基于注意力机制特征融合网络的SAR图像飞机目标快速检测
Attention Feature Fusion Network for Rapid Aircraft Detection in SAR Images

赵琰赵凌君 ^* 匡纲要

文摘	针对合成孔径雷达(Synthetic Aperture Radar,SAR)图像中飞机目标散射点离散化程度高,周围背景干扰复杂,现有算法对飞机浅层语义特征表征能力弱等问题,本文提出了基于注意力特征融合网络(Attention Feature Fusion Network,AFFN)的SAR图像飞机目标检测算法.通过引入瓶颈注意力模块(Bottleneck Attention Module,BAM),本文在AFFN中构建了包含注意力双向特征融合模块(Attention Bidirectional Feature Fusion Module,ABFFM)与注意力传输连接模块(Attention Transfer Connection Block,ATCB)的注意力特征融合策略并合理优化了网络结构,提升了算法对飞机离散化散射点浅层语义特征的提取与判别.基于自建的Gaofen-3与TerraSAR-X卫星图像混合飞机目标实测数据集,实验对AFFN与基于深度学习的通用目标检测以及SAR图像特定目标检测算法进行了比较,其结果验证了AFFN对SAR图像飞机目标检测的准确性与高效性.
其他语种文摘	Aiming at the problems of high discretization of aircraft's backscattering points, complex background interference of surroundings in Synthetic Aperture Radar (SAR) images and weak representation of shallow semantic features of aircraft by existing algorithms, an Attention Feature Fusion Network (AFFN) was proposed for aircraft detection in SAR images. By introducing Bottleneck Attention Module (BAM), this article constructed an attention feature fusion strategy consisting of Attention Bidirectional Feature Fusion Module (ABFFM) and Attention Transfer Connection Block (ATCB) in AFFN, and rationally optimized the network structure so as to strengthen the abilities of extracting and discriminating shallow semantic features of aircraft. Based on a self-built Gaofen-3 and TerraSAR-X mixed aircraft dataset, AFFN was compared with several CNN-based general object detection methods and methods designed for specific objects in SAR images. The experimental results illustrated the accuracy and effectiveness of our method for aircraft detection in SAR images.
来源	电子学报 ,2021,49(9):1665-1674 【核心库】
DOI	10.12263/DZXB.20200486
关键词	注意力机制 ; 特征融合 ; 飞机目标快速检测 ; SAR图像 ; 卷积神经网络
地址	国防科技大学, 电子信息系统与复杂电磁环境效应国家重点实验室, 湖南, 长沙, 410073
语种	中文
文献类型	研究性论文
ISSN	0372-2112
学科	电子技术、通信技术
基金	国家自然科学基金
文献收藏号	CSCD:7077340