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The Airplane 3D geometric model is established with unstructured mesh dividing. The numerical simulation of the airplane outflow field is carried out based on the commercial CFD software, the temperature distribution data of aircraft surface is obtained, the radiation process of the tail nozzle and plume radiation is modeled and calculated. The calculation model of infrared radiation characteristic of airframe is established based on Reverse Monte Carlo method, the infrared irradiance of plume is calculated based on radiative transfer equation, The infrared radiation characteristics of the aircraft is obtained, the infrared image of airplane is obtained by method of gray level transformation.

In this paper, the infrared small target detection in video sequence is investigated. A collaborative structured sparse coding model which incorporates the L 1,2 and L 2,1 regularization terms is proposed to detect the infrared small target in video sequence. Further, online dictionary learning is embedded into the model and temporal information is incorporated to eliminate the clutters and noises. Finally, four simulation datasets are constructed to test the proposed method and the experimental validation shows promising results.

Orbit maintenance problems are solved by the synthesis of the traditional penalty function method and evolution algorithms (EAs). A general method is presented for the n-time impulse problem of orbit maintenance. The algorithm is proved to be effective according to a simulation example which adjusts the semi-major axis with 3,4,5 impulse times.