UHF波段小擦地角海杂波幅度均值修正模型

doi:10.3969/j.issn.1001-506X.2020.05.09

Abstract

Abstract:

As an important characteristic of sea clutter, the reflectivity can support the radar system design. Thus, some empirical models are proposed around the world. However, the applicability of the models is not strong due to the complexity of scattering mechanism at the low grazing angle and the difference of test conditions. An applicability analysis is done by using the ultra high frequency (UHF) band horizontal polarized sea clutter data of the Yellow Sea at low grazing angle. Aiming at the poor fitting of the existing models, the reasons are preliminarily analyzed and a modified technology service corporation (TSC) model is presented. Through improving the grazing angle and wind direction factors in the TSC model, the trend of reflectivity varing with parameters is adjusted. Compared with the measured data, it is found that the proposed model can provide better prediction of reflectivity at the test sea area.

Key words: sea clutter, low grazing angle, ultra high frequency (UHF) band

CLC Number:

TN957.51

Xin LI, Xiaoyun XIA, Yushi ZHANG, Penglang SHUI, Jinpeng ZHANG. Modified reflectivity model of UHF-band sea clutter at low grazing angle[J]. Systems Engineering and Electronics, 2020, 42(5): 1035-1040.

Figures/Tables 9

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References 26

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参数	值
频率/MHz	456
高度/m	430
极化	HH
下俯角/(°)	4
分辨率/m	60
脉冲重频/kHz	1
脉宽/μs	10
发射功率/kW	3.2
天线增益/dB	23
校准精度/dB	2

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Modified reflectivity model of UHF-band sea clutter at low grazing angle

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