端射阵机载雷达STAP单脉冲测角方法

doi:10.3969/j.issn.1001-506X.2020.02.10

Abstract

Abstract:

End-fire array radar is an important trend in the development of new system radars. Because of its characteristics of low profile and directional radiation, it is especially suitable for blind compensation of the airborne radar. However, due to the particularity of the antenna pattern, the beamwidth is much wider than that of the side-fire array with the same antenna size, which will inevitably lead to the performance degradation of the traditional adaptive monopulse angle estimation method. An adaptive monopulse angle estimation method based on three-dimensional space-time joint constraints is proposed. This method extends the traditional adaptive monopulse angle estimation problem to elevation-azimuth-Doppler three-dimensional space, overcomes the problem caused by wide beam by using the three-dimensional clutter characteristics and can estimate the azimuth and pitch angle of the target simultaneously, which shows superior angle estimation performance. Computer simulation results verify the effectiveness of the proposed method.

Key words: end-fire array, monopulse angle estimation, beamwidth, three-dimensional clutter spectrum, space-time joint constraints

CLC Number:

TN957

Yongwei LI, Wenchong XIE. Monopulse angle estimation method for end-fire arrayairborne radar based on STAP[J]. Systems Engineering and Electronics, 2020, 42(2): 322-330.

Figures/Tables 15

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仿真参数	数值
K	16
d_x/m	0.115
d_y/m	0.058
λ/m	0.23
V/(m/s)	140
f_r/Hz	2 435
H/km	8
R_max/km	368
P_t/kW	200

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Monopulse angle estimation method for end-fire arrayairborne radar based on STAP

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