自干扰

For active acoustic homing torpedo, reverberation is the main interfere.

混响是主动声自导鱼雷的主要干扰，混响的建模与仿真对于研究鱼雷声自导系统具有重要意义。

In the third part, the design of the controller is based on sliding mode control theory and the approximation capability of fuzzy systems.

第三部分：考虑到摩擦力、未建模动态和干扰对机器人系统的影响，基于滑模控制原理并利用模糊系统的逼近能力设计控制器，应用李亚普诺夫方法设计自适应律，提出了一种新的基于模糊逻辑的自适应模糊滑模控制方案。

Performance analysis and plenty of numerical simulation shows that the robust multiuser detector and its adaptive version have excellent performance of output signal-to-interference-plus-noise ratio, bit error rate, asymptotic multiuser efficiency and robustness even existing stronger MAI.

理论分析和仿真实验表明，即使在较强的多址干扰条件下，稳健的盲线性多用户检测及其自适应实现展示了优异的误码率、信干噪比以及渐进多用户有效性性能，对特征波形失配具有较强的稳健性，且自适应算法能快速收敛至稳态解。

So, the study in this dissertation focuses on some key points in theuncertainty treatment of mobile robot localization as follows: Combined with the multiple proprioceptive and exteroceptive sensors ofmobile robot MORCS-1, aimed at the drift error of fiber optic gyro as theproprioceptive sensor, the neural network using genetic algorithm as optimaltool is proposed to accomplish the modeling and calibration for temperaturedrift of fiber optic gyro, which can reduce the drift error to the standard outputat constant temperature; and aimed at the noisy disturbance of ranging datafrom the exteroceptive sensor laser scanner, a dynamic adaptive filter isintroduced through the analysis of neighboring ranging data in time and spatialcorrelation to realize the real-time and dynamic filter, which can validly filter the noisy disturbance to meet the requirement of the accurately real-timeobstacle detection in mobile robot navigation.

总结全文，在移动机器人定位的不确定性处理研究中，提出了一些具有一定创新性的方法：结合自行研制的移动机器人MORCS-1系统的多种内外部定位传感器，针对内部本体感受传感器光纤陀螺仪的漂移误差，提出采用基于遗传算法优化的神经网络来对光纤陀螺仪的温漂建模及校准，能够将其温漂变化控制在恒温条件下标准测试输出附近；针对外部环境感知传感器激光雷达测距数据中包含的噪声干扰，考虑移动机器人导航中激光雷达测距数据的时空关联性，提出采用动态自适应滤波技术进行预处理，从而可以有效滤除噪声干扰满足导航中障碍实时精确检测的要求。

Simulation shows that the presented scheme screen out contaminated secondary data effectively and improve the performance of STAP.

通过仿真证明该方法能有效剔除存在干扰目标的样本，提高训练样本被干扰目标污染时空时自适应处理的检测性能。

Distinguishing from the former researches about CR service communication interruption, only spectrum handoff times exceed a certain number, communication interruption will occur. This strategy can reduce the COP of CR services.(3) Some coexistence issues between WRAN and DTV system are studiedFirstly, the network architecture, system parameters, and self-coexistence of Wireless Regional Area Network are investigated, and convergent performances among overlapping Base Station are simulated and validated. Then, a simple coexistent scenario between WRAN and Digital TV is designed to analyze the interference from WRAN BS to DTV receiver.

3研究了WRAN和DTV系统共存时的若干问题首先对无线区域网(Wireless Regional Area Network，WRAN)本身网络结构、系统参数和自共存机制进行了研究，仿真验证了WRAN重叠覆盖区基站(Base Station，BS)之间同步的收敛性能；接着设计了一种分析WRAN BS干扰数字电视(Digital TV，DTV)接收机的共存场景，通过研究发现了一些干扰控制的临界值，这些临界值对于WRAN的设计和部署具有指导性意义。

Through this study, the sustainable management hierarchical system of forest ecosystem was established, providing the frame of forest sustainable management which given dominance to the basic hydrology ecosystem processing of mountain forest. At the same time, this research brought forward the "double-cycle" mode maintaining the integrality of Tianshan Mountain forest ecosystem. Within all these studies, on one hand, through the research about the regeneration response to different disturbance types, the scientific measures concerning restoration and rebuilding of fragmentized landscape were supplied. On the other hand, t

建立了森林生态系统可持续经营等级系统，为天山以森林生态系统基本水文生态过程为主导的森林可持续经营提供了框架；提出的天山森林生态系统生态完整性自维持的&双循环&模式为天山森林生态系统的可持续经营奠定理论基础，通过不同干扰方式下天山云杉的更新反应研究，为破碎化森林景观的恢复与重建提供了科学途径，通过对天山云杉分布格局及动态、更新格局、林冠干扰后的系列特征及相应的参数和反映种群生活史的生命表研究，为天山森林生态系统可持续经营景观水平的评价提供了基本参数。

It chooses the number of landscape types as human interference factors to construct artificial neural network model, multi-model adaptive regression splines, support vector machine model and projection pursuit regression model to respectively analog analysis human disturbance on the impact of the landscape diversity, dominance and evenness.

选择景观类型数量作为人类干扰因子，构建人工神经网络模型、多元自适应回归样条模型、支持向量机模型和投影寻踪回归模型，分别模拟分析人为干扰对景观多样性、优势度和均匀度的影响。

In order to achieve good dynamic performance for disturbance rejection, parameter vibration and set point tracking, an intelligent fuzzy self-tuning PI control is used to control the velocity for the piezoelectric ceramic motor.

因此，本论文针对压电陶瓷马达驱动系统参数变动或负载干扰影响，提出一智慧型模糊自调式比例积分控制架构，藉以改善传统比例积分控制的缺点，而得到较佳的系统暂态响应及负载干扰的消除。

Interpath interference which arises due to non-zero cross and auto correlation of more than one spreading code is suppressed by estimating a transmitted signal stream, or a plurality of such signal streams in the case of a plurality of multipath components, respreading this estimated signal and subtracting non-orthogonal interference contributions from a received signal.

通过估计发射信号流或者存在多个多径成分时的多个信号流、将所估计的信号再扩频、并从接收信号中减去非正交干扰分量，抑制不止一个扩频码的非零互相关和自相关引起的径间干扰。

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