In this paper, a search method based on the area of triangle and quadrilateral is presented to solve the problem of recognition of abnormal data in trajectory tracking system.

研究弹道跟踪系统的异常数据识别问题，导出了一种基于三角形和四边形面积的异常数据识别的搜索方法。

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Currently how to search for an optimal trajectory becomes an important aspect in trajectory planning and control's fields.

目前在飞行器航迹规划和航迹控制这一研究领域中，寻找飞行器最优航迹成为一个重要的研究方向。

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The algorithm uses the thought of delamination, makes local planning and global planning combination, and improves cost function, finally with ensuring optimal trajectory increases search efficiency.

该算法采用分层思想，将局部规划与全局规划相结合，并对代价函数进行了改进，在保证航迹优化的基础上，提高了搜索效率。

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Authorities and rescuers used the trajectory of the helicopter and cell phone signals from Ruppert's phone to narrow down the search area.

CNN: STORY HIGHLIGHTS

Kayak received close to 900 million search queries on its website in 2011, a 42% increase from 2010, and we expect the upward trajectory to continue for the rest of our forecast period.

FORBES: How Big Of A Threat Is Google To Kayak?