Wind Direction Retrieved Based on Energy Spectrum from X-Band Radar Image Sequences
In this paper, a new algorithm is proposed to retrieve wind direction from marine X-band radar image-sequences. This method is based on piecewise fitting technique which can reduce the effect of radar radial attenuation through correcting radar image-sequences. Wind direction is found
using energy spectrum of wind-induced streaks, which is obtained through establishing energy spectrum scale separation filter and the characteristics of wind streaks, two dimensions FFT is used to obtain the energy spectrum of radar images. Compared to local gradient method (LGM), this method
doesn’t need to find the right image resolution for retrieving. The comparison of the wind directions measured by in-situ vane and retrieved from marine X-band radar image sequences have a correlation coefficient of 0.99, with a bias of −0.64° and a standard deviation
of 8.29, which indicate that the proposed method is reasonable.
Keywords: Energy Spectrum; Marine X-Band Radar; Wind Direction
Document Type: Research Article
Affiliations: College of Automation, Harbin Engineering University, Harbin 150001, China
Publication date: 01 November 2016
- Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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