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HIGH-PERFORMANCE ALGORITHM FOR SIMULATION OF THE EARTH REMOTE SENSING RADAR SYSTEM ON A GRAPHICS PROCESSOR WITH PARALLEL ARCHITECTURE

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Methods of calculation acceleration in modeling radar systems with synthetic aperture on the GPU parallel architecture are considered. The simulation is based on a point model of the underlying surface. The modeling algorithm assumes preliminary calculation of the reflected signals with the increased sampling rate and subsequent approximation of obtained results to derive a hologram of the district model. It is shown that the time limit for hologram synthesis is defined as the product of number of processes in the block and the number of blocks in the lattice. The combination of these parameters is to be selected based on the architecture of the graphics accelerator. Results of simulations carried out on NVIDIA Tesla K20 GPU using CUDA are presented. Efficiency of the graphic accelerator application for modeling the RLS RSA is confirmed. Thus, in the case of a hologram for a 100x100 points model, the time gain is more than twenty times compared to calculations performed with a general-purpose processor.

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