跟踪

The conclusion is that the extent of the zenith blind zone was restricted by three parameters: maximum azimuth angular velocity of tracking mount, flight level and airspeed of the target. In astronomical coordinates (reference mark is north latitude 43.9 ), analyzed is the effect of azimuth angular velocity, acceleration and altitude angular velocity, acceleration etc. Some formulae were given to compute all correlative quantities.

在观测坐标系中推导出确定天顶盲区理论范围公式和满足过天项跟踪条件的关系式；在天文坐标系中以长春卫星观测站(北纬43.9°)作为计算基准，分别讨论了方位、俯仰方向的角速度、角加速度等对天顶盲区的影响，在理论分析上为解决过天顶跟踪问题打下了基础。

In many instances, victims usually know their stalkers and 81 percent of women victims are also physically assaulted by their stalker.

在许多情况下，受害者通常知道自己的跟踪者和81％的女性被害人也有被他们的跟踪者人身攻击。

China may have as many as three OTH skywave radar systems to track maritime movements in China's contiguous seas and most likely to serve as part of an effort to develop the capability to track and target US aircraft carriers.

中国可能拥有多至三部超视距天波雷达系统，用以跟踪中国邻近海区的海上活动，最有可能作为发展跟踪和瞄准美国航空母舰的能力的一个组成部分。

To guarantee tracking precision, the relation between the tracking control error and the output torque of the controller is analyzed from the point of engineering. Then an effective replanning scheme is presented, where fuzzy logic is used to weight the maximum joint torque according to the control error.

为保证跟踪精度，从工程的角度分析了跟踪控制误差与控制器输出力矩的关系，提出了根据控制误差对关节最大力矩进行模糊加权的二次规划方案，是一种便于实际工程应用的有效方法。

The principle of the novel single-phase hybrid active power filter is described in detail. Based on the above analysis, Kalman filtering approach for estimation of harmonics is presented to improve the speed and precision of harmonic detection, and it also can avoid the influence made by voltage distortion on harmonic detection. A new current control strategy based on energy balance is presented to regulate the active part absorbing or releasing active power and control the inverter to produce current opposite to the harmonic current reflowing in injection branch, the above method combined with harmonic current tracking control that keeps the stabilization of dc-side voltage and improve the reliability of the system.

并详细分析了系统的滤波原理，提出了基于卡尔曼增益自调整的改进型动态谐波含量估计方法，能够快速准确的跟踪检测电网谐波电流，并且克服了电力机车等冲击性负荷引起的电网电压畸变对谐波检测精度的影响；提出了基于逆变器两侧能量平衡的电流控制方法使有源部分吸收或释放一定有功或无功功率及产生与注入支路回灌谐波电流相反的抑制电流，然后联合电网谐波电流跟踪控制以获得系统参考信号，保证了直流侧电压的稳定，提高了装置可靠性，增强了系统滤波性能。

It is very important to research on the problem of the zenith blind zone and correlative technology in theory and practice. Research also leads to some di...更多rections for future investigation.In the dissertation the development actuality of correlative tracking technology around the zenith are summarized by the numbers.

本文以测星精密光电望远镜和地基激光反卫星跟踪望远镜项目为课题背景，在系统的总结国内外过天项目标跟踪技术发展现状的基础上，归纳出三种解决方案：方位轴倾斜方法、增设次俯仰轴方法、程序引导方法。

A neural model is described how motion integration and segmentation processes, both within and across apertures, compute global motion percepts.

该模型描述了如何计算特征跟踪信号，以及特征跟踪信号这种确定性信号是如何捕获衍生出的有歧义的运动信号的。

An improved Mean-Shift-based tracking algorithm was proposed to solve the poor tracking ability problem in occlusions.

针对经典的Mean-Shift算法在目标发生遮挡时容易导致跟踪失败的问题，提出一种改进的均值偏移跟踪算法。

Using blue tape I made a track to follow and a razor saw to cut it.

使用蓝色的磁带，我曾跟踪，以跟踪和剃刀看到削减。

On the basis of general double closed-loops PID position tracking design of theodilite, the step-by-step integral separate PID control method is introduced, the calculation shows that it can effectively restrain overshoot, track position smoothly, and is helpful to reaction wheel control.

在通常的经纬仪双闭环PID位置跟踪设计基础上，在位置环引入步进式积分分离PID控制策略，计算表明，其可以有效抑制超调，较为平缓的实现位置跟踪，利于反作用轮的角动量平衡作用。

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。