基于Bayes小子样理论和序贯网图检验的武器装备测试性验证试验方案设计

针对当前序贯概率比检验方法会导致测试性验证样本量无法控制,以及序贯网图检验方法未能利用先验信息使得确定的样本量仍然存在可能较大的问题,提出一种基于Bayes小子样理论和序贯网图检验相结合的测试性验证样本量确定方法。基于序贯网图检验方法,结合测试性指标的先验分布以及相关参数约束值,划分指标参数空间,并给出Bayes因子及其阈值计算方法;通过对检验点插入位置的确定,给出测试性验证所需最大样本量,同时在考虑使用方风险和承制方风险的基础上设计Bayes小子样理论下序贯网图检验的截尾策略;通过实例进行了验证,并与经典验证方法、序贯概率比检验方法、传统序贯网图方法以及验后序贯加权检验方法进行了对比分析。结果表明,该方法确定的测试性验证截尾样本量以及平均样本量均优于其他方法,同时能有效降低双方风险值。     

武器装备小子样维修性试验与评定方法研究

为了对小子样条件下武器装备维修性试验指标作出合理的验证,并且节约试验成本,本文在分析常用维修性评定方法不足的基础上,针对武器装备小子样维修性试验的特点,从工程角度出发,利用Bayes理论和验前信息,提出了利用序贯验后加权检验（SPOT）方法以及截尾SPOT方法对维修性指标进行验证评定。最后结合某型鱼雷发射装置的维修性试验与评定问题,说明该方法的有效性和可行性。     

反舰导弹维修性试验样本量确定方法改进

针对反舰导弹系统设备价格昂贵、模块化程度高,在维修性试验中不宜设置过多故障样本的特点,对G JB2072—94《维修性试验与评定》附录A中试验样本量的确定方法提出了改进意见,使维修性试验方案更具可操作性,降低了试验成本,缩短了试验周期.     

反舰导弹维修作业样本分配方法改进

结合靶场导弹维修性试验鉴定的实际,当自然故障数不满足维修作业样本量要求时,就要采用模拟或假设故障弥补样本量的不足。采用模拟故障或假设故障进行维修作业,就需要将试验样本合理分配到导弹的各可更换单元上,以充分验证整弹的维修性。针对《维修性试验与评定》中的维修作业样本按比例分层抽样分配法提出了改进意见,避免了重复性维修作业,提高了维修作业样本分配的可操作性。     

基于概率圆序贯检验的弹道一致性评定方法

现行弹道一致性评定方法的评定结果受弹丸散布、试验组数、每组用弹量等影响较大.基于数理统计、射击理论和序贯试验理论,提出了一种基于概率圆序贯检验的弹道一致性评定新方法.主要优点是检验结果不受组数和用弹量的影响,使研制方和使用方所承担的风险基本相当,能够减少试验的用弹量并节约试验成本.采用该方法分析了以往弹道一致性试验数据,结果表明,该检验方法具有一定的适用性和工程应用价值.     

基于序贯分析的制导弹药命中精度试验一次抽样方案

针对制导弹药命中精度靶场试验中采用一次抽样试验方案有时所需样本量较大,而采用序贯概率比检验方案时累积试验数变动幅度又较大的问题,提出了基于序贯分析的一次抽样试验方案。该方案将一次抽样方案和序贯分析试验结合了起来,综合了两者的优点.实例分析结果表明,该方案在保证试验精度的同时,有效地减少了累积试验数,提高了试验效率。     

维修性试验中试验样本量确定方法的研究

维修性试验中要进行维修作业,每次维修算一个样本.只有足够的样本,才能反映总体的维修性水平.根据试验样本维修时间的不同分布类型,论述了不同的样本量确定方法,为装备维修性试验中如何确定样本量提供了一种依据.     

基于Bayes方法的航空子母炸弹制导精度分析

针对风修正系列航空子母炸弹的制导精度鉴定问题，根据炸弹的试验投放情况和毁伤机理，讨论了毁伤效能战术指标与制导精度指标之间的关系。在小子样条件下，运用Bayes理论方法，提出了航空子母炸弹的制导精度和布撒均匀度鉴定方案，研究了对Bayes SPRT序贯方法的改进。仿真结果表明：所提出的方案可以减少所需的试验样本量，可以用于小子样条件下航空子母炸弹的精度鉴定问题。     

基于序贯截尾检验的一维修正弹精度评估方法

基于序贯截尾检验方法,对一维修正弹的落点密集度的评估方法进行了研究,采用Monte-carlo法给出了数值算例,仿真计算结果表明,通过序贯截尾检验方法,能够有效减少试验次数,缩短试验周期,能够为该型信息化弹药的试验鉴定提供理论参考,具有较强的理论价值和一定的参考意义.     

导弹试验中序贯检验及序贯截尾检验方案的优化设计

针对序贯检验和序贯截尾检验方法在工程实际应用中存在的一些难以解决的问题，且给试验带来一定的误差，采用蒙特卡洛随机模拟方法和现代优化设计思想，对战术导弹试验中的序贯检验和序贯截尾检验方案进行优化设计，取得了较好的效果．虽然针对导弹试验中常用的二项式分布参数的检验进行讨论，但这种优化设计方法同样适用于其它分布形式的序贯检验和序贯截尾检验．     

Method for Measuring Velocity of Warhead Fragments Based on Photoelectric Detection

For measuring velocity and impacting position of single fragment of warhead, a non-contact measuring method is proposed, in which a six-light-screen array, a position indicator, a multi-channel chronograph and a computer are used.The principle of measurement is described. The key device of the system is a light screen array sensor which consists of six light screens allocated with certain geometrical parameters. When the fragment flies through the light screen array, the time of passing through each of the screens is recorded by the multi-channel chronograph. According to the time data and the geometrical parameters of the array, the velocity vector and the location of the fragment can be calculated immediately. The presented method can be used to locate the fragment and to measure the real velocity on its flying direction. It can also be used to measure the velocity of a fragment swarm after the system is engineered further.     

数码电子雷管中影响点火头性能因素分析

阐述了数码电子雷管中,点火药剂细结晶三硝基间苯二酚铅（LTNR）的制备工艺;从点火药剂的种类、加入黏合剂的质量分数、桥丝直径、点火头的电阻值、防潮漆的蘸涂等方面对点火头性能的影响因素进行了探讨;通过震动试验、并联起爆试验、延期精度检测与考核,试验结果表明：一次性合成的细结晶LTNR是制造数码电子雷管点火头较为理想的点火药剂,按技术要求生产的点火头性能指标能够满足行业标准要求。     

Open Rule-setting System Applied to Conceptual Design of Engines

Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.     

Research on Linux Network Device Driver

By analyzing the working principle of Linux network device driver, discussing the Linux network driver structure and its key technologies, the general network driver structure and its design methodologies in Linux system are summarized. Through modifying the network device driver of Linux device driver 3rd version snull, c and improving the COW technology, the Zero-Copy technology in Linux （kernel version 2.6.11 ） is implemented. In the end, the success test tells us that the thorough analysis of network device driver is the foundation of many applications, and it also provides a certain improvement to a lot of real applications, even to military application development.     

Design and Implementation of One Missile Visual Simulation System Based on OpenGL

The implementation of a missile＇s visual simulation system is explained that is developed with OpenGL（open graphic library） and the flight path and flight carriage in different stages of the missile are displayed. The establishment problems of the 3D scene are circumstantiated including the construction and redeployment of the model, creation of the virtual scene, setting of the multi-viewports and multi-windows etc. The missile＇s data driver, system flow, the modules and their mutual relations of the missile visual simulation system are discussed. The missile flight simulation results and effect of the scenes are given.     

Dynamic Encryption Technology in Ad-hoc Networks

A new dynamic encryption application in ad-hoc networks is proposed. The advantages of this method are its being able to use the previous ciphertext as a seed of a new encryption process, rendering the encryption process effective in all communication process by continuous dynamic key generation together with synchronization, and its capability to cut back on system bandages to a greater extent, which is valuable for the ad-hoc circumstance. In addition, the rationality and effectiveness of this novel encryption method have been verified by the test results.     

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.     

An Experimental Study on Electro Chemical Machining of Microelectrode

Puts forward a new method in machining microelectrode by electro chemical machining （ECM） and plastic deformed theory. The procedure of this method is to machine the microelectrode according to the basic rule of ECM theory at first. Then, with the change of ECM machining parameters, one of the microelectrode ends is exerted by a load. As a result, the elastic and plastic deformation is produced at the machining section and the microelectrode diameter is reduced. It has been proved that the proposed method can determine the optimum machining parameters to machine the microelectrode of Cu.     

Unscented Kalman Filter for Autonomous Warship Attitude Determination

To address a problem of autonomous attitude determination algorithm using gravitational field and geomagnetic field observation, a new recursive optimization autonomous attitude estimation algorithm is proposed. The algorithm is based on unscented Kalman fiher(UKF), and can synchronously provide the attitude rate information. The simulated results show that the measurement precision of the method could be increased by 2 times compared to that of the common methods.     

Error Coefficient Estimation of Inertial Platformin Its Calibration

The error coefficient estimation of inertial platform in the course of its consecutive ground calibration is studiedA separate-bias algorithm is adopted to estimate the error parameters effectively. The ill-conditioning problem of the equation solution caused by the huge state dimension is also resolved. And the simulation result shows its validity.