机载宽带雷达的数据重组空时自适应处理方法

doi:10.12305/j.issn.1001-506X.2023.06.11

Abstract

Abstract:

Airborne broadband radar has higher range resolution, which is conducive to target imaging or recognition. However, higher resolution also makes the range migration between the array elements and/or pulses of the target signal and clutter signal more obvious. If the narrowband space-time adaptive processing is performed, the output signal-to-noise ratio is seriously reduced. To solve this problem, an data reorganization space-time adaptive processing method for airborne broadband radar is proposed. Firstly, the echo data is reorganized according to the velocity-angle to be detected, so that the target signal envelopes of different pulses and different array elements are aligned. Then, the range-dimension reorganization space-time processing is performed, and the output signal is used as the test statistics data. Finally, the target angle and velocity search method are given. This method reduces the target energy loss of coherent accumulation. The performance of target detection and clutter suppression is improved. Simulation results verify the effectiveness of the proposed method.

Key words: airborne broadband radar, space-time adaptive processing, range migration, data reorganization

CLC Number:

TN958

Jianting FENG, Tong WANG, Jun DING, Tong LU. Data reorganization space-time adaptive processing method for airborne broadband radar[J]. Systems Engineering and Electronics, 2023, 45(6): 1675-1683.

Figures/Tables 10

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References 20

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参数	取值
带宽/MHz	1 000
平台高度/m	8 000
平台飞行速度/(m·s^-1)	400
脉冲重复频率/Hz	8 000
载波波长/m	0.3
阵元间隔/m	0.1

参数	取值
带宽/MHz	100
平台高度/m	8 000
脉冲重复频率/Hz	8 000
阵元数/个	32
阵元间隔/m	0.3
脉冲数/个	32
载波波长/m	0.6

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Data reorganization space-time adaptive processing method for airborne broadband radar

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