference filters from 24. 7nm to 8. 4nm

    同時發現間隔層對光譜漂移的影響最大，越遠離間隔層的膜層，其影響越小；而nb _ 2o _ 5 sio _ 2多層膜窄帶干涉濾光片漂移從常規工藝的29 . 4nm降到12 . 4nm ； tio _ 2 sio _ 2多層膜窄帶干涉濾光片漂移從常規工藝的24 . 7nm降到8 . 4nm 。
  13. An algorithm for narrow - band interference excision in lapped transforms domain

    一種基於重疊變換域的抗窄帶干擾演算法
  14. This task uses the ds - ss technology, and researchs the important technologies, such as synchronization of ds - ss, rake receive, narrow - band interference suppression, etc. these technology are useful for the voice - band channel of hf. i designed one system of very low bit rate for hf data communication, and completed the softwave module design of the system. i get the result of system ' s simulator, it ' s useful for the system realization

    根據短波音頻帶寬通道的特點，重點對系統的擴頻同步技術、 rake接收技術和窄帶抗干擾技術進行了專題的研究。並根據自己多年的科研經驗，設計了一種具有實際意義的短波最低限度通信系統，並對實際的軟體實現進行了模塊化的設計。
  15. The typical result shows that the spectral shift of zns / mgf2 narrow band interference filters is less than 0. 5nm. the formula for estimating packing density of the films was put forward in terms of the measured. and the packing density of mgf2 layers in the filters was calculated

    計算了濾光片中mgf _ 2膜層的聚集密度，離子輔助使mgf _ 2的聚集密度從常規條件下的0 . 70提高到0 . 97 ，增幅達38 。
  16. In consideration of defects of weak anti - interference ability of strong - narrow band in an orthomode spread spectrum system, it is proposed that an ablefaction auto - adated filter, which is a new method, is used to trace and avoid the interference from the strong - narrow band

    摘要針對直擴系統對強窄帶干擾的抗干擾能力弱的缺陷，提出了採用白化自適應濾波器來跟蹤並消除強窄帶干擾的新方法。
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