Applied Mechanics and Materials Vols. 220-223

Abstract: The development and application of high-resolution remote sensing was reviewed, the key problems which are confronted now were described, the main disparities between the research level home and abroad was analyzed. In the end, the prospect to the technique of improving image quality in high-resolution remote sensing satellite is given. Depending on self-operation of satellite system, accomplish the real-time image processing will be the trend of HR remote sensing in the future.

Abstract: Nowadays, more and more companies are going to adapt themselves to restriction on the use of certain hazardous substances (RoHS) compliance. There are many RoHS testing equipments, so there are many RoHS Data formats. It is great inconvenient for the enterprise information management. This research puts forward to OCR technology as the foundation, using OPC technology and FTP technology is suitable for the construction of the RoHS testing data integration system framework which solves the RoHS testing field to the problem of data integration.

Abstract: Aiming at the importance of sampling in CCD photoelectric imaging system, the content is studied by us in detail. Firstly, its basic principle is analyzed, and the simple physics explanation and formula deduction are given, and the spectrum expression is obtained. Secondly, the cause of lack sampling is analysed. Finally, the results of experiment verify the correctness of theory analysis.

Abstract: Photovoltaic Array is nonlinear,and the power generated by it is influenced by sun light,temperature,load and so on In order to improve the system efficiency, firstly, analyzed the physical and mathematic model of photovoltaic array, through the MATLAB Simulink application software simulation tools, set up a computer simulation model of photovoltaic modules.Secondly,this paper gives the improved Perturbation and Observation Method and the Boost circuit used in the controller.after the analysis of some common maximum power point tracking algorithms and DC-DC circuits. Experiments shows that the controller method can rapidly to track the maximum power point,and increase the cell efficiency.

Abstract: In order to solve problem of high time complexity of support vector data description (SVDD) in training process, a low complexity SVDD algorithm is proposed by introducing statistical information grid (STING).The algorithm applies STING division to sample set space using support vector distribution characteristics and kernel distances between samples and sphere’s centre. Based on position information of sample points, it rejects non-support vectors and obtained simplified sample set. The results show that proposed method can reduce training scale and time without decreasing classification accuracy.

Abstract: In this paper, a novel approach to ranking fuzzy numbers based on the mean and the fuzzy degree of fuzzy number is proposed. In the approach, a new ranking index that is comprehensive consideration of the mean and the fuzzy degree of fuzzy number is constructed, and then the properties of the ranking index are given. Moreover, to compare the proposed approach with the existing approaches, numerical examples are given. The comparative results illustrate that the approach proposed in this paper is better and has simpler calculations.

Abstract: A new parameter estimation method is introduced for dual-rate Wiener systems. The method uses the finite input response model and a stochastic gradient algorithm to estimate the parameters of the finite input response model. The origin parameters can be computed by the estimated parameters. Simulation studies of dual-rate Wiener systems identification are included.

Abstract: A modified Chen-Qi-like chaotic system is presented. Some basic dynamical characteristics of this system are studied by calculating the Lyapunov exponent and phase figure. Based on the Lyapunov stability theorem, adaptive control scheme and parameters update law are presented for the anti-synchronization of new chaotic systems with fully unknown parameters. Finally, the numerical simulation verify that the control law and parameter changing are correct.

Abstract: Linear sweep signal is one of the most common signals in Vibroseis. The rationality of designing a sweeping signal decides the detection effect. This paper started from the characteristics of harmonic interference. It has researched distribution of harmonic interference and looked for a good sweeping bandwidth in order to suppressing harmonic interference.

Abstract: A new equalization technology study with adaptive affine projection algorithm, aiming at the inter symbol interferences in the UWB channels was presented specially for time-hopping UWB (TH-UWB) systems. The computational complexity and convergence rate of the APA-AG algorithm was compared with the traditional algorithms. The simulation results show that this method improves the convergence rate and has a good stability. And the equalizer with the affine projection algorithm using adaptive gain is better than the RLS equalizer and the LMS equalizer.