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In order to solve the practical application problems of high output energy and difficult cancellation of nonlinear function in the backstepping algorithm for ship course-keeping control, a closed loop gain shaping algorithm is employed to design the linear part of nonlinear backstepping controller firstly, then the backstepping algorithm is linear-reduced by ignoring the nonlinear part of the controller...
Due to the defects of modern radar simulator such as the outmoded single function operation interface and the progress is far behind the real equipment, we developing a novel radar simulator. The design of simulator is modularized. On the basis of the normal radar simulator we added some new practical function. With the aid of WPF and C# we finished the design and realization of the simulator. Our...
The scene simulation of ocean waves is a hot topic in computer graphics. Based on whether the liquid viscosity is considered, the simulation can be separated into two types, the scene simulation of viscid ocean waves and of the inviscid. For the scene simulation of viscid ocean waves, its theoretical principle is the governing equations of the viscid liquid, and it fits rendering middle and small...
The realistic rendering of fire scene is one of the most challenging tasks in computer graphics. Based on GPU, the rendering of fire and smoke is studied by using particle system. The fire is treated as three parts: fireball, flame and ember, and every part is simulated by using the respective particle system. The light reflection and scattering are realized to improve the realism of smoke simulation...
Natural phenomenon simulation such as: ocean sea, spray, snow, rain etc. is a challenging topic in field of computer graphics. How to generate spray on sea? How to consider both wave spectrum and sea scale while simulating wave in visual system? How to implement the algorithm of wave generation in real-time? Based on analyzing the relationship between sea scale and wave spectrum, the wave model of...
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