未来空域窗弹丸瞄准点配置方法

推导了未来空域窗理论最优射击密度,按照弹丸命中点误差方差在实际射击密度下应与理论最优射击密度下相同的原则,给出了未来空域窗多弹丸瞄准点的网状配置方法,并给出了未来空域窗射击的实施条件和毁伤目标概率计算公式。算例分析表明,网状配置瞄准点得到的毁伤目标概率,接近未来空域窗射击毁伤目标概率上界,是较优的配置方法。     

舰载小口径舰炮对空碰炸毁伤概率计算与分析

影响小口径舰炮武器系统射击毁伤概率的因素很多,有舰炮系统本身的误差,目标特征以及火炮特性等.文中简要分析了小口径舰炮对空碰炸毁伤模型,通过仿真计算分析,得出火炮发射率、弹丸初速及目标速度对毁伤概率的影响,为以后提高舰炮反导的效果提出了一定的参考意见.     

分布式高炮火控系统空域窗射击方法

针对高炮分布式配置条件下空域窗射击的实现问题,基于分布式高炮之间的协同射击理论和未来空域窗射击理论,提出了时空域射击窗和空间域射击窗2种射击方式。给出了2种射击方式的理论分析及具体实现步骤。时空域射击窗方式通过选择射击时机,实现了弹丸同一时刻对目标同一未来点的火力包围,提高了拦截目标的概率;而空间域射击窗在实现空域窗射击的同时,增加了射击时机。仿真验证结果表明这2种射击方式是可行和有效的。     

小口径舰炮对空碰炸毁伤的概率计算与分析

舰载小口径舰炮对空碰炸毁伤概率数学模型包括设立相关坐标系、舰炮武器系统射击误差分析、若干舰炮一次点射的损伤概率计算及全航路损伤概率计算。计算结果分析基于相应射击目标,即目标特征量、舰炮系统精度、舰炮参数及毁伤判据,包括火炮发射率与毁伤概率、弹丸初速与毁伤概率、目标速度与毁伤概率等关系。     

小口径舰炮的对空碰炸毁伤概率分析

舰载小口径舰炮对空碰炸毁伤概率数学模型包括设立相关坐标系、舰炮武器系统射击误差分析、若干舰炮一次点射的损伤概率计算及全航路损伤概率计算。计算结果分析基于相应射击目标,即目标特征量、舰炮系统精度、舰炮参数及毁伤判据,包括火炮发射率与毁伤概率、弹丸初速与毁伤概率、目标速度与毁伤概率等关系。     

未来空域窗的数学描述

首次用严谨的数学语言描述一一种高炮射击的新体制；未来空域窗，并定量地出它的特性与构成方法，分析了在这种射击体制下对目标的毁伤概率，为基于这种射击体制的火控系统的分析与设计提供了理论依据。     

中低空拦截的新星——俄罗斯“铠甲”弹炮合一近程防空系统

在上世纪八十年代之前，当时用于中低空防空作战的小口径高炮和便携式近程防空导弹是各自独立作战的。其中小口径高炮射速快、弹丸密度大，能形成有效杀伤弹幕，但由于炮口口径小、弹丸威力小，其单发杀伤概率低，对3000米外目标不能形成威胁；近程防空导弹与之相反，其射速快、射程远、单发命中率高，但有射击死角，对付超低空目标效果不好。若将两种武器集成在一起，岂不是会产生“1＋1〉2”的效果？[第一段]     

金属风暴武器阻拦射击面与分布密度关系

为提高金属风暴武器系统射击效能,根据舰载金属风暴武器系统的特点,建立了金属风暴武器系统饱和阻拦射击面和毁伤效能计算的数学模型并进行了实例仿真计算,研究了弹丸总数有限情况下的弹丸分布密度、阻拦射击面与毁伤效能之间的关系.实例仿真结果表明,在弹丸总数有限的情况下,目标命中平均弹丸数与必须毁伤命中数相等时,对应的阻拦射击面和弹丸散布密度能使毁伤概率最大.     

高炮系统对导弹射击效力研究

研究了高炮系统近程反导的射击效力问题，建立了高炮系统对导弹实施着发射击的毁伤概率公式与实施近炸射击的毁伤概率公式，并比较了这两种射击方式的射击效力。     

近程反导舰炮武器系统的发展趋势

近程防御武器系统是舰艇自卫武器的重要组成部分。近年来，大量小口径速射舰炮武器系统稳步发展并装备各国海军，确立了其作为水面舰艇近程防御武器的重要地位。从射速、弹药及弹炮结合3个方面分析了先进近程反导舰炮武器系统的发展的主要趋势。小口径近程反导舰炮武器系统的主要发展趋势是：进一步提高射速以提高武器系统的命中概率；采用不同毁伤机理的弹药以提高武器系统的毁伤概率；采用弹炮结合防空武器系统以增大防御空域，提高抗饱和攻击能力。     

Stability of the Third Generation Intensifier under Illumination

The stability under illumination of transmission-mode GaAs photocathode sealed in the third generation intensifier is investigated by use of spectral response testing instruments. The variations of spectral response with the illumination times under weak and intense illumination are compared. The variations of photoemission performance parameters are also characterized. The results show that during initial several weak illuminations photocathode behaves no evident decay and a maximum sensitivity is achieved, while under intense illumination the sensitivity of photocathode begin to decrease largely at the first illumination. The calculated performance parameters show that the variation of surface escape probability with illumination times is a direct cause of instability of photocathode. It is also found that under intense illumination peak wavelength is moved towards short-wave and peak response is decreased, which shows that the ability of long-wave response of photocathode is decreased.     

Expert Systems Aimed at General Design of Projectiles

Expert systems aimed at the general design of projectiles can implement a series of intelligent designs, such as the design of HE shell, the scheme expounded and proved, the emulation analysis and calculation, etc. Aiming at the product design feature, the expert system adopts the object-oriented knowledge representation and all kinds of inference control engines to describe and reason the relevant knowledge regarding the product through the microcomputer. It embodies the foundation of emulation analysis and simulated manufacturing of the shell. It makes use of the method that knowledge expression is combined with condition of inference to carry out the overall design and emulation and reference.The paper gives the ways through which the functions can be achieved, gives the modularization of reference and the design methods of systematization, puts forward the method of knowledge expression and working interface, and supplies a platform for similar products of the shell category that can be quickly designed.     

Parameter Identification for the Valve Control Cylinder System of a Hydraulic Manipulator

In mechanical, hydraulic and electronic systems, the determination of system parameters is often challenging because liquid parameters often change significantly, due to variations in working and environmental conditions. Therefore, it is of significant practical importance to identify those parameters through experimental procedures. A systematic approach to identifying parameters in the valve controlling cylinder system of hydraulic manipulators is provided. It first derives the transfer function of the system, and then uses P control of PID control to predict system parameters. The predicted parameters are further validated using PID control. The prediction through simulation using MatLab language is utilized, which agrees well with experimental results.     

Software Communication Architecture Implementation and Its Waveform Application

This paper attempts to do a research on the development of software defined radio（SDR） based on software communication architecture（SCA）. Firstly, SCA is studied and a whole reference model of SCA3.0 core framework （CF） is realized; Secondly, an application-specific FM3TR waveform is implemented on the platform of common software based on the reference model; Thirdly, from the point of view of real-time performance and software reuse, tests and validations are made on the above realized CF reference model and FM3TR waveform. As a result, the SCA-compliant SDR has favorable interoperability and software portability and can satisfy the real-time performance requirements which are not too rigorous.     

Three-dimensional Numerical Simulation of Combustion Field in the Combustion Chamber

In order to study the effect of rotation on the combustion in the underwater vehicle, a two-phase turbulent combustion process is described with Reynolds stress turbulence model, eddy-dissipation turbulent combustion model, P-1 radiation model and particle tracking model of liquid. The flow in the rotating combustion chamber is simulated at two different working speeds, 0 r/min and 1 000 r/min by Fluent software. The temperature, gas velocity, static pressure of wall and fuel concentration are computed and compared. The results show that the combustion in rotating combustor is faster and more effective.     

Dynamic Simulation of the Tank Gun Recoil Response

By using the ATV module of MSC. ADAMS, the dynamic simulation of recoil response of tank gun is analyzed.How the recoil force affects the bodywork and the suspension during gun firing, as well as the changing status of the gun muzzle‘s velocity are gained. All results and analyzing methods are offered for the designing basis of optimizing tank vehicle-gun match. The constructive exploration is beneficial to improving the general capability of tank.     

Survey of Controllable Suspension System for Off-road Vehicles

The controllable suspension system can improve the performances of off-road vehicles both on road and cross-country. So far, four controllable suspensions, that is, body height control, active, semi-active and slow-active suspensions, have been developed. For off-road vehicles, the slow-active suspension and the semi-active suspension which have controllable stiffness, damping and body height are more appropriate to use. For many years, some control methodologies for controllable suspension systems have been developed along with the development of modern control theory, and two or more original control methods are integrated as a new control method. Today, for military or civilian off-road vehicles, the R&D of controllable suspension systems is ongoing.     

Passive Acoustic Radar for Detecting Supersonic Cruise Missile

A Passive Acoustic Radar is presented as a necessary complement to electromagnetic wave radar, which will be expected to be an effective means for detecting cruise missiles. Acoustic characteristics of supersonic flying projectiles with diverse shapes are expounded via experiment. It is pointed out that simulation experiment could be implemented using bullet or shell instead of cruise missile. Based on theoretical analysis and experiment, the ““acoustic fingerprint““ character of cruise missile is illustrated to identify it in a strong noise environment. After establishing a locating mathematical model, the technique of acoustic embattling is utilized to resolve a problem of confirming the time of early-warning, considering the fact that velocity of sound is much slower than that of light. Thereby, a whole system of passive acoustic radar for detecting supersonic cruise missile is formed.     

Super-resolution Restoration of Remote-sensing Images

A novel image restoration scheme, which is super-resolution image restoration algorithm Poisson-maximum-afterword-probability based on Markvo constraint （MPMAP） combined with evaluating image detail parameter D, has been proposed. The advantage of super-resolution algorithm MPMAP incorporated with parameter D lies in the fact that superresolution algorithm MPMAP model is discrete, which is in accordance with remote-sensing imaging model, and the algorithm MPMAP is proved applicable to linear and non-linear imaging models with a unique solution when noise is not severe. According to simulation experiments for practical images, super-resolution algorithm MPMAP can retain image details better than most of traditional restoration methods; at the same time, the proposed parameter D can help to identify real point spread function （PSF） value of degradation process. Processing result of practical remote-sensing images by MPMAP combined with parameter D are given, it illustrates that MPMAP restoration scheme combined PSF estimation has a better restoration result than that of Photoshop processing, based on the same original images. It is proved that the proposed scheme is helpful to offset the lack of resolution of the original remote-sensing images and has its extensive application foreground.     

Design and Simulation of TF and TA Controller for Missile

A nonlinear terrain following(TF) and terrain avoidance(TA) controller is proposed for missile control systems. Based on classical TF algorithm (adaptive angle method), a new method for TF controller is proposed by using angle of attack. A method of obtaining terrain outline data from digital elevation map (DEM) for TF control is discussed in order to save store space. A TA algorithm is proposed by using bank-to-turn technique. The block control model, which is suitable for backstepping design, is given for nonlinear model of missile. Making full use of the characteristics of the system and combining block control principle and backstepping technique, a robust controller design method is proposed. Uncertainties in every sub-block are allowed, and can be canceled by using the idea of nonlinear damping. It is proved that the state tracking errors are converged to a neighborhood of the origin exponentially. Finally, nonlinear six-degree-of-freedom simulation results for the missile model are presented to demonstrate the effectiveness of the proposed control law.