跟踪

In order to make the new recursive method convergence fast, the RLS-like forgetting factor is introduced to construct the new data Hankel matrices. In the framework of subspace methods, the gradient type subspace tracking method is used to implement the update of the state subspace, which results the unbiased estimate. Different from traditional offline method, the system matrices are recursively computed using RLS method. The convergence analysis of the proposed method is given and finally, the efficiency of this method is illustrated with a simulation example.A new closed-loop identification method is proposed to implement consistency estimation of closed-loop subspace identification.

引入RLS-like遗忘因子机制构造新的数据矩阵，更好地跟踪系统时变信息，提高递推算法的收敛速度；在子空间辨识框架内，采用梯度型子空间跟踪算法实现对状态子空间的更新，避免了子空间近似带来的估计有偏性；与传统的离线算法不同，在得到系统状态子空间后，基于递推最小二乘方法提出新的算法，实现对系统矩阵的递推估计；并给出递推子空间辨识算法的收敛性分析；最后通过仿真实例验证算法的有效性。

To solve the nonlinear problem in the Bearings-Only Tracking, an Unscented Particle Filter tracking method is proposed.

摘要为处理纯方位跟踪中的非线性问题，提出了一种Unscented粒子滤波跟踪方法。

Because bending and being tracked of sound line make torpedo tailing after target to smaller depth,upper limit control trajectory is usually considered in torpedo trajectory design.

由于声线弯曲和鱼雷跟踪声线，使鱼雷跟踪目标到较浅深度，因此鱼雷弹道设计通常有上限控制弹道。

The key point with this method is the identification of terms, known as workless forces, which appear in the dynamic equations of active filter but do not have any effect on the energy balance equation of the closed loop.

基于此，将PBC方法与自适应控制相结合，实现线路参数与负载变化时参考谐波电流的准确跟踪，并有效抑制由电阻、电感变化引起的跟踪误差。

Zero phase error tracking control method can improve the tracking performance of servo system, but there still exists problems such as weak robustness and gain error.

零相差跟踪控制方法可以提高伺服系统跟踪性能，但仍存在鲁棒性不强和增益误差的间题。

This paper introduces the fundamental principle of smoothness and prediction in use of grey theory in passive angle tracking, and constitutes the module of smoothness and prediction based on the grey algebraical curve model.

介绍了利用灰色理论在无源角度跟踪中进行平滑预测的基本原理，建立了基于灰色代数曲线模型的平滑预测模块，并通过计算机仿真说明灰色代数曲线模型较灰色微分方程等其它几种模型更适合于无源角度跟踪中的平滑预测，并就几种模型的应用范围作了比较。

The heating mechanism of chromosphere from coronal soft X-ray radiation, was introduced self-consistently for first time; in numerical technique, we developed an elaborative method to resolve and track the transition region as well as chromospheric condensation.

在计算方法上，提出了增加辐射损失项循环来迭代求解动力学方程组的总体计算方法；并详细阐述了精确分辨和跟踪过渡区的网格调整方法，包括插入、消去和跟踪色球压缩区的方法，并就整个计算实现过程进行了讨论。

Consequently the NN adaptive unit is added into the control loop according to the NN on-line approximate property. Lastly the chapter combines the proposed shortest path-planning method and the adaptive tracking method in order to stabilize the NWMR about a posture through the shortest path. Many simulations are carried out on MATLAB and the simulation results are very feasible and reasonable. Chapter 5 proposes a new localization method for the WMR running on inclined planes based on fusion of clinometric and an odometric data by Kalman filter.

本文首先求得了在斜面上运行的NWMR动力学系统的状态方程；接着选择了适当形式的系统输出方程，采用非线性系统解耦方法对该系统实现了输入—输出线性化，并应用线性系统方法进行镇定；然后提出了基于人工神经网在线逼进NWMR动力学特性的自适应跟踪控制方法；最后将本文最短距离路径规划方法与跟踪控制方法相结合实现了NWMR系统状态镇定，并通过仿真实验证明了该方法的有效性。

In the research on target tracking, lots of experimental results illustrated that the particle filter algorithm is imperfect to the moving target of which the trajectory changes complexly.

在目标跟踪研究中，大量的实验证明粒子滤波算法对于运动轨迹变化复杂的运动目标跟踪效果不理想。

By using Digital-Trailing-Filter and DSP technology, we got solution of trailing filter for transient signal in frequency-scan test,so as to refine the needed test signal from the deformative and weak signal.

通过采用数字跟踪滤波和DSP处理技术，解决了扫频测量中瞬态信号的跟踪滤波，使仪器能够在畸变的、微弱的信号中提取出需要的测试信号，同时使仪器的测量时间大大缩短。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。