捷联惯导陀螺仪冗余配置研究

为了有效提高提联惯导柬统的可靠性，对提联惯导陀螺仪冗余配置方案的束统优化进行了研究，介绍了冗余配置原则，结构方案对比与选择及相应的可靠性评估等内容。通过采用加权最小二乘法等数据处理方法，给出了计算结果。该结果表明，工程上捷联惯导陀螺仪冗余配置是应当而且能够实现系统最优化设计，选择教优配置结构。     

一种机载平台/弹载捷联惯导系统余度配置方法

文中介绍了一种以弹载捷联式子惯导为参考的平台/捷联故障检测技术,提出了利用主、子惯导系统中的6路加速度计信号进行余度配置的方案、逻辑及流程,该方案为机载主惯导系统的余度配置提供了一种有效途径.     

捷联式惯导系统在自行火炮上的应用

基于捷联式惯导系统的自行火炮火控系统结构简单、成本低、可靠性高，且可采用一次调炮，调炮速度快、直观、精度高，减少了火控系统反应时间。惯导系统的安装工艺简单、测量直接，减少了误差环节。与平台式惯导系统相比，捷联式惯导系统的尺寸和质量大为减少、可靠性高。随着计算技术的发展和捷联式系统用光纤陀螺和激光陀螺的性价比的提高，捷联式惯导系统在自行火炮火控系统中将越来越多的得到应用。     

激光陀螺仪的测试实验研究

对KM-11型的激光陀螺仪进行了性能参数的测试，用一种新的测试方法对表征激光陀螺性能的参数进行标定，给出了各个参数的值，为激光捷联惯导的工程应用提供参考。     

捷联式惯导系统及其软件可靠性的测试研究

文章分析了捷联式掼导系统的含义及其构成,介绍了捷联式掼导系统的软件系统的测试方法和可靠性分析方法,用这种方法,可以高效地对捷联惯导系统的软件系统进行测试.同时,选定了一种错误查出的指数类增长模型,对捷联惯导系统的软件可靠性进行了重点分析.     

激光陀螺与鱼雷捷联惯导

本文在给出惯性技术和惯导系统的有关概念的基础上，重点阐述了新型惯性器件激光陀螺的原理、性能及技术概况，提出激光陀螺捷联式惯导系统更适合于鱼雷武器，它是鱼雷惯导的优选方案。     

激光陀螺仪零偏稳定性研究

采用 CST 方法和最小二乘法对激光陀螺仪的零偏数据进行了处理和拟合,求出处理后数据中各噪声的误差系数,为激光陀螺仪在鱼雷捷联惯导中的应用奠定了基础。     

速率捷联惯导系统工具误差计算与补偿研究

针对采用惯性制导的弹道导弹,开展速率捷联惯导系统工具误差计算与补偿研究.给出速率捷联惯导系统的测量模型和工具误差模型,推导了加速度计和陀螺仪的工具误差补偿公式,并进行了仿真计算.根据仿真结果,分析了各工具误差系数偏差对导弹落点精度的影响,证明了补偿算法的有效性,为捷联惯导系统工具误差补偿和提高弹道导弹制导精度提供理论依据.     

有限状态机在捷联惯导系统软件设计中的应用

对有限状态机在捷联惯导系统中的应用作了比较全面的论述.首先,对有限状态机的数学模型进行介绍,然后分析了捷联惯导系统的一般组成和捷联惯导软件的特点.最后,详细介绍了有限状态机在捷联惯导系统软件设计中的应用.     

直瞄式近程旋转火箭弹的捷联惯导系统建模研究

捷联惯导系统通常应用于较远射程的导弹等飞行器上,近年来,随着惯性器件的微型化和低成本化,使其在近程小口径火箭武器上的应用成为可能.在近程武器上仍采用原有的捷联惯导解算方法则过于复杂,文中推导了在近射程、滚转体制条件下直瞄式火箭弹的捷联惯导基本方程,建立了相应的解算模型.在此基础上,以某型直瞄式反坦克火箭弹为例进行了仿真,验证了所建立的惯导方程及解算模型的正确性.     

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.     

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.     

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.     

Algorithm for Multi-laser-target Tracking Based on Clustering Fusion

Multi-laser-target tracking is an important subject in the field of signal processing of laser warners. A clustering method is applied to the measurement of laser warner, and the space-time fusion for measurements in the same cluster is accomplished. Real-time tracking of multi-laser-target and real-time picking of multi-laser-signal are introduced using data fusion of the measurements. A prototype device of the algorithm is built up. The results of experiments show that the algorithm is very effective.     

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.     

Design and Analysis of Test Schemes of Static Postponing Time on Shrapnels Used to Riot Control

The test scheme of static postponing time given in our actual national military test standard on shrapnels used to control riot is a nine-point test scheme on the combined action of three kinds of temperatures and three kinds of pressures,the consumed ammunitions are more excessive. Statistic analysis and tentative checkout about a lot of test data are done,feasibility gists are put forward for optimizing of the test design scheme. The optimizing design and data analysis of test scheme of the item are done by managing uniformity design theory, two scientific and reasonable six-point test schemes are confirmed. The feasibility and reliability of the optimizing design schemes put forward above are proved ulteriorly by test validating. The gained schemes not only have good design uniformity and little ammunition wastage and meet the test demand, but also have better forecast ability for the result data of other points using the mathematic models from the actual test points.     

Influence of Installing Error on the Surface Shape Precision of the Axial Symmetry Aspheric Workpiece in Lapping

A method to calculate the surface shape error, which is caused by the installing error between the workpiece and the lapping tool in the process of form lapping, is proposed. The mathematical model which the installing translation error influences on the workpiece surface shape error is established. The changing rule of the error is simulated through the calculating example of the paraboloid workpiece. The results indicate that the surface shape error of the workpiece is increasing with the increase of the installing translation error, it is also increasing gradually along the center point of the curve surface to the edge, and the influence is severer to the curve surface with great curvature than that of the small curvature when the translation error is the same.     

Experimental Research on Output Performances of Giant Magnetostrictive Actuator

The paper introduces the performances of magnetostrictive actuators and its applications, discusses the design methods for the structure and internal magnetic circuit of a giant magnetostrictive actuator, and makes tests on the output displacement and force characteristics for an actuator using homemade magnetostrictive material. The experimental result shows that the actuator has satisfactory output precisions and ranges in transient and stable states, and can be used in lowfrequency vibration control system of precise equipment.