Once at the tracking station, Greg reached into the tiny hole and packed grease around the failed bearing.
格雷格·福思一到站里，立刻就把他的小手伸进了这个小孔并把油脂涂抹在已经失效轴承的四周。
The model with the two-buoy arrays used for tracking of underwater moving target for bearing estimation is presented, and the spatial distribution of tracking accuracy is described.
介绍了具有方位估计功能的二元浮标阵用于跟踪水下动目标的模型，并描述了跟踪精度的空间分布。
It features high sensitivity, high bearing accuracy and advanced performance in detection, tracking and system expansion.
它具有较高的灵敏度，高的测角精度和先进的检测、跟踪和扩容性能。
Based on the sequent tracking observation on spalling of GCr15 bearing steel under rolling contact fatigue, an expression for estimating the propagation of subsurface cracks was derived.
本文在对轴承钢接触疲劳剥落过程进行连续追踪观测的基础上，推导了次表面裂纹扩展的估算公式。
Tracking target by using anti-helicopter mine (AHM) is actually the bearing-only measurement because precision of range detected by passive acoustic measurement cant satisfy the need of tracking.
目前被动声探测距离精度还不能满足跟踪的需要，因此，反直升机智能雷对目标的跟踪问题归结为仅有角测量的跟踪问题。
Self adaptive tracking algorithm for maneuvering targets by high-sampling-rate bearing-only passive sensor is investigated.
研究了仅有方位角测量信息的单被动传感器对机动目标的自适应跟踪方法。
An underwater target tracking method applied in submarine, i. e, tracking a target with bearing measurements plus its known speed, is analyzed. Some unique properties are unearthed.
对潜艇水下跟踪目标的一种方法-多方位-速度法进行了深入分析，发现它具有独特的性能。
There are two main problems in bearing-only tracking: system's nonlinearity and inscrutability of the range of target.
被动式目标跟踪主要存在两个问题：系统非线性和距离不可观测性。
The estimate algorithm of the location of the target solved passive location and tracking to a moving target with triangle bearing location algorithm by using the information from two stations.
提出的算法是利用两个观测站测得的信息，应用三角交叉定位法，对运动目标辐射源位置的估计算法进行了研究。
The conventional bearing only measurement tracking filter is unable to track a maneuvering target.
传统的仅有角测量跟踪器不能跟踪机动目标。
The simulation results indicate that the variable cycle RP-EKF algorithm can resolve the filtering instability of EKF for the bearing-only target tracking and the time-delay problem.
仿真结果表明变周期距离参数化扩展卡尔曼滤波算法能有效解决经典扩展卡尔曼滤波算法在纯方位角目标跟踪时可能出现的滤波发散现象，并能处理声音信号的传输时间延迟问题。
The simulation results indicate that the variable cycle RP-EKF algorithm can resolve the filtering instability of EKF for the bearing-only target tracking and the time-delay problem.
仿真结果表明变周期距离参数化扩展卡尔曼滤波算法能有效解决经典扩展卡尔曼滤波算法在纯方位角目标跟踪时可能出现的滤波发散现象，并能处理声音信号的传输时间延迟问题。
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