大入射余角下海杂波仿真及其时空相关性分析

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Simulation of the sea clutter and an analysis of temporal and spatial correlation at a high grazing angle

QIN Guo-dong;CHEN Bo-xiao;CHEN Duo-fang

(Key Lab. of Radar Signal Processing, Xidian Univ., Xi’an 710071， China)

Received:2007-08-16 Revised:1900-01-01 Online:2008-08-20 Published:2008-08-20
Contact: QIN Guo-dong E-mail:gdqin@mail.xidian.edu.cn

Abstract

Abstract:

The high-resolution sea clutter is produced at high grazing angles by using the Neumann-Pierson sea surface model. The amplitude distribution and average Doppler frequency of the sea clutter produced are analyzed. The temporal and spatial auto-correlation functions are formulated, and then the correlation is analyzed. Some results are obtained with the beam in the Ku-band illuminating the sea surface in some sea state. The amplitude of the sea clutter obeys the χ₂ distribution; the spectrum is widened at the shifted central frequency of 30Hz; the sea clutter has strong correlation in time and space, and the correlation time is about 20ms.

Key words: high grazing angle, sea clutter simulation, modeling, temporal and spatial correlation

CLC Number:

TN957.51

QIN Guo-dong;CHEN Bo-xiao;CHEN Duo-fang. Simulation of the sea clutter and an analysis of temporal and spatial correlation at a high grazing angle
[J].J4, 2008, 35(4): 600-604.

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Simulation of the sea clutter and an analysis of temporal and spatial correlation at a high grazing angle

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