自干扰

The computer simulations show that AIC-SOCS can reject the interference more efficiently compared with the Adaptive Interference Canceler based on Second Order Statistics because is independent of uncorrelated Gaussian noise, and it can reject interference as efficiently as AIC-FOS.

仿真实验表明，AIC-SOCS的性能和AIC-FOS的干扰抑制性能相当，表现出比基於二阶累积量的自适应干扰对消器更优良的干扰抑制性能。

However it is not suitable for multi-and high-speed Ad Hoc networks for the incurrence of serious over-interference area and poor performance in such environment. A scheme is proposed to solve this problem, which includes Adaptive-RTS and Adaptive-CTS at both sender and receiver side.

我们提出了一种适合多速率高速Ad Hoc网络的自适应RTS／CTS握手机制，来解决多速率MAC协议在Ad Hoc网络中的大干扰区问题和性能低下问题，该自适应过程包括发送端的自适应RTS机制（Adaptive RTS，A-RTS）和接收端的自适应CTS机制（Adaptive CTS，A-CTS）。

The sidelobe has many ripples in condition of small training sample size and the diagonal loading technology is applied to this method, which improve the convergence speed of sidelobe. We also study the pattern control of area array. The effectiveness of this new method is illustrated by the designed simulations.5. Adaptive sidelobe cancellation is a important part of phase array radar. To realize low sidelobe and suppressing the interferer the antenna technique and signal process are combined.

用对角加载方法解决了小快拍数下收敛速度慢的问题，并仿真给出了加载量的选取范围，对面阵的自适应方向图控制文中也进行了详细讨论，阵列幅相误差和互耦误差对自适应方向图控制影响，文中也给出了仿真和分析。5、自适应旁瓣相消是相控阵雷达技术的一个重要组成部分，它将天线技术与信号处理技术结合在一起，使相控阵天线实现超低副瓣，达到抗有源干扰的目的。

Based on the interference characteristic, the sidelobe cancellation in time is presented and the procedure is designed, which achieves good results that the detection distances of OSMAR is increased by over 40km. At last the dissertation summarizes the application of beamforming in HFSWR, its effect and defects. 5 The dissertation discusses the application of orthogonal expansion method in HFSWR. At first, the traditional OE algorithm is introduced, and the output form is concluded. Then the dissertation discusses the influence of OE method on target signal.

首先介绍了阵列天线的方向图，接着阐述了波束形成的基本原理，然后引入了自适应波束的概念，讨论了确定权函数的准则，介绍了自适应波束形成在高频地波探海雷达中的应用和兼顾目标信号的波束形成；重点介绍了自适应旁瓣对消的原理和权系数计算方法，结合高频地波探海雷达数据特点，设计了在频域用旁瓣对消法消除射频干扰的处理过程，给出了处理结果，并对其效果进行分析，进而提出在时域进行分段旁瓣对消的新方法，设计了处理流程和计算方法，然后给出处理结果，该方法能提高OSMAR探测距离40km以上。

Generally, adaptive regulation can't deˉ scend, so that this bug also causes acute chattering.

但由于自适应律是非减函数，在进入滑模态以后，系统如果再次受到干扰，那么自适应项将在原有基础上增加，而不会随着干扰的消除而递减。

Results of computer simulations prove that the MUD has higher SINR value, effective MAI cancellation, better Near -Far resistance capability than Decorrelating MUD. So it"s feasible and reasonable. Simulation results also show that the LMS algorithm can exactly converge to stationary value, works well on BER properties and adaptively detects the users" signals.

实验仿真表明稳态时这种结构的检测器可获得高于解相关检测器的信号干扰比，能够有效地抑制多址干扰，具有良好的抗远近效应能力；采用LMS自适应算法时能够准确收敛到稳态解上，较好的实现自适应检测。

To solve the problem of channel with distortions, an adaptive circuit is configured by a new laddered method based on relevant articles, and simulation study was made on four dimensional Chua's chaos oscillator. The simulation results demonstrated that: synchronization of two chaotic oscillators can be achieved when adaptive circuit has adaptive capability. Synchronization of two chaotic oscillators cannot be achieved when adaptive circuit has no adaptive capability. Simulation studies were done for five scroll chaotic oscillators that achieve bond-orbit, coupling and pulse synchronization.

为了解决信道畸变问题，根据相关文献提出的梯度法，本文构造了一种自适应同步电路，并以四阶变型蔡氏混沌振荡电路为例进行仿真研究，仿真结果表明：当自适应同步电路具有自适应效应时能实现有噪声干扰情况下的两个混沌振荡电路的同步；若自适应同步电路没有自适应效应时，则不能使两个混沌振荡电路同步；以5涡卷混沌振荡电路为例用键波同步法、耦合同步法、脉冲同步法进行同步仿真研究。

In this thesis, the system model of DS-SS system and the adaptive filter structure are first introduced . Then, the interference suppression(interferences including strong tone and NBI)using the LMS algorithm with adjudging and feedback is analyzed in detail.

在叙述了DS-SS特性及自适应滤波器结构后，我们采用带判决反馈的LMS自适应算法抑制DS-SS信号中的强单音干扰、窄带干扰，分析了算法的各项性能，并利用计算机进行仿真，讨论了所取参数对算法的影响。

There is some narrow band interference in the received signal which will severely damage the application. The experiments indicate that the interference can be cancelled by adaptive trap filter very well.

利用开发出的测量系统对接收中存在的干扰进行了研究，针对实际中出现的干扰，采用自适应陷波滤波算法，能较好的克服该干扰。

To study the effects of no load voltage step response index on disturbance quality of power system for self excited shunt excitation system, this paper analyzes the types of power system disturbances and disturbing qualities, establishes the different groups of self excited shunt excitation system according to the different overshoot in identical rise time and the different rise time in identical overshoot.

1电力系统扰动项目的选择为研究自并励静止励磁系统的发电机空载电压阶跃响应指标对电力系统扰动品质的影响，首先确定电力系统扰动种类。选择了反映大干扰稳定和小干扰稳定的发电机近端三相短路0.15切线路、远方三相短路0.15切线路、高压母线突加无功负荷、甩负荷、小干扰振荡模式计算等5个项目。

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