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      Computation Reduction Oriented Circular Scanning SAR Raw Data Simulation on Multi-GPUs

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          Abstract

          As a special working mode, the circular scanning Synthetic Aperture Radar (SAR) is widely used in the earth observation. With the increase of resolution and swath width, the simulation data has a massive increase, which boosts the new requirements of efficiency. Through analyzing the redundancy in the raw data simulation based on Graphics Processing Unit (GPU), a fast simulation method considering reduction of redundant computation is realized by the multi-GPUs and Message Passing Interface (MPI). The results show that the efficiency of 4-GPUs increases 2 times through the redundant reduction, and the hardware cost decreases by 50%, thus the overall speedup achieves 350 times than the traditional CPU simulation.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 August 2016
          : 5
          : 4
          : 434-443
          Affiliations
          [1 ] College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
          [2 ] ②(Beijing Remote Sensing Equipment Research Institute, Beijing 100854, China)
          Article
          151ffe8639d1418bb7b40eb79bc82580
          10.12000/JR15078

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Categories
          Technology (General)
          T1-995

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