Improvement and implementation of Forman phase correction algorithm

doi:10.6046/gtzyyg.2013.03.17

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Abstract

Problems such as complex algorithm, heavy computation and low efficiency occur when Forman method is directly used in the implementation of HJ-1A real-time hyperspectral data processing system. In this paper, an improved method is proposed. With this method, phase calculation is simplified and, at the same time, the calculation process is optimized by using the property of Fourier transform of the complex sequence and the conjugate symmetry of Fourier transform of real sequence. On the basis of analyzing the amount of floating point operations of the algorithm key step before and after the improvement, the improved method is eventually realized based on the graphic processing unit (GPU) as the experimental subject to HJ-1A hyperspectral data. The results show that the operating speed of the improved Forman algorithm is increased by 11.86% in the case of the same calculation accuracy. Thus, the improved Forman algorithm can provide an effective way to realize the HJ-1A real-time hyperspectral data processing system.

Keywords remote sensing geological survey standard system

TP 751

Issue Date: 03 July 2013

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	YANG Qinghua

Cite this article:

YANG Qinghua. Improvement and implementation of Forman phase correction algorithm[J]. REMOTE SENSING FOR LAND & RESOURCES, 2013, 25(3): 97-101.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2013.03.17 OR https://www.gtzyyg.com/EN/Y2013/V25/I3/97

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