To improve the performance of passive tracking, the Gaussian sum particle filter (GSPF) was proposed.
为提高被动跟踪性能，提出了一种高斯和粒子滤波方法。
On the theory of SOPLAT based on particle kinematics, this paper introduces a SOPLAT system made up of a fire control radar and a passive location subsystem.
本文从基于质点运动学的单站被动定位跟踪理论出发，介绍在已有的火控雷达本体上增加一套被动定位子系统所构成的单站被动定位跟踪系统。
It was found in experiments that the particle polishing could eliminate the passive effect of hydrogen evolution and nickel deposits electroformed without pinholes and pits could be achieved by APEF.
试验发现，游离粒子磨擦能彻底消除析氢的不利影响，利用磨擦辅助精密电铸技术能够制造出没有任何麻点、针孔等缺陷的镍电铸层。
It was found in experiments that the particle polishing could eliminate the passive effect of hydrogen evolution and nickel deposits electroformed without pinholes and pits could be achieved by APEF.
试验发现，游离粒子磨擦能彻底消除析氢的不利影响，利用磨擦辅助精密电铸技术能够制造出没有任何麻点、针孔等缺陷的镍电铸层。
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