混合仿真试验在引信动态设计中的应用

为探索引信动态设计中有效的试验方法，对硬目标侵彻引信及其动态模拟的特点和现状作了分析和研究，认为将数学建模技术和空气炮模拟装置相结合的混合模拟仿真试验是对引信进行动态设计的一种非常有效的方法，并提出利用空气炮模拟试验装置对硬目标侵彻引信的终点碰目标环境进行模拟的设想。     

分布式多传感器目标检测中的数据融合

多传感器目标检测，是近十多年来的一个研究热点。然而运用多传感器实施对目标的检测同时带来了一个新的问题，即如何能由多个传感器所提供的信息实时作了准确的判决？文章证明运用（Ｋ／Ｎ）规则于分布式多传感器目标检测时，存在最佳Ｋ值，使得系统的检测概率高于任一传感器的检测概率，虚警概率低于任一传感器的虚警概率。     

鱼雷非触发引信发展趋势探讨

现代海战是一场高新技术的战争，鱼雷及鱼雷引信只有用高新技术武装起来，才能具有更大威力，本文对未来鱼雷非触发引信的发展趋势谈了些粗浅的看法。     

刚性弹丸对多层复合靶的侵彻分析

本文研究了刚性球形弹丸对间隔靶或多层靶的侵彻问题,这些靶由不同的材料构成.给出了弹丸与靶体相互作用的模型,由它计算出了相互作用的表面在每个时间增量时的变化状态,从而可获得靶的阻力,将这些代入到弹丸的运动方程中,即可得到一个完整的弹丸在击穿靶或未击穿靶时的弹道轨迹.其中靶的阻力从广义的Poncelet方程中求得.这样,经典的静力学和动力系数与靶的材料特性就通过弹腔扩张模型联系起来,所得到的实验结果与计算的穿透结果吻合的较好.     

钨球打钢靶数值仿真研究

通过对钨球垂直撞击钢靶的数值仿真，获得了模拟钨球撞击钢板的整个物理图象，并给出了多种人们所关心的侵彻过程和物理场的演化数据，仿真结果与试验数据有较好的一致性。     

A precursor of β—delayed fission：^230Ac

1 INTRODUCTIONNuclei far from stability are characterized by a IUimer of new phenomena. hi heavyneutron-rich region, one of these is P-delayed fission (PDF), i.e., fission from an exitedstate in which the nucleus tu-rns out to be after P decay. For the first time the existenceof an P-delayed fission island was pointed out by Berlovich and Novikov in 1969.[1]PDF provides the possibility of investigating nuclei far from stability, which is im-possible with ordinary techniques. For exam…     

Unattended words need to be primed to be recognized

The categorical relation between a target word and a flanking, to-be-ignored, nontarget word can influence target response. Although usually taken as evidence of a full and automatic analysis of stimuli whether or not they have been attended, this flanker effect may only point to the failure of focused attention when nontarget stimuli have been primed and made task-relevant. The present study examined the role of priming in the flanker task. In one condition, schematic and semantic priming of nontargets was potentiated by having subjects categorize the target as an instance of a living or nonliving thing. In a second condition, priming was minimized by requiring only a shallow analysis of the target for a response; subjects searched the target for the presence of the letter R. A flanker effect was found only in the categorization condition, and then only when the target was the name of an animal. There was no evidence that unattended nontargets had been fully and automatically encoded to a semantic level.     

对角切片谱法分析信号中相位耦合的频率分量

给出了三阶累积量对角切片谱的性质，分析了水中目标辐射信号的特点，并将3阶累积量对角切片谱法应用于提取水下目标辐射信号中相位耦合的频率分量。以水下某目标辐射噪声的实测数据为例，进行了仿真研究。结果表明，该方法在提取水下运动目标辐射信号中的参加相位耦合的频率分量和相位耦合产生的频率分量、抑制环境噪声和非耦合的频率分量等方面的性能优于自相关谱法。     

道路约束在Kalman滤波中的应用

研究把道路约束引入Kalman滤波的新方法,分析了道路对过程噪声和目标速度的约束,给出了道路约束条件下目标的运动方程以及过程噪声方差调整的方法;将道路对目标速度的约束以伪测量的形式引入测量方程并给出了对应的滤波方程。两个不同场景的蒙特卡罗仿真结果验证了上述新算法带来的性能改善。