查询词典 tracking

This paper gives the time domain integral constraints of the feedback control systems tracking error that arise from the presence of stable zeros on or near the jω-axis, which shows that for a linear time invariant system, in order to guarantee the stability of the closed-loop system, the time domain integral constraints must be satisfied by the tracking error.

本文给出了反馈控制系统接近虚轴或虚轴上的稳定零点对跟踪误差的时间域积分约束。这一时间域积分约束是任何一个线性时不变系统为保证其闭环系统的稳定性，其跟踪误差必须满足的。

Second, the theory of scale space was used to design a new operator for target detection and tracking. Then, the property of scale invariant was analyzed and proved, and a tracking scheme based on the gradient LOG operator was proposed. Experimental results show that the gradient LOG operator is appropriate to describe small target in complex background, and the detection precision is in the level of sub-pixel. Furthermore, it is efficient and robust to noise.

然后根据尺度空间的基本理论构造了一种针对该成像模型的目标检测算子，分析并证明了该算子具有尺度不变性的优点，设计并实现了基于梯度LOG算子的小目标跟踪方案，实验结果表明：梯度LOG算子能够较好地跟踪复杂背景中的光团目标，定位精度可达亚像素级，且具有计算量小，抭嗓声能力强等优点。

Second, the theory of scale space was used to design a new operator for target detection and tracking. Then, the property of scale invariant was analyzed and proved, and a tracking scheme based on the gradient LOG operator was proposed. Experimental results show that the gradient LOG operator is appropriate to describe small target in complex background, and the detection precision is in the level of sub-pixel.

然后根据尺度空间的基本理论构造了一种针对该成像模型的目标检测算子，分析并证明了该算子具有尺度不变性的优点，设计并实现了基于梯度LOG 算子的小目标跟踪方案，实验结果表明：梯度LOG 算子能够较好地跟踪复杂背景中的光团目标，定位精度可达亚像素级，且具有计算量小，抗噪声能力强等优点。

The objective of this research was control a long stroke inchworm type positioning stage. Consider the factors that may affect positioning precision include the nonlinearity of piezoelectric actuator and phase lag cause by feedback control. Use model of hysteresis and zero phase error tracking controller to improve the tracking ability and reduce the phase lag of the system.

因此在本研究中，对於一个蚇蠖式长行程平台研究控制方法，考虑可能影响定位精度的因素，包括压电致动器的非线性特性与系统因为闭回路控制架构造成的响应相位落后现象，利用迟滞数学模型的建立与零相位误差追踪控制器的设计来改善系统的追踪能力与相位误差。

To realize the real-time tracking of the shoot point from light pen,the Camshift tracking algorithm is chosen,but it is difficult to track the point with dynamic and complicated background and in case that there is similar color with the shoot point.

为实现对光笔投射点的实时跟踪，采用了Camshift跟踪算法，但是该算法在动态复杂背景及在颜色相似的背景区域中不能很好地进行跟踪。

Experiments showed that combined with the local maximum tracking algorithm, this template is suitable for tracking human body and human face.

同时结合局部峰值跟踪算法在对人的整体运动跟踪和人脸部跟踪中取得较好的效果。

With the advent of the CHAMP and GRACE satellite missions, satellite gravimetry has opened a new era featuring high spatial resolution and accuracy. These two missions provide continuous satellite tracking data in a high-low and a low-low satellite-to-satellite tracking scenario.

卫星重力测量之蓬勃发展，使得卫星追踪卫星技术趋近成熟，而低轨卫星CHAMP、GRACE重力卫星任务之成功升空，更是开创了卫星重力测量迈向高精度高解析度的新纪元。

A novel star tracking algorithm for a star sensor with a large angle manoeuver is presented to avoid disadvantages of classic star tracking algorithms.

本文提出了一种新的星跟踪算法来克服飞行器在大角速度飞行情况下传统星跟踪算法处理时间过长等不足；为了消除由于系统噪声带来的误差，还提出了星图滤波和星像滤波的方法。

In order to ensure the consistency of the closed-loop system performances, before the AFC is applied, a supervisory controller is used to drive initial tracking errors to a preset closed area, and then the AFC can drive the tracking errors of the closed-loop system to pre-specified neighborhood in the presence of unknown approximation errors of the fuzzy logic system.

为保证系统性能的一致性，在启动自适应模糊控制器前，采用监督控制将初始跟踪误差镇定到给定范围。自适应模糊控制器可在存在模糊逻辑系统逼近误差的情况下，使系统跟踪误差小于预先给定的任意常数。

A method based on multi-hue-blob correlation matching voting is proposed to solve target tracking problem of the moving target under occlusion efficiently in nonrigid target tracking.

针对非刚体运动目标被遮挡的跟踪问题，提出一种以目标色斑子块相关匹配联合推举的跟踪方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。