干扰抑制

The theory of sidelobe canceler which is common in radar countermeasures is analyzed and two locations are indicated: 1 Depending on the energy of interference; 2 Limited by the interference's changes. Aiming at sidelob canceler's localizations, the paper proposes the method of integrating beam forming and spatial spectrum estimation to eliminate the interference.

针对旁瓣对消的局限，本文提出了将波束形成技术与空间谱估计技术结合来实现抑制干扰的思路：通过空间谱估计技术对于扰源准确的定位；利用此方位信息波束形成，使空间滤波器在该方位形成零点凹陷，以达到抑制干扰的目的。

Under the conditions to consider the influence of the inertia of loading side and the stiffness of torque sensor,the dynamic models are established,the conclusion that the superfluous moment is related to the motion velocity,acceleration,and the differential of acceleration is presented.0n the basis of this dynamic model,a more effective control method to reject to extraneous moment from the view point of the division and cooperation of the function of the controller,i.e.hybrid control method,is proposed.

在考虑力矩传感器刚度和加载侧惯量影响的情况下，建立了电液力矩加载系统的动态模型，指出多余力矩不仅与运动速度干扰有关，而且还与运动加速度干扰和加速度的变化率干扰有关。在此基础上给出了一种从职能分工角度抑制多余力矩更有效的控制方法——混合控制法。

Furthermore, the brain area of anterior cingulated cortex revealed different response type under emotional and non-emotional interference condition, i.e, activation of ACC in color-word Stroop task was enhanced along with increasing of cognitive conflicting interference. Yet in emotional Stroop task, activation of ACC is reduced when the negative emotional interference was enhanced. This phenomenon suggests that ACC possess a flexible conflict monitoring mechanism and adaptive mechanism, thus providing evidence for the theory that ACC plays an important role in the cognitive and emotional interaction.

其结果显示，背侧前额叶、前扣带回是共同参与情绪与非情绪干扰的执行抑制的脑区，其中，前扣带回在情绪与非情绪干扰两种条件下出现不同类型的反应方式，即前扣带回在色字Stroop作业中随认知冲突干扰梯度的增加而增加，但在情绪Stroop作业中随负性情绪干扰梯度的增加而减少，体现出前扣带回具有灵活的冲突监控与适应性机能，支持前扣带回在认知与情绪交互作用中扮演重要角色的理论。

To determine the role of neutral trehalase during storage stability of spores, we constructed a M.anisopliae RNAi transformant and an overexpression transformant. Analysis of these transformants revealed that the expression level of the neutral trehalase gene in RNAi transformant(No 688) was reduced to 50% of which found in wild type and the overexpression transformant(No 113) showed approximatlely 2-fold higher levels of neutral trehalase mRNA than that found in wild-type control.

构建了中性海藻糖酶基因RNA干扰载体和超表达载体，采用电转法和基因枪法转化金龟子绿僵菌CQMa102，获得了RNA干扰转化子和超表达转化子，比较这两种转化子和出发菌株的mRNA表达情况，发现RNA干扰转化子中性海藻糖酶mRNA表达受到抑制，而超表达转化子中性海藻糖酶mRNA的表达量是出发菌株的2倍。

Methods: The interference evaluation experiment proves that IVIG exerts strong inhibitions in Bacterial Endotorxin Test. While the interfering factors can't be eliminated by treatments such as dilution and neutralisation, they are liable to be inhibited provided that the IVIG samples are to be diluted by 1:4 with the Dilution Solution Ⅰ.The BET for IVIG preparation diluted by 1:4 with the Dilution Solution Ⅰ is carried out comply with the Chinese Pharmacopoeia(2000 Edition) The lysate with sensitivity of 0.125Eu/ml is used in the test,and the results of the BET are comparable to that of Pyrogen Test carried out in rabbits.

通过干扰评价实验证明IVIG对细菌内毒素检查法有强烈的抑制作用，单纯用简单稀释和调整pH值法无法消除干扰，如果用稀释剂对IVIG作1：4以上的稀释，即可消除样品对该检查法的干扰，利用灵敏度为0.125EU/ml的鲎试剂，将样品用稀释剂稀释4倍，按中国药典（2000版）进行细菌内毒素的检查，结果与家兔热原质试验进行比较。

One problem existing in side-lobe blanking is that when pulse-type clutters fill in the whole range channel, the blanker suppresses not only the clutters but the target signals as well, thus loses its detection ability.

旁瓣消隐技术在使用中存在的一个问题是：当从旁瓣进入的脉冲式杂波干扰充满整个距离通道时，旁瓣消隐器在抑制干扰的同时，也使目标信号被抑制，从而失去对目标的探测能力。

It is noted that the IAFH technology can not only countermeasure a partial-band jammer with a continuous spectrum, but also fight off a trancing jammer effectively.

结果表明，信息关联跳频技术不但能抑制部分频带连续谱干扰，而且对跟踪干扰有很强的抑制能力。

The purpose of this thesis is not only to overcome multipath interference by spread spectrum but also to improve the performance of the system by employing RAKE receiver to recombine some multipath signals.

扩频技术特别是直接扩频技术也是对抗多径干扰的一种非常有效的技术，其中的RAKE接收技术不但能够抑制干扰；而且还能利用多径干扰的能量提高信噪比，极大的改善了系统的性能，并且扩频技术是现在唯一能工作在负信噪比条件下的通信技术，所以扩频技术在水声通信中的应用也越来越受到关注。

Furthermore, the presence of wideband interference will degrade performance of one dimension profile. In order to suppress the wideband interference, a new wideband jammer nulling algorithm is proposed based on digital beamforming above.

此外，宽带干扰的存在会严重影响一维距离像的性能，为了抑制宽带强干扰信号，在上述数字波束形成的基础上，提出了一种宽带干扰置零方法。

Based on this, aim at the disadvantage on Wigner Distribution and Fractional Fourier Transform that can't restrain noise interference effectively when be used to detect Linear Frequency Modulated signals interfered by heavy noises, we proposed a improved WD. Simulation results show that this method can restrain noise interference effectively and improve the ability of LFM signals detection. On the other hand, in multi-component cases, WD suffers from the cross-terms, which may impair some of the auto-terms. In order to separate original multi-component signals into components and reconstruct them separately, we can use the method of optimal filtering in fractional Fourier domain. But this method also has a problem that if signals have aliasing in the fractional Fourier optimal domain as well, the reconstructed signals will be distorted. In this thesis, a novel method of quasi Fourier transform is proposed in order to solve the problem of multi-component signal reconstruction, and have good results.

在此基础上，针对Wigner分布和分数维傅里叶变换在处理高噪声背景下线性调频信号检测的问题时存在不能有效抑制噪声干扰的缺点，提出了改进Wigner分布的办法，该方法能够抑制噪声，提高信号的检测能力；针对Wigner分布在处理多分量非线性调频信号时存在干扰项的缺点，以及分数域最优滤波方法在处理多分量非线性调频信号分离重构问题时存在的局限性，该局限性表现为在对最优分数域上也有信号分量重叠的情况进行处理时重构信号发生畸变，提出了新颖的类傅里叶变换的方法，该方法对在最优分数域上也有信号分量重叠的情况也能处理，得到的重构信号失真很小。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。