Abstract:The essential method of application of weighted least squares support vector machines (WLS-SVM) to time series forecasting is introduced in detail in this paper, and the general framework for one dimensional time series modeling forecasting is proposed. BIC rule is adopted to select the embedded dimension, and a model performance evaluation method based on statistic is presented. The WLS-SVM model and AR model are set up and used to forecast the status of airplane based on the representative parameters, also the comparison result between the two models is given. The result shows that the WLS-SVM has excellent extended capability because the new type of structural risk minimization principle is adopted, and simultaneously it is of high accuracy and has long forecasting intervals.

Abstract:This paper introduces the Concurrent Subsystem Robust Design Optimisation method, and studies the simple application of the method to the design of an aircraft. The Concurrent Subsystem Robust Design Optimisation method and other two different methods are adopted in computation; the robust result indicates that the Concurrent Subsystem Robust Design Optimisation method is better than the other two methods. There are three ameliorations in the new method, the first one is that uncertainty analysis is added under MDO circumstance. Secondly, it is allowed to use disperse variable in the system level. Thirdly, neural network response surface is applied to providing measurable information.

Abstract:The mechanism of non-thermal equilibrium plasma assisted combustion is recommended. In this paper the assisted combustion effect of methane is calculated by using the Gibbs free energy theory. Based on the analysis of the burning temperature and the combustion products after the injection of various quantity particles, the chemical kinetic characteristic of plasma can expedite the process of reaction, increase the burning temperature and reduce the ejection of the pollutant, which verifies that the use of plasma to assist combustion in aero engine combustion chamber is feasible.

Abstract:A digitisation scheme of multi-mode navigation receiver is presented to solve the incompatibility of various navigation mechanism. In the scheme, the multi-mechanism navigation signal is analysed and processed using only one FPGA (Field Prognammable Gate Annay) after AD (Andlog to Digital) sampling of the intermediate frequency signal, at the same time, the size is reduced greatly. This paper mainly analyses the frequency planning, sampling frequency, the analog front-end circuit, gain distribution and the AGC circuit of the intermediate frequency digitised receiver based on Software Defined Radio. The analysed data indicate that the scheme is feasible.

Abstract:In order to solve the problem apt to land in local minimum results for its sensitivity to the initial conditions, in view of character of test-online, this paper proposes a global fuzzy c - means (GFCM) clustering algorithm based on incremental approach to clustering. The converging speed of GFCM is improved by simplifying the algorithm and then the approach of the algorithm is given. The experimental test for unsupervised clustering and fault pattern recognition of the information channels of airborne weapon system is given by using the new GFCM algorithm. The results show that the proposed algorithm is effective in dealing with the aforementioned problem under condition of small data capacity.

Abstract:Embedded software design of SINS / GPS Combination Navigation System is developed, the whole design project of the software is proposed, the detailed design process of the software is given, the start-up program of the system is compiled, and the main program structure of the hold drive mode is devised in this thesis. The blended translation and edition of the assembly language and C language are adopted, which can not only optimize the run speed of the system, but also accelerate the exploration schedule of it.

Abstract:In this paper the model of Cross-locating in the Radar netting under the condition of jam is discussed, and the distributing of the error in Cross-locating is analyzed. Aiming at the problem of the instability in Confusion error, a fusion model is founded to proofread the error based on the theory of data fusion. The model can be used to eliminate the problem of instability in Cross-locating error effectively. The result of simulation shows that this model can expand the detect range and enhance the precision of the Net-radar.

Abstract:This paper makes a study of the problem of guaranteed cost control in chaotic systems, and obtains a necessary and sufficient condition existing in guaranteed cost controllers. The result shows that this condition is equivalent to the feasibility problem of a certain linear matrix-inequality system, and provides a guaranteed cost controller. The design problem of optimal guaranteed cost controller in chaotic systems is formulated as a convex optimization problem on the basis of this, which can be solved by convex optimization techniques. Finally Chen system is taken as an example to demonstrate the effectiveness of this method.

Abstract:In order to realize the ranging of bi-static radar, a method of adjusting the delay of a transmitter triggering pulse is brought forward. By using this method, the mono-static and bi-static signals coincide with each other, thus realizing the bi-static raging, and simultaneously accomplishing the display emendation of bi-static signals. The model of adjusting transmitter triggering pulse is given in this paper, and the simulation result displays the feasibility of this method.

Abstract:A new method of computing RCS of targets is presented, based on combining the Graphical Electromagnetic Computing with model analysis together, to overcome the disadvantage of the traditional method by which not all the edges of the model can be identified accurately. By using this method, the accuracy of RCS is improved.

Abstract:The direct signal leakage of the Continuous Wave (CW) Radar is a key technique problem, which is analysed in this paper. And a mixed analog and digital method of restraining the direct signal leakage is proposed for CW Radars. A scheme of the link of digital clutter filter and receive channel equilibrium filter is also given when the proposed method is implemented. The validity of the proposed method and its implementation has been verified by the results of computer simulation and radar outfield trial.

Abstract:Wavelet theory is a useful tool for processing the non-placement signal, this paper analyzes the feature extraction method of battlefield acoustic signal based on the wavelet packet analysis theory. Features of four types of acoustic signals of the battlefield target are extracted and low-dimension feature vectors are obtained by using this technique. BP neural network classifier is designed for the acoustic target classification. Satisfactory experimental results are obtained with highly classification accuracy.

Abstract:Tactical direction of air attack target is the tactical attack direction. On the basis of analyzing the factors about tactical direction of air attack target, the quantitative rules and synthetic method are given and a judging model of tactical attack direction of air attack is constructed, which supply grounds for quantitative analysis of the air defense deployment.

Abstract:Parallel Test is a main direction for the next generation Automatic Test System. The key factors that influence the parallel test system's resource configuration are analyzed based on the essence conception of Parallel Test. Then the means of resolving the complex problem of the parallel test is given. The signal model of unit under parallel test and the interface model of the test resource are studied. In order to reduce the parallel test system cost and improve the system efficiency, the conception of parallel test optimized task list is put forward. The method of parallel test system's resource configuration is presented based on the conception.

Abstract:This paper firstly introduces the concept of life cycle cost and the meaning of life cycle cost estimation, secondly analyzes the advantage and disadvantage of the conventional estimation method. By introducing the principles and methods of wavelet and wavelet transformation, a wavelet neural network structure applicable to equipment development expense is built. Finally, data simulation combined with airplane Life Cycle Cost (LCC) is done, and the simulation results show that the method mentioned in this paper is feasible and practicable.

Abstract:The superiority of applying TPN with modeling to battlefield damage assessment repair system of communication and navigation equipment is described. And then, the method and step of modeling for its system based on TPN are given. On this basis, a TPN model of battlefield damage assessment repair system of communication and navigation equipment is built. And a case study is used to indicate that research on modeling for its system based on TPN model is efficient and scientific.

Abstract:Linking the practical deployment of the air force with the requirement of informationization of the air-defence weapons, this paper presents the evaluation index set, and builds an evaluation model with power exponent and linear weight. The model reflects the reality of the weapon informationization of the brigade, and the computation result verifies its correctness and feasibility.

Abstract:Several image transforming and coding algorithms in eliminating the redundancy of image are compared. Four images with high redundancies which are referred to as repetition, symmetry, rotation and interpolation are generated by transforming and tiling the original image, then processed by using transforming and coding algorithm. The result shows that at present no algorithm can be used to eliminate the redundancies referred to as repetition, symmetry, rotation and interpolation simultaneously. This paper implies a direction to enhance the performance of image coding.

Abstract:Reducing the Peak to Average power Ratio (PAR) is a key to applying the technology of OFDM efficiently. In this paper, an effective method based on GCS in reducing the PAR of an OFDM signal is presented. Using this improved choice of accompany aggregate coding method, the complexity of the conventional reducing PAR method of OFDM system is reduced effectively. The better statistics of peak power in the improved transmit signal are demonstrated by the simulation results.

Abstract:Pressure-sensitive Paint Measurement (PSP) Technique has been employed in more and more fields for its unique advantages such as large pressure measurement surface, less interference to fluid field and so on. A PSP Measurement System for turbo-machinery has been established on the basis of equipment in existence for the first time in our nation. Calibration for homemade fluorescent PSP has been conducted in an attempt both to validate the PSP Measurement System and to have as more knowledge of homemade PSP as possible, such as its characteristic of fluorescent intensity versus pressure and its period of validity for use. All of the work prepared the ground for the farther research.

Abstract:To deal with the uncertain information in decision maker's mind, linguistic variables are introduced, the linguistic label set for importance comparison is built. The linguistic consistent matrix is defined, and its properties, such as the consistency with human's thinking and center-division transitivity, are studied. By using linguistic aggregation operator, the information of linguistic consistent matrix is aggregated and a result is gained. An example is presented to explain the usage and show the efficiency and correctness of the linguistic consistent matrix in decision- making.

Abstract:Concerning the intuitionist fuzzy logic reasoning, an approximate reasoning method based on the measures of similarity between intuitionist fuzzy sets is proposed, and the related sets of the compositional formulas of operations are derived. An example is used to interpret the new method of approximate reasoning. The method is conceptually clearer and more straightforward, which is a great advantage of it.

Abstract:Poly-N-isopropylacrylamide(PNIPAM) and poly ( N-isopropylacrylamide-co-methacrylic acid ) ( P (NIPAM-co-MAA) ) micro-gels are prepared by using the inverse suspension polymerization method. PNIPAM/CuS and P(NIPAM-co-MAA)/CuS organic-inorganic composite micro-spheres with patterned surface structures are prepared by taking these two kinds of micro-gels as templates. The results show that the surface morphologies of the composite micro-spheres depend not only on the nature of the micro-gel templates, but also on the relative contents of the metal sulfide precipitated in the composites. This method provides a new way to prepare organic-inorganic composite micro-spheres with complex and regular surface structures.