基于PLC的引信旋卸控制系统设计

针对引信旋卸危险的难题,设计了基于西门子PLC-135WB的自动控制系统,实现了引信旋卸过程中的自动上弹、旋卸、退弹、防爆等功能,不仅提高了危险作业环节中的工作效率,而且保证了作业过程中的安全性和可靠性。     

应用瞬时谱分析方法验证近炸引信的数字仿真模型

在分析某型近炸引信的工作原理和数字仿真模型的基础上，应用瞬时谱方法分析多普勒信号的瞬时平均频率，验证了近炸引信的数字仿真模型。结果表明瞬时谱是分析多普勒信号这类时变频非平稳随机信号的有效方法。     

水雷磁引信目标识别技术初探

目标识别技术应用于水雷磁引信的关键是目标特征量的提取与分类器的设计。本文提出了舰船目标吨位识别的四维特征向量,设计出完整的二叉树分类器。仿真计算表明,这种特征量的正确识别率在90％以上,为目标识别技术在水雷磁引信中的应用作了有益的探索。     

子母弹子弹引信爆炸物处理安全性研究

子母弹药的应用与发展带来了严重的未爆弹药问题。初步建立了评定未爆弹药危险性的数学模型,并从该模型出发,详细探讨了子弹引信爆炸物处理安全性的设计途径,以尽可能消除未爆弹药隐患。     

Three-dimensional coordinates test method with uncertain projectile proximity explosion position based on dynamic seven photoelectric detection screen

To objectively obtain the three-dimensional coordinates of the projectile fuze proximity explosion when projectile intersects the head of missile target, we propose a dynamic seven photoelectric detection screen test method, which is made up of six plane detection screens and a flash photoelectric dynamic detection screen. The three-dimensional coordinates calculation model of the projectile proximity explosion position based on seven plane detection screens with dynamic characteristics is established. According to the relation of the dynamic seven photoelectric detection screen planes and the time values, the analytical function of the projectile proximity explosion position parameters under non-linear motion is derived. The projectile signal filtering method based on discrete wavelet transform is explored in this work. Additionally, the projectile signal recognition algorithm using an improved particle swarm is proposed. Based on the characteristics of the time duration and the signal peak error for the projectile passing through the detection screen, the signals attribution of the same projectile passing through six detection screens are analyzed for obtaining precise time values of the same projectile passing through the detection screens. On the basis of the projectile fuze proximity explosion test, the linear motion model and the proposed non-linear motion model are used to calculate and compare the same group of projectiles proximity explosion position parameters. The comparison of test results verifies that the proposed test method and calculation model in this work accurately obtain the actual projectile proximity explosion position parameters.     

Dynamic proximity calculations for situation awareness

We apply dynamic proximity calculations (density and clustering) from dynamic computational geometry to a military application. The derived proximity information serves as an abstract view of a current situation in the battlefield that can help a military commander achieve situation awareness. We employ Delaunay triangulation as a computational tool in our framework, and study its dynamic update in depth. © 2003 Wiley Periodicals, Inc. Naval Research Logistics, 2004.     

M739引信头部触发机构发火模式与判别方法研究

针对M739引信头部机构的基本结构与特性,分析其头部触发机构的发火原理,提出发火模式种类的判别方法。结合某型引信的具体参数,计算其对钢板、胶合板和地面三种不同目标介质射击时的碰击力,分析碰击力、防雨机构静态下移抗力及支筒图定抗力对发火模式的影响。试验结果表明,该发火模式判别方法适用于M739系列引信。     

鱼雷电磁引信作用距离不确定性分析

根据鱼雷电磁引信的动作机理与作用参数 ,对影响鱼雷电磁引信作用距离的主要因素———电磁波在海水中的传播特性、目标特性、测距方法、工作频率等进行了分析研究 ,指出了可以提高鱼雷电磁引信作用距离精度和鱼雷装药爆破效果的可行途径 .     

基于相位编码信号的鱼雷主动反舰声引信研究

鱼雷声引信抗干扰性能是鱼雷可靠性设计的重要指标。根据目标舰艇和海面回波的不同相位特性,提出采用相位判别的方法与相位编码信号以及脉冲压缩技术来识别目标的方法,给出了用于反舰声引信信号处理框图,并进行了仿真计算。仿真结果证明了文中提出方法的可行性和正确性。     

无线电引信扫频波辐照效应及作用机理研究

介绍无线电引信扫频波辐照试验系统，在引信本振频率外较宽范围内，对某型引信进行扫频波辐照试验，结果表明：扫频波辐照能使无线电引信误炸，扫频频段不同，误炸干扰阈值不同；扫频步长、频点驻留时间与引信误炸密切相关，但不会影响引信误炸干扰阈值。其作用机理是：扫频波辐照导致引信自差机振荡状态跃变，引信高频电路输出方波脉冲串，推动执行级误动作使引信误炸。