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The back projection (BP) algorithm is an accurate time-domain imaging method for synthetic aperture radar. However, the influences of wind field and turbulence on the platform make the antenna phase centers (APCs) greatly deviate from the designed linear trajectory and degrade the BP performance. Although the inertial measurement unit can be used to measure the trajectory, the measurement error still...
Back projection (BP) algorithm has the ability of accurate imaging for synthetic aperture radar (SAR). However, the drawback of low computational efficiency limits the wide application of BP. In this paper, three different parallel schemes based on GPU for BP are presented. According to the features of serial structure of BP, the first two schemes are parallelized through mapping the pulse repetition...
An improved AC_BMH (Aho-Corasick_Boyer-Moore-Horspool) algorithm was proposed in this paper, which combines advantages of both double-character skip and QS (Quick Search) algorithm, and increases the jumping distance of pattern string when pattern strings matching fails, at the same time, decreases the amount of memory usage by employing compact storage mechanism. Experiment results show that the...
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