Abstract:The fusion and effectiveness calculation of multi-radar power envelopes in three-dimensional electromagnetic situation is an important subject, which is of vital for commanders to understand the performance boundary of equipment. At present, the calculation methods of multi-radar overlay effect mainly include the methods of transparenc y superposition,osurface extraction, voxel coloring, and so on. These methods mainly exist problems such as simple visual degree difference of superposition, complex fusion boundary not fine, resolution difference and too dependence on hardware, which are still quite different from practical application. To solve the above problems, this paper proposes a novel multi-radar power envelope fusion technology. This technology first non-coherent probability superposition into envelope fusion, reducing the dependence on phase and other information when the envelope is presented. Then, by using the gradient diffusion method, the smooth transition edge retention are realized. Finally, the strategy of octree GPU acceleration is adopted to improve the efficiency of algorithm calculation and visualization. Simulation experiments show that the algorithm has increased frame rate to more than 30fps in the situation of 10 radars, which is flat with the situation of 2-3 radars in the methods of 1 and 2 , and the capability has been improved by 3-5 times. Algorithm practice shows that the smooth envelope fusion, clear boundary interface reduced dependence on radar parameters under high refresh rate greatly improve the presentation of the fused envelope and the user"s visual sense.
