The DOA Estimation of the MIMO radar is widely used to determine the position of the objects. Having been considered the multipath communication environment, this paper estimates the DOA information of low elevation targets using beam space MUSIC algorithm based on the model of uniform linear array of MIMO radar. Simulations have shown that the algorithm is effective in the multipath spread environment, and the resolution of the DOA estimation of angular is about 0.5°
A series of electrical parameters is used to describe the performance of antenna. Antenna pattern which is the main electrical parameter of antenna shows an aerial image of radiation field. The antenna pattern simulation system which can make antenna users install the antenna visual is developed in Visual Studio 2005 with the application of MFC programming technology. Test results show that the antenna pattern simulation system is effective.
A model of pollutant diffusion in the liquid is modified and validated based on experiments using image processing technology in the paper. By using the knowledge of field theory, the variation rule of diffusion and gray parameters was analyzed after the instantaneous images which had been pretreated. The pollutant diffusion model was validated in the research. The experimental results have shown that it is effective to investigate liquid pollutant concentration diffusion using digital image processing technology.
With the rapid development of modern electromagnetics, a lot of electromagnetic field numerical methods are maturing. 3D electromagnetic simulation software HFSS has two solutions including incentive solving and eigenmode solving. When solving the calculation of the structure of eigenmodes or resonant type can use eigenmode solver. Using matlab generate HFSS scripting language-based program to set eigenmode solution is a very convenient and very innovative approach. The program on a circular cavity modeling and eigenmode solution set simulation results meet the design requirements.
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