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The reliability is the important performance of high power semiconductor laser. Thermally accelerated ageing test is an important technology of lifetime evaluation and reliability analysis. In this study, three groups of thermally accelerated ageing tests of conduction-cooled-packaged 60W 808nm high power diode laser arrays packaged by Indium solder at constant current have been carried out. Analysis...
In this paper, an improved recursive least square (RLS) algorithm was proposed to estimate time-varying AR parameters in the presence of noise. Interharmonics signal can be modeled as a nonstationary auto-regressive (AR) model, the spectral estimation of interharmonics signal can be given by the estimated time-varying AR parameters. AR parametric spectral estimation methods have better frequency resolution...
We present a multi-feature based object extraction algorithm in this paper. Cutting in from the angle of multi-feature, this algorithm combines the high-efficient and good performance Graph Cut framework. We add foreground shape information and motion estimation as a compensation of the instability of using single color information.
Vehicle tracking is an important part in intelligent transportation surveillance. But now vehicle tracking faces with the problems such as scale change, the interference of similar color, low resolution video data and so on. In this paper an improved Markov chain Monte Carlo(MCMC) named optical flow MCMC(OF-MCMC) sampling tracking algorithm is proposed for vehicle tracking. First, we use the optical...
We consider the problem of controlling coupled identical, planar particles in the polar coordinate to achieve various collective motions. We first introduce a model that allows amplitude and phase coordination by decomposing particles' positions into the amplitude and phase states. Then we present two control algorithms based on this model. The convergence analysis shows that under different coordination...
In this paper, we propose a linear finite difference scheme for the initial-boundary problem of Rosenau-Burgers equation. We not only discuss solvability, stability and convergence of the scheme in detail, but also prove that the numerical solution of the scheme converges to the exact solution of the original problem in the sense of ????????-norm. At last, a numerical example, which compares results...
There are many algorithms to simplify meshes. But, most of them are to realize real-time rendering circumstance or models in virtual reality. This paper introduces a novel scheme to simplify meshes from a different view point--visual resolution. This paper uses visual recognizing object principle to simplify meshes. The model or scheme gives a reasonable standard which decides what extent the 3D model...
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