Research on GNSS-R sea surface target imaging simulation method

doi:10.13474/j.cnki.11-2246.2019.0049

Abstract

Abstract:

Based on scattering theory in high-frequency, this paper presents a new GNSS-SAR imaging model. The model takes GNSS signal as sources, describes the influence of electromagnetic scattering on GNSS-SAR imaging on sea surface, with the combination of physical optic methods and four-path method, which has been used in some traditional composite models on electromagnetic scattering calculation. Besides, the effects of multi-path scattering, shadowing, and diffuse scattering are also considered. According to electromagnetic scattering theory, we have analyzed the disturbance of wind speed on sea surface. In conclusion, in the scenario we simulated in paper, the target can be recognized if wind speed is 9 m/s, but when wind speed comes to 17 m/s, the recognition will fail.

Key words: global navigation satellite system, synthetic aperture radar, electromagnetic scattering coefficient, four-path model

CLC Number:

P229

ZHANG Yuandi, JIAO Ruili, ZHU Yunlong, WU Shiyu. Research on GNSS-R sea surface target imaging simulation method[J]. 测绘通报, 2019, 0(2): 86-90,107.

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