自干扰

An anti-jamming algorithm for narrow-band interference in direct sequence spread spectrum systems ,which is based on the adaptive IIR notch filtering is introduced.

介绍了一种直接扩频系统中抗窄带干扰的自适应IIR陷波滤波算法。

ABSTRACT The spread spectrum communication with an aperiodic PN code and under strong man-made jammers has an important significance in military communications.

强人为干扰环境下的非周期扩频码的扩频通信在军事上具有重要的意义。自适应天线是抗干扰的前沿研究课题。

One reason for this is to make use of adaptive nulling techniques to combat frequency interference.

旧2 1。亥JLJ砚『刁在SKA的设计中，采用相控阵技术的一个原因是想利用自适应零点形成技术来抵抗频率干扰。

Radio-frequency interference will cause severe degradation on satellite communications link performance,and adaptive nulling antenna is an effective anti-jamming measure for communication satellite.

射频干扰会严重影响卫星通信链路性能，而自适应调零天线是一种有效的卫星抗干扰措施。

Experimental results disclosed that the upper limit on the photon mass was 1.2×10-51g, and this figure, collected by Particle Data Group in 2004, has improved almost 20-fold compared with that of the static torsion balance experiment.

该数值不仅将国际上扭秤静态实验结果提高了约20倍，而且调制的实验方法还有效地克服了扭秤静态实验中实验结果对宇宙磁场矢势与地球自转轴之间夹角的依赖关系，并且极大地抑制了各种周日背景干扰的影响，提高实验的置信水平，该实验结果于2004年被国际粒子物理数据组收录。

This research conducts a two-factor between-subject factorial experimental design, namely 2 (line/snake queuing configuration)×2 (continuous/discontinuous television program). We also exploit the two-way Ancova method. Excluding the interference by mood state and waiting tolerance, we study how the above-mentioned two factors affects consumers' perception of waiting time.

本研究采2（排队队形：直线队形、蛇形队形）×2（电视节目型：续播放型节目、非续播放型节目）的二因子实验设计，并用双因子双共变共变的统计方法，希冀研究这个自变因子，在排除消费者『情绪』与『等待容忍』的干扰下，对等待时间知觉的影响。

For long-term restoration,in LS and PS,species richness and diversity will notincrease significantly until the self-thinning stage or the occurrence of naturaldisturbance,because excessive stand density greatly impedes the regeneration ofnative species.

由于LS和PS林分密度过大，在自疏阶段或出现较大程度自然干扰之前，物种多样性将不会有明显的增加。

The accumulated self-exciting dose for Na-24 is only 1.12 mGy during its average life-time for irradiation of total thermal neutron fluence of 3.6E12 nth/cm^2. Conclusions: Because of the self-exciting dose reduced from neutron activation can be neglected for gamma dose measurement in neutron and gamma mixed field, and the threshold of linear response is 2 Gy, the FWT-70-40 dosimeter not only can be used for high dose rate Co-60 irradiation field and the high energy electron beam for medical purpose, but also can be used for gamma dose measurement in an epithermal neutron beam for boron neutron capture therapy.

型号FWT-70-4OM）剂量计於BNCT高中子通量与剂量的中子、加马混合辐射场所产生的自激剂量，对加马剂量度量干扰可忽略，且对加马的最低剂量限值为2Gy，因此除可应用於钴60加马高剂量辐射场与放射治疗用高能量、高剂量电子射束的剂量度量外，亦可应用於BNCT照射治疗用高能量、高剂量的中子、加马混合辐射场的加马剂量度量。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失