基于MIAA的稀疏轨迹扫描毫米波三维成像算法

doi:10.12305/j.issn.1001-506X.2025.11.10

Abstract

Abstract:

The use of sparse trajectory scanning can significantly reduce the scanning time of synthetic aperture radar millimeter-wave three-dimensional imaging, yet it can cause the absence of a large amount of data for the entire row or column, resulting in degradation of imaging quality. To address this problem, a millimeter wave sparse trajectory scanning three-dimensional imaging algorithm based on missing-data iterative adaptive approach （MIAA） is proposed. Firstly, the sparse characteristic of radar echo signal in a single scanning direction after azimuth compression is analyzed. Subsequently, the azimuth compression process is characterised as a sparse basis matrix embedded in MIAA algorithm, which recovers the missing-data matrix row-by-row or column-by-column. Finally, the complete data is used to reconstruct three-dimensional image. The experimental results show that up to 30% of fully sampled data obtained from sparse trajectory scanning, the proposed algorithm achieves better imaging results than existing algorithms.

Key words: millimeter-wave radar, three-dimensional imaging, sparse imaging, iterative adaptive approach

CLC Number:

TN 957

Ruixiang FANG, Xiaojin SHI, Yunhua ZHANG. MIAA based three-dimensional millimeter-wave imaging algorithm with sparse trajectory scanning[J]. Systems Engineering and Electronics, 2025, 47(11): 3612-3625.

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参数名称	数值
载波频率/GHz	77
信号带宽/GHz	4
水平向合成孔径/mm	200
垂直向合成孔径/mm	200
水平向采样间隔/mm	2
垂直向采样间隔/mm	2

成像方法	PSLR	ISLR
全采样-RMA	−9.950	−17.188
稀疏采样-RMA	−5.071	1.369
FT-MIAA	−5.090	1.373
FSR-MIAA	−9.187	−6.901

VSSR	算法	PSNR/dB	SSIM
50%	RMA	17.128	0.532
	CS-FISTA	20.830	0.654
	FT-MIAA	28.287	0.727
	FSR-MIAA	31.493	0.847
30%	RMA	15.180	0.474
	CS-FISTA	20.506	0.589
	FT-MIAA	23.741	0.598
	FSR-MIAA	27.695	0.796

目标	算法	PSNR/dB	SSIM
扳手	RMA	22.861	0.564
	CS-FISTA	27.149	0.721
	FT-MIAA	25.375	0.432
	FSR-MIAA	34.776	0.844
匕首	RMA	23.386	0.521
	CS-FISTA	27.547	0.751
	FT-MIAA	24.204	0.406
	FSR-MIAA	35.646	0.834

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MIAA based three-dimensional millimeter-wave imaging algorithm with sparse trajectory scanning

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