In view of maneuvering target tracking in cluttered environment, this paper reviews two existing gating techniques, namely, Model Based gating (MBG) and Centralized gating (CG).

针对杂波环境下跟踪机动目标问题，研究了两种现行的跟踪门，模型跟踪门(mbg)和集中跟踪门(CG)。

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This method is oriented to theoretical prediction of the quasi-straight- forward propagating photons. It will provide solid basis for systematic investigation of time-gating imaging techniques.

利用该方法可以快速进行准直线传播光子的理论计算，为系统地研究时间门成像技术提供了坚实的基础。

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In this paper, water has been used to simulate the bottom-sides gating system of the large hydro-turbine blades by means of high-speed and continuous photographic techniques.

采用高速摄影、连续拍照等技术手段，对大型水轮机叶片底侧式浇注系统的充型过程进行了水力模拟研究。

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