气动目标多频点调制谱融合增强识别方法

doi:10.12305/j.issn.1001-506X.2023.07.14

Abstract

Abstract:

To solve the problem of unstable recognition performance caused by weak energy of aircraft fretting echo in early warning radar detection process, a multi-frequency modulation spectrum fusion and enhanced recognition method combining sparse constrained non-negative matrix factorization (SCNMF) and integrated extreme learning machine (IELM) is proposed.By analyzing the echo frequency domain characteristics of the micro-motion parts, SCNMF is performed on the modulation spectrum of multi-frequency to achieve pixel-level fusion and obtain the enhanced sparse modulation spectrum, which is input into IELM as a sample to achieve pneumatic target classification. Simulation and measured data verify that the proposed method can effectively integrate multi-frequency micro-motion features, and has the advantages of strong anti-noise ability, fewer training samples and robust recognition performance.

Key words: modulation spectrum, pneumatic target, sparse constrained non-negative matrix factorization, integrated extreme learning machine (IELM)

CLC Number:

TN95

Qingyuan ZHAO, Zhiqiang ZHAO, Chunmao YE, Yaobing LU. Multi-frequency modulation spectrum fusion enhanced recognition method for pneumatic targets[J]. Systems Engineering and Electronics, 2023, 45(7): 2043-2050.

Figures/Tables 10

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References 32

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参数	目标
参数	目标1	目标2	目标3
桨叶数	3	4	38
L₁/m	0	0	0.38
L₂/m	5.345	1.8	0.6
w_r/rps	7~8	18~21	55~60

序号	方法	准确率
序号	方法	最小	最大	平均
1	单频点+BP	72.5	79.0	76.6
2	GLRT+BP	75.4	86.7	81.4
3	SCNMF+BP	82.0	90.5	85.4
4	单频点+PCA+SVM^[8]	75.0	80.5	77.7
5	GLRT++PCA+SVM^[8]	76.8	89.1	82.3
6	SCNMF+PCA+SVM^[8]	85.5	93.0	87.9
7	单频点+ELM	70.0	83.5	82.4
8	GLRT+ELM	72.3	90.4	86.4
9	SCNMF+ELM	80.5	96.5	90.6
10	单频点+IELM	81.5.0	84.0	83.1
11	GLRT+IELM	85.9	91.5	87.6
12	SCNMF+IELM	90.5	96.5	93.2

方法	平均准确率
方法6	85.2
方法10	79.3
方法11	80.9
方法12	89.6

[1]	Qingyuan ZHAO, Zhiqiang ZHAO, Chunmao YE, Yaobing LU. Micro-Doppler parameter estimation based on super-resolution modulation spectrum reconstruction [J]. Systems Engineering and Electronics, 2023, 45(2): 407-415.
[2]	HUANG Jing，XIAO Zhi-he，REN Hong-mei. Super-resolution processing of coherent narrowband radar for modulation spectrum [J]. Journal of Systems Engineering and Electronics, 2010, 32(9): 1894-1897.

Multi-frequency modulation spectrum fusion enhanced recognition method for pneumatic targets

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