电子干扰下遥控导弹的火力控制方法

针对现代空中作战向信息战与电子战方向演进的特点,提出基于干扰状态判断遥控导弹的火力控制方法.该方法通过对自身受干扰状态的判断确定相应的控制策略,当导弹未受干扰时,利用目标的位置信息,采用最短路径对目标进行攻击;当导弹受到干扰时,利用目标的方位信息,采用恒前置角方法对目标进行攻击,所选用的前置角为目标发射干扰前导弹攻击目...     

A platform for initial testing of multiple camouflage patterns

The human visual system is still an important factor in military warfare; military personnel receive training on effective search strategies, and camouflage that can effectively conceal objects and personnel is a key component of a successful integrated survivability strategy. Previous methods of camouflage assessment have, amongst others, used psychophysics to generate distinctiveness metrics. However, the population from which the human observers are drawn is often not well defined, or necessarily appropriate. In this experiment we designed a new platform for testing multiple patterns based on a camouflaged object detection task, and investigate whether trained military observers perform better than civilians. We use a two-alternative forced choice paradigm, with participants searching images of woodland for a replica military helmet displaying Olive Green, Multi Terrain Pattern, US Marine Pattern or, as a conspicuous control, UN Peacekeeper Blue. Our data show that there is no difference in detection performance between the two observer groups but that there are clear differences in the effectiveness of the different helmet colour patterns in a temperate woodland environment. We conclude that when tasks involve very short stimulus presentation times, task-specific training has little effect on the success of target detection and thus this paradigm is particularly suitable for robust estimates of camouflage efficacy.     

Field test and probabilistic analysis of irregular steel debris casualty risks from a person-borne improvised explosive device

Person-borne improvised explosive devices (PBIEDs) are often used in terrorist attacks in Western countries. This study aims to predict the trajectories of PBIED fragments and the subsequent safety risks for people exposed to this hazard. An explosive field test with a typical PBIED composed of a plastic explosive charge and steel nut enhancements was performed to record initial fragment behaviour, including positions, velocity, and trajectory angles. These data were used to predict the full trajectory of PBIED fragments using a probabilistic analysis. In the probabilistic analyses a probability of fatality or serious injury was computed. Based on the results presented, many practical conclusions can be drawn, for instance, regarding safe evacuation distances if a person were exposed to a suspected PBIED.     

Improvement of VIS and IR camouflage properties by impregnating cotton fabric with PVB/IF-WS2

In order to examine the possibility to improve its camouflage properties standard cotton fabric with camouflage print was impregnated with poly(vinyl butyral), PVB and fullerene-like nanoparticles of tungsten disulfide, PVB/IF-WS₂. FTIR analysis excluded any possible chemical interaction of IF-WS₂ with PVB and the fabric. The camouflage behavior of the impregnated fabric has been examined firstly in the VIS part of the spectrum. Diffuse reflection, specular gloss and color coordinates were measured for three different shades (black, brown and dark green). Thermal imaging was applied to examine the camouflage abilities of this impregnation in IR part of the spectrum. The obtained results show that PVB/IF-WS₂ impregnation system induced enhacement of the materials camouflage properties, i.e. that IF-WS₂ have a positive effect on spectrophotometric characteristics of the fabric.     

叶片数对无轴泵喷推进器性能的影响

为丰富无轴泵喷推进器噪声性能优化理论,研究了叶片数对无轴泵喷推进器性能的影响,重点探究了不同叶片数下无轴泵喷推进器内的压力脉动变化规律。基于计算流体力学中的有限体积法离散RANS方程,应用RNG k-ε湍流模型封闭计算模型,采用SIMPLEC进行压力-速度耦合,对不同叶片数下的无轴泵喷推进器内部流场进行了非定常数值模拟计算,并对计算结果进行了详细的对比分析。研究结果表明：随叶片数的增加,无轴泵喷推进器模型的扬程、效率和推力均逐渐增大,叶片表面压力分布更加均匀,叶轮轮缘和中部的压力脉动均明显降低,叶轮进出口主频处的压力脉动幅值从轮缘向中心逐渐减小。     

透视伊朗“禁卫军”——伊朗伊斯兰革命卫队

近来,以美国为首的西方盟国不断在伊朗核问题上大做文章,致使伊朗和西方国家的关系越发剑拔弩张,美国和以色列更是多次扬言要对伊朗进行“先发制人”的打击。波斯湾上空顿时阴云密布。战争一触即发的可能性越来越大。为了展示自己的武力,震慑以美国为首的西方盟国,伊朗频繁举行各种军事演习,伊朗精神领袖哈姆内伊和总统内贾德也多次视察演习的主角——伊斯兰革命卫队,并发表演讲鼓舞士气提升革命卫队的革命和宗教热情,伊斯兰革命卫队亦再度成为世人瞩目的一个焦点。     

注重提高科学决策水平

树立正确的政绩观牢牢把握决策方向有什么样的决策指导思想,就有什么样的决策方向、是非标准和价值追求。领导干部端正决策指导思想,弄清“为谁决策、决策为谁”,必须以科学理论为指导,认真学习党的路线、方针、政策,学习条令、条例、规章制度,用政治上的坚定和思想道德上的纯洁保证秉公用权,使决策指导思想始终不离“立党为公、执政为民”的轨道,进而把握决策的正确方向。(一)着眼可持续发展,力戒就事论事。有的领导干部对部队建设缺乏长远考虑,想的只是怎样解决眼前遇到的难题,最多考虑到自己任期内的事,这样就事论事作出的决策,能对现实…     

舰载防空导弹系统的防御能力评估

反舰导弹是当今舰艇及编队面临的主要威胁。为评估反舰导弹攻防能力,以目前世界上防御能力最强的美国航母战斗群为背景,研究采用分层火力配置的航母舰队防御体系对付反舰导弹的有效性。首先分析反舰导弹飞行高度、雷达散射截面及综合效应对防御系统中雷达探测能力的影响,之后应用简化公式,对各类典型舰载对空防御武器的最大拦截距离、拦截次数和拦截效率进行量化分析,对防御反舰导弹能力做出评估。     

"堡垒"计划的破产罗科索夫斯基元帅忆库尔斯克战役准备工作

承蒙解放军出版社同意和支持．刊登《罗科索夫斯基元帅战争回忆录》(解放军出版社,2003年1月)摘选。所选章节为罗科索夫斯基元帅参与库尔斯克战役的内容。因文章篇幅较长,有删节,题目为原章节标题, 小标题为编者所加。     

如何积累备课资料

在基层检查政治教育时,经常听到一些基层政工干部反映：“基层的教育资料太少了,希望机关能多给基层发一些参考书籍。”应该说,这一要求不算过分。但要认识到,上级多编发一些备课参考资料仅仅是一方面,关键还是要靠基层政工干部自己动手来收集整理教育资料。报刊杂志是采撷资料的主要来源。一谈到收集资料,一些基