基于散射拓扑增强的双流SAR飞机检测网络

doi:10.12305/j.issn.1001-506X.2026.06.07

Abstract

Abstract:

To address false alarms caused by the discrete characteristics of aircraft target components in synthetic aperture radar （SAR） images and feature instability due to imaging angle differences, this paper proposes a dual-stream SAR aircraft target detection network based on scattering topology enhancement. First, a hierarchical topological feature extraction module （HTFEM） based on graph convolution is introduced to achieve spatial modeling of target scattering points, enhancing their structural correlation. On this basis, a refined hierarchical feature adjustment module （RHFAM） is incorporated, utilizing multi-level topological information to adjust and enhance visual features at different receptive fields, thereby improving the model’s perception of target geometric representation. Finally, experiments are conducted on the SAR Aircraft Detection Dataset （SADD）, with a 2.8% mAP gain over the baseline, achieving an overall mAP of 67.0%. The proposed approach outperforms other similar methods in various complex scenarios, exhibiting strong robustness and generalization capability.

Key words: aircraft target, target detection, scattering topology, synthetic aperture radar （SAR）

CLC Number:

TP 753

Weishan ZHAO, Siyang YOU, Lijia HUANG, Guangyao ZHOU. Dual-stream SAR aircraft detection network enhanced by scattering topology[J]. Systems Engineering and Electronics, 2026, 48(6): 1848-1858.

Figures/Tables 12

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References 33

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参数名称	设定值	说明
角点响应阈值	0.2	过滤低质量角点
角点最大数量	100	限制角点数量
最小欧几里德距离	10	限制角点间距离

方法	AP@[IoU=0.5:0.95]			mAP
方法	小型目标	中型目标	大型目标	mAP
YoloX	0.487	0.605	0.420	0.517
Yolov5	0.605	0.708	0.574	0.631
Yolov7	0.618	0.706	0.532	0.638
RetinaNet	0.614	0.771	0.553	0.647
Faster-RCNN	0.628	0.769	0.564	0.663
Grid-RCNN	0.511	0.655	0.476	0.548
DETR	0.605	0.735	0.572	0.520
Mask-RCNN	0.628	0.782	0.546	0.666
RTMDet（基线）	0.615	0.732	0.570	0.642
所提方法	0.639	0.788	0.575	0.670

实验	HTFEM	RHFAM	AP^s	AP^m	AP^l	mAP
1	−	−	0.615	0.732	0.570	0.642
2	√	−	0.622	0.748	0.569	0.654
3	−	√	0.629	0.772	0.573	0.660
4	√	√	0.639	0.788	0.575	0.670

卫星	中心坐标	模式	分辨率	波段	极化
TerraSAR-X	122.147/29.369	Spotlight	0.903545	X	HH

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Dual-stream SAR aircraft detection network enhanced by scattering topology

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