On the basis of the theoretical analysis of various different interference caused by the sources with different properties, the relevant shield measures are investigated, thus the optimal anti-interference effect is derived.
The anti-interference effect of the presented method is analyzed by simulation data and on-site testing data and is compared with those by common used methods such as digital filter, time-frequency conversion, adaptive filtering and wavelet transform based filtering.
This paper analyzes the principle of chief anti jamming technologies of frequency agile radar(FAR),frequency diversity radar(FDR) and self adapt frequency agile radar(SAFAR) in frequency domain,studies the effectiveness measurement methods of these technologies,brings forward the self adapt improvement factor which measuring the anti jamming effectiveness of self adapted frequency agile radar.
The test shows that the TISAB liquid with 4g/L Na_3Cit has a close anti—interference effect compared with TISAB liquid containing 4g/L CDTA of the International Standard.
According to the structure and task of sky wave overthe-horizon radar(SWOTHR),the paper uses WSEIAC evaluating model with usability vector,creditability matrix,power vector and anti-jamming gene,in last educes the equation for SWOTHR combat efficiency.
根据天波超视距雷达组成和任务,采用武器系统效能工业咨询委员会(weapon system efficiency industry advisory committee,WSEIAC)系统效能评估模型,通过对系统的可用性向量、可信性矩阵、能力向量以及抗干扰效果因子的建模,推导出天波超视距雷达系统作战效能方程。
In this paper, the basic principles of adaptive array signal processing tech-nique for use in FM mobile communication and anti-cochannel-interference byusing adaptive array are outlined. And then, the features and properties of theomnidirectional adaptive array signal processor (OAAP) are described. The per-formance of AA-1 Adaptive Radiotelephone, which has been made with an OAAPbuilt-in, are also described.
Interference of P with determination of Ca in food and the effect of interference suppressing agents of La, Sr and 8-hydroxyquinoline were studied. The results showed that 1) interference of P with Ca related to P/Ca ratio, the relative absorbance of Ca were getting increase along with, the decrease of P/Ca ratio if P/Ca ratio about 0.6; 2) La was more effective than the other interference suppressing agents....
Interference of P with determination of Ca in food and the effect of interference suppressing agents of La, Sr and 8-hydroxyquinoline were studied. The results showed that 1) interference of P with Ca related to P/Ca ratio, the relative absorbance of Ca were getting increase along with, the decrease of P/Ca ratio if P/Ca ratio about 0.6; 2) La was more effective than the other interference suppressing agents. The relative absorbance of calcium reached to about 90% when 0.5% or 1% La was used in the P/Ca ratio of 30; 3) Sr had two actions. On one hand Sr had some suppressing action on P interference, and on the other hand Sr depressed the Ca absorption signal obviously; and 4) 8-hydroxyqui-noline had some but not very effective interference suppressing action. The content of Ca determined in food SRM were lower than certified value using 0.1% 8-hydroxyquinoline as interference suppressing agent.
Anti-interference is a key technique of the microcomputer testing system used on the industrial site. Using NQ-1 system as an example, Some phenomena of the disturbed system are described in this paper, and both hardware and software anti-interferance measures are presented. Finally, the anti-interferece results are introduced.
抗干扰效果
anti-jamming effectiveness
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