Abstract:The chemical non-equilibrium viscous shock layer flows over a teflon ablative wall are calculated numerically. The coupled solutions of the chemical non-equilibrium viscous shock layer flows and the teflon ablative procedures are obtained through space-marching and global iterations. The overall teflon-air chemical system used consists of 19 species and 29 reactions. The effects of the equilibrium catalytic and the noncatalytic wall conditions on the ablative flows are discussed.

Abstract:Various methods for solving Boltzmann equation are discussed in this paper. After analyzing the advantagesit and shortcomings of each method, it is shown that at present the direct simulation Monte-Carlo method is the best approach to solving rarefied gas dynamic problems.

Abstract:The compression and torsion behavior for the three-dimensional braided C/E 4-D and 5-D circular tubes and the axial compression bearing-capacity for the Analogue Structure of Rocket Link-stage were investigated by experimental method in this paper. The experimental results show that the compression behavior for 5-D material is superior to 4-D material but the shear modulus for 5-D specimens are nearly the same with 4-D ones. The 3-cell model and FGM model are applied to predict the relative properties and compression strength of the tubes. The comparisons between the theoretical results and the experimental ones indicate that the predict results by 3-cell model are fairly coincident with the experiments, and the predict values by FGM model are lower. The results in this paper are a good basis for the designer of the braid sructures.

Abstract:in this paper, the maximum range evaluation method for solid missiles based on solid rocket motor performance dispersion analysis is presented. The method is the combination of system identification, performance dispersion analysis for solid rocket motor and range statistic analysis, which is practical and significant for solid missiles flight test qualification.

Abstract:The acquisition of missile system MOE (measure of effectiveness) depends on its corresponding model/simulation supporting system. The simulation based missile combat effectiveness evaluation system has complex structure. Architecture theory is a useful technique to deal with the system structural complexity problem. This paper proposes an architecture for missile effectiveness evaluation system based on software architecture theory.

Abstract:This paper deals with the four critical areas in the evaluation of the missile combat effectiveness based on engagement simulation. A common procedure for this method is presented, which can be used for the application of engagement simulation to the evaluation of the combat effectiveness of all kinds of missile systems.

Abstract:This paper presents an object-oriented simulation model for TBM engagement in electrical combat, proposes the structure of this model with the characteristics of simulation on TBM engagement, and discusses the corresponding simulation algorithm.

Abstract:The Anti-Tactical Ballistic Missile (ATBM) plays a more and more important role in the air defense system, and the intercepting decision is a main step in the intercepting process. In this paper, considering the case of large numbers of offensive objects and the constraint of the interceptive ability of the ATBM, the authors provide a general optimized decision model, using 0-1 integral schedule method, to determine the best intercepting plan.

Abstract:This paper studies the detection characteristics of radar net in“Patriot”missile system. After discussing the detection principle of the radar net and its stationing mode (balanced and weighed), the authors propose the distributed target detection model of radar net in“Patriot”missile system.

Abstract:Object-oriented Simulation (OOS) is an important developing trend in the current simulation community. Owing to the macro-structural, hierarchical and modular feature of its modeling method, OOS can improve the encapsulation, flexibility, reusability, extensibility and maintainability of simulation models. It has been put into use in many domains. The authors divide current OOS schools into three categories: OODB based, DEVS based and Actor based, introduce their main thoughts and relative simulation modeling method respectively.

Abstract:This paper proposes the basic concepts and key techniques of Collaborative Simulation in the light of the development and requirement of computer and simulation techniques. It includes modeling methodology, the simulation algorithm, simulation database, and so on. Finally, it proposes a general architecture and implementation for collaborative simulation environment.

Abstract:This paper presents in detail the design and aplication of SLAM, including the implementation of graphicalmodeling environment, the process interaction network simulation strategy and the design of in the simulator. Finally the authors propose the idea of embedding SLAM into a collaborated modeling/simulation environment to do hybrid heterogeneous modeling.

Abstract:To meet the specific demand of missile system engagement simulation, this article proposes a presentation model based, hierarchical presentation supporting system design alternative, after the investigation of several key design problems in distributed presentation environment.

Abstract:In this paper, we discuss the method for simulation model base management. To meet the practical demand for simulation model base management, we propose a way of model base management, which is based on the relation algebraic system entity structure (RASES) formalism and relational database. Furthermore, system design and the formal description of model base management algorithm are presented.

Abstract:Virtual prototyping is a new kind of technology in products design, development, and assessment, which is based on lntegrated Products and Process Development. In this paper, the concept of virtual prototyping in weapon system is introduced, and the relationship between virtual prototyping and weapon equipment evaluation. Emphases are put on the main research contents and several critical techniques used in virtual prototyping environment. Finally, the perspective of virtual prototyping is given.

Abstract:Summing up four ways to enhance the remote sensing computer classification precision, we put forward a remote sensing classification and smoothing integrated technique based on 3-D Hopfield network theory. The experiment results show that this method can improve the precision of classification saliently.

Abstract:Ship targets are generally present in SAR ocean imagery as bright points. In this paper, we introduce the principle of imaging of ship targets first. Then we describe three methods of detecting ship targets from satellite SAR ocean imagery——running window filters method, adaptive limiting method and probability density function method. We have tested the methods by using the real SAR ocean imagery. The result of testing show that adaptive limiting method and probability density function method are good.

Abstract:When binary phase-coded continuous waveforms are to be detected under carrier Doppler, we may employ the method in which the signal is successively IF integrated, envelop detected and video integrated. This method is analyzed in detail and the criterion to choose the optimum IF integration time length is proposed in this paper.

Abstract:In the distributed computing environment, the Object Transaction Service (OTS) is useful to be really effective for devoloping the distributed system. The implementation design of the OTS is critical for the service to reduce network traffic jam. This paper focuses on a new implementation design on top of the object-oriented pass-by-value semantics which can deal with the problem so as to reduce network traffic jam and be applied to enterprise applications.

Abstract:In this paper, we introduce a method to emulate the execution of MPP parallel assemble code which is generated by MPP FORTRAN compiler. Such an emulator can help compiler workers test the compiler's correctness and completeness in early time when runtime environment is not provided during huge engineering. We use shared process group on SGI workstation to emulate MPP environment and remote addressing. It's helpful to correct and evaluate the MPP FORTRAN compiler.

Abstract:A classification of Individual-Soldier System battlefield information and a structure of its informationbase system is discussed in this paper at fitst, and then the author analyses the functions, the design principles and the information processing procedures of individual-Soldier battlefield information-base system.

Abstract:This article begins with an analysis of function, functional specification of Individual-Soldier Computer System and the types, performance, scales of it's external exchanging informance. Then the author gives an architecture of Individual-Soldier Computer System by using layered control fault-tolerant multiprocessor which is interconnected through two-level bus. Besides an explanation of the principle of the architecture is given by the author in hardware and software.

Abstract:We have known from the past research based on the LMS algorithm that normazied LMS (NLMS) algorithm enlarges the dynamic range of input, but it is highly sensitive to the noise disturbance. Variable step-size LMS algorithm (VSSLMS) which uses auto-correlation of errors can provide fast convergence, eliminate the influence of independent noise, thus give good performance in non-stationary environment. But it can not perform well with input which has large dynamic range. This paper combinates their advantages, and the new algorithm can perform well both in the environment of low SNR and the environment with large dynamic range of input.

Abstract:During the last twenty years, the theory and application of built-in test (BIT) have made prominent progress. The BIT technology has been the effective method of improving product's testability and diagnosis ability. The paper summarizes the trait of BIT technology, analyzes its developing trends all over the world, and generalizes the intelligence of BIT during its phrases of system design, information process and synthetic decision, then synthetically analyzes the application to BIT of expert system, neural network, fuzzy theoetic, information fusion and other intelligent theories and builds up the theory frame of intelligent BIT.

Abstract:Increasing speed makes aerodynamic drag of train increase obviously. To decrease aerodynamic drag, it is important to improve aerodynamic contour of train. Experiment results show that a little change of partial contour of train can greatly decrease aerodymic drag. This is an effective way to decrease aerodynamic drag of increasing speed train.

Abstract:The V belt wheels of noise experimental table of main carriage reduction gear must suit drive ratio, be lightest in weight and least in moment of inertia. Therefore we make use of the multitarget optimization to design the V belt wheels. The better result in the use of engineering reality is obtained.

Abstract:In this paper we discuss an expression of conditional random variables at first, give their conditional distributions, and apply these to conditional data fusion.

Abstract:With reference [4] relating to the queuing model of M/M/1 in a random environment, this paper poses and deals with the queuing Model of M/M^Y/1 in a random environment. ln statistical equilibrium, the author obtains the equilibrium distribution of queue length and that of waiting queue length, the average of queue length and that of waiting queue length as well as the equilibrium distribution of waiting time and that of staying time, the average of waiting time and that of staying time.

Abstract:With serial investment models soluted[1-2], the essay deals with their applied form-the continuous form, and gives its explicit optimal stopping rule.

Abstract:This paper discusses the invertibility of Single-input single-output linear timevarying systems. A necessary and sufficient condition for invertibility is derived. A new algorithm for constructing the reduced inverse systems is presented. This algorithm is considerably more efficient and simpler than prerious methods. Finally, an example is given to illustrate the effectiveness of the proposed algorithm.