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A slight interfering effect of the poliovirus on the multiplication of ECHO9 virus has been observed in sucklingmice.


An ionic binding of PLA2 to membrane may be alluded from the interfering effect of anionic phospholipids on the PLA2 action.


The interfering effect of different technological impurities on the accuracy of determining the concentration of DMAA is reduced to the minimum in the proposed version of the method.


Arsenite, arsenate, phosphate and sulfate show strong interfering effect at high anions to fluoride molar ratio in solution.


offline), there is noconsensus on the exact effect of explicitdiscourse markers on text understanding; threedifferent findings are reported in theliterature: markers would have a facilitatingeffect, an interfering effect or no effect atall.

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 In this paper the interfering effect of FM signal on a direct sequence(DS) spread spectrum system is analysed, and the formulae are proposed, which can be suitable for both narrowband and wideband FM signals. The concept of "equivalent noisy power spectral density" is introduced in this paper. So long as the power spectral density of the interfering signal is known, it may be changed into ths "equivalent noisy power spectral density" and hence the bit error probability of the DS system will be calculated.... In this paper the interfering effect of FM signal on a direct sequence(DS) spread spectrum system is analysed, and the formulae are proposed, which can be suitable for both narrowband and wideband FM signals. The concept of "equivalent noisy power spectral density" is introduced in this paper. So long as the power spectral density of the interfering signal is known, it may be changed into ths "equivalent noisy power spectral density" and hence the bit error probability of the DS system will be calculated. Using this method, we can easily obtain the DS system's reception performance interfered by a FDMFM or TVFM signal.  本文分析调频信号对直扩系统的干扰效应,导出了既能适合于窄带调频又能适合于宽带调频情况的干扰计算公式。文中提出等效噪声功率谱密度的概念。只要知道干扰信号的功率谱密度函致,即可将其折算为等效噪声功率谱密度,从而算出直扩系统的误码率。采用此法,可方便地分析出FDMFM或TVFM信号干扰下的直扩系统接收性能。  In this paper, the coherent scattering model is used to study on dependency relationship between chaff cloud and its spatial distribution in the outer space. Curves and curved surfaces between scattering cross section of some typical distribution chaff cloud and its spatial distribution parameters are given. Experiment results show that chaff cloud′s scattering cross section greatly varied with different spatial distribution form. In some instances, variation of chaff cloud′s scattering cross section can reach... In this paper, the coherent scattering model is used to study on dependency relationship between chaff cloud and its spatial distribution in the outer space. Curves and curved surfaces between scattering cross section of some typical distribution chaff cloud and its spatial distribution parameters are given. Experiment results show that chaff cloud′s scattering cross section greatly varied with different spatial distribution form. In some instances, variation of chaff cloud′s scattering cross section can reach 8~12dB. Significantly, the effective scattering cross section of chaff cloud can be increased by optimizing the distribution of chaff cloud, then interfere effect can greatly improved.  采用箔条云团的相干散射模型〔1〕研究了自由空间中云团散射截面与其空间分布的依赖关系 ,定量地给出了几种典型空间分布箔条云团的极化散射截面与其空间分布参数的关系曲线或曲面 ,计算机仿真结果表明 :箔条云团散射截面因其空间分布形式的不同而有较大的差异 ,某些情况下 ,不同空间分布的散射截面之间的差异可达 8～ 12 d B之多 ,通过设计箔条云团的空间分布形状及其密度分布 ,可有效地增大箔条云团的有效散射截面 ,进而提高干扰效果  First,the conception of the correlation tracking arithmetic and the dynamic transmutation were introduced.Then,taking tank as a subject to be researched,the effect of the dynamic transmutation that interfered with missile endguided applying the correlation tracking arithmetic was studied,the model of mean gray value was put forward,and the influence of interfering effect produced by changing gray value of different parts of the tank was analyzed.Finally,the improved model of the distributing of gray value... First,the conception of the correlation tracking arithmetic and the dynamic transmutation were introduced.Then,taking tank as a subject to be researched,the effect of the dynamic transmutation that interfered with missile endguided applying the correlation tracking arithmetic was studied,the model of mean gray value was put forward,and the influence of interfering effect produced by changing gray value of different parts of the tank was analyzed.Finally,the improved model of the distributing of gray value of the background was put forward.  介绍了相关跟踪算法和动态变形的概念,针对坦克研究了其动态变形后对以相关跟踪算法为末制导算法的导弹的干扰效果,提出了“平均灰度值”模型,并分析了改变坦克不同部位灰度值对干扰效果的影响,最后提出了改进的“背景灰度值分布”模型.   << 更多相关文摘 
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