单星观测弹道估计的一种新方法

研究单颗卫星利用星栽红外传感器的到达角测量，在具有先验信息条件下，对弹道主动段参数进行估计的问题，提出了一种新的射向平面匹配的建模方法，该方法克服了以往算法模型病态的情况，理论分析和仿真计算结果表明了该算法的有效性。     

A power flow tracing method focused on reactive power and SC

“Tracing the power flow of electricity” is a concept that has become the focus of attention recently, as the deregulation or the liberalization of the electric power market proceeds. Although a number of methods, such as “tracing method by power flow contribution,” have already been published, reactive power contribution has been little studied to date. However, applying “tracing the power flow of electricity” to ancillary service, for example compensation of reactive power, is very important. In this paper, we focus on line flows and static capacitors in particular, and study how to deal with the problem. We perform a computer simulation using a simple system and show the tracing results. © 2006 Wiley Periodicals, Inc. Electr Eng Jpn, 156(1): 33–43, 2006; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/ eej.20118     

时空向量与动态毁伤

该文将空间炸点向量扩展为维时空向量,建立了考虑时间因素的动态射击效率模型.该模型可用于分析毁伤程度随时间的变化规律,比较不同发射法的优劣,确定炮火突然猛烈所需的最初炸点密度,解决最佳射击时域的最有利火力分配等,为理论研究、仿真实验及方法论证等提供了新的参考思路.     

Mistral-3: Parallel solid modelling

This paper describes the design and implementation of Mistral-3, a parallel solid odeller for distributed-memory multicomputers implementing algorithms for creating, ray tracing and incrementally updating octree-based spatial data structures. The system has been designed to be scalable and portable. Scalability is addressed by distributing the control of task and data management between all available processors and portability's solved by building software for the abstraction of a distributed-memory multicomputer. An object-oriented approach to the design is adopted to help produce a structured system. Results are presented showing Mistral-3 has made good use of up to 128 T800 transputers. It has been ported to transputer-and non-transputer-based multicomputers.     

Performance evaluation of multi-sensor data fusion technique for test range application

We have adopted the state-vector fusion technique for fusing multiple sensors track data to provide complete and precise trajectory information about the flight vehicle under test, for the purpose of flight safety monitoring and decisionmaking at Test Range. The present paper brings out the performance of the algorithm for different process noise and measurement noise using simulated as well as real track data     

利用TPS和505实现合成气压缩机入口压力的自动控制

介绍了利用TPS和505调速器的技术实现了对合成气压缩机入口压力自动控制的实施过程。     

基于旅行时线性插值的地震射线追踪算法

本文介绍并实现了一种由Ａｓａｋａｗａ提出的基于旅行时线性插值的地震射线追踪算法（简称ＬＴＩ算法），并在此基础上提出了反射波ＬＴＩ算法。ＬＴＩ算法基于网格单元模型，适用于任意变速介质，可以追踪包括直达波、折射波、透射波等多种射线路径。原ＬＴＩ算法处理初至类型的地震波，而本文将其推广到反射波情况，使其可以应用于计算地震反射波的旅行时及追踪反射波射线路径。通过计算试验及与物理模型实验结果对比表明，用该算     

轴对称两维颗粒轨道模型

建立了火药颗粒运动的两维颗粒轨道模型，用欧拉法这气相场，用拉格朗日法描述固相颗粒，并采用单元内颗粒源方法，对某中心点火结构３０ｍｍ火炮的点传火过程进行了数值模拟。     

Antenna effects on indoor obstructed wireless channels and a deterministic image-based wide-band propagation model for in-building personal communication systems

In this paper, the effects of antenna pattern and antenna polarization on indoor obstructed (OBS) wireless channels are investigated experimentally. Our results show that linearly polarized (LP) directional antennas are more effective in combating multipath components than other types of antennas in OBS channels. The measurement results are verified with a deterministic wide-band propagation model based on image theory that takes into account the effects of building geometry, antenna pattern, and antenna polarization. Preliminary prediction results show that the propagation model holds promise for accurate and efficient in-building wireless channel prediction.     

一个基于LIC的矢量场可视化算法的改进

线性卷积分(LIC)是矢量可视化中的一个强有力的工具。自从1993年被介绍以来,已广泛应用于计算机艺术和科学可视化领域。在LIC计算过程中,流线跟踪是一个很重要的步骤。传统的流线跟踪多采用欧拉积分方法,但该方法计算较复杂,有时会出现积分发散。作者根据矢量场的变化程度,动态地修改积分步长,采用一种变步长的积分方法对矢量场进行流线跟踪。实验结果表明,改进后的算法取得了满意的效果。