关键词
基于RF-SVR的燃油计量装置性能衰退检测和剩余寿命估计方法
作者: 来晨阳   郭迎清   于华锋   来源: 航空动力学报 年份: 2019 文献类型 : 期刊 关键词: 支持向量回归   随机森林   健康管理   剩余使用寿命   性能衰退   发动机燃油系统  
描述: 为了实现航空发动机燃油系统的安全状态监测和健康管理,开展了燃油系统性能衰退检测和剩余使用寿命估计方面的研究。以燃油系统燃油计量装置为例,分析了其主要的性能衰退模式,设计了基于电流-速度数据的健康指标
航空涡扇引擎剩余使用寿命预测算法研究
作者: 吴锐   马洁   丁恺林   来源: 南京理工大学学报 年份: 2020 文献类型 : 期刊 关键词: 航空   预测   全特征输入   长短时记忆单元   剩余使用寿命   涡扇引擎  
描述: 航空涡扇引擎剩余使用寿命预测算法研究
基于RF-SVR的燃油计量装置性能衰退检测和剩余寿命估计方法
作者: 来晨阳   郭迎清   于华锋   来源: 航空动力学报 年份: 2019 文献类型 : 期刊 关键词: 支持向量回归   随机森林   健康管理   剩余使用寿命   性能衰退   发动机燃油系统  
描述: 为了实现航空发动机燃油系统的安全状态监测和健康管理,开展了燃油系统性能衰退检测和剩余使用寿命估计方面的研究。以燃油系统燃油计量装置为例,分析了其主要的性能衰退模式,设计了基于电流-速度数据的健康指标
航空涡扇引擎剩余使用寿命预测算法研究
作者: 吴锐   马洁   丁恺林   来源: 南京理工大学学报 年份: 2020 文献类型 : 期刊 关键词: 航空   预测   全特征输入   长短时记忆单元   剩余使用寿命   涡扇引擎  
描述: 航空涡扇引擎剩余使用寿命预测算法研究
EGMT-CD: Edge-Guided Multimodal Transformers Change Detection from Satellite and Aerial Images
作者: Yunfan   Xiang     Xiangyu   Tian     Yue   Xu     Xiaokun   Guan     Zhengchao   Chen   来源: Remote Sensing 年份: 2023 文献类型 : 期刊 关键词: sensing   detection   images   edge   Transformer   feature   change   remote   alignment   heterogeneous  
描述: Change detection from heterogeneous satellite and aerial images plays a progressively important role in many fields, including disaster assessment, urban construction, and land use monitoring. Currently, researchers have mainly devoted their attention to change detection using homologous image pairs and achieved many remarkable results. It is sometimes necessary to use heterogeneous images for change detection in practical scenarios due to missing images, emergency situations, and cloud and fog occlusion. However, heterogeneous change detection still faces great challenges, especially using satellite and aerial images. The main challenges in satellite and aerial image change detection are related to the resolution gap and blurred edge. Previous studies used interpolation or shallow feature alignment before traditional homologous change detection methods, which ignored the high-level feature interaction and edge information. Therefore, we propose a new heterogeneous change detection model based on multimodal transformers combined with edge guidance. In order to alleviate the resolution gap between satellite and aerial images, we design an improved spatially aligned transformer (SP-T) with a sub-pixel module to align the satellite features to the same size of the aerial ones supervised by a token loss. Moreover, we introduce an edge detection branch to guide change features using the object edge with an auxiliary edge-change loss. Finally, we conduct considerable experiments to verify the effectiveness and superiority of our proposed model (EGMT-CD) on a new satellite–aerial heterogeneous change dataset, named SACD. The experiments show that our method (EGMT-CD) outperforms many previously superior change detection methods and fully demonstrates its potential in heterogeneous change detection from satellite–aerial images.
EGMT-CD: Edge-Guided Multimodal Transformers Change Detection from Satellite and Aerial Images
作者: Yunfan   Xiang     Xiangyu   Tian     Yue   Xu     Xiaokun   Guan     Zhengchao   Chen   来源: Remote Sensing 年份: 2023 文献类型 : 期刊 关键词: sensing   detection   images   edge   Transformer   feature   change   remote   alignment   heterogeneous  
描述: Change detection from heterogeneous satellite and aerial images plays a progressively important role in many fields, including disaster assessment, urban construction, and land use monitoring. Currently, researchers have mainly devoted their attention to change detection using homologous image pairs and achieved many remarkable results. It is sometimes necessary to use heterogeneous images for change detection in practical scenarios due to missing images, emergency situations, and cloud and fog occlusion. However, heterogeneous change detection still faces great challenges, especially using satellite and aerial images. The main challenges in satellite and aerial image change detection are related to the resolution gap and blurred edge. Previous studies used interpolation or shallow feature alignment before traditional homologous change detection methods, which ignored the high-level feature interaction and edge information. Therefore, we propose a new heterogeneous change detection model based on multimodal transformers combined with edge guidance. In order to alleviate the resolution gap between satellite and aerial images, we design an improved spatially aligned transformer (SP-T) with a sub-pixel module to align the satellite features to the same size of the aerial ones supervised by a token loss. Moreover, we introduce an edge detection branch to guide change features using the object edge with an auxiliary edge-change loss. Finally, we conduct considerable experiments to verify the effectiveness and superiority of our proposed model (EGMT-CD) on a new satellite–aerial heterogeneous change dataset, named SACD. The experiments show that our method (EGMT-CD) outperforms many previously superior change detection methods and fully demonstrates its potential in heterogeneous change detection from satellite–aerial images.
深度卷积网络在航空高光谱岩性识别中的应用——以塔木素铀矿床北部地区为例
作者: 张川     易敏     童勤龙     叶发旺     徐清俊     李泊凇   来源: 世界核地质科学 年份: 2024 文献类型 : 期刊 关键词: 卷积神经网络   深度学习   航空高光谱遥感   岩性识别  
描述: 岩矿信息识别是高光谱遥感在地质勘探领域的主要应用方向。传统高光谱遥感方法尽管在矿物识别中取得了良好效果,但对于岩性识别存在瓶颈。深度学习是当前人工智能领域的研究热点,卷积神经网络是适用于图像识别
基于深度卷积神经网络的航空器检测与识别
作者: 俞汝劼   杨贞   熊惠霖   来源: 计算机应用 年份: 2017 文献类型 : 期刊 关键词: 卷积神经网络   深度学习   目标检测识别   航空器检测  
描述: 突破,而基于卷积神经网络的航空器目标检测识别算法充分利用了计算硬件的优势,大大缩短了任务耗时。在符合应用场景的自采数据集上进行测试,所提算法目标检测实时性达到平均每张5.765 s,在召回率65.1
基于CenterNet的航空遥感图像目标检测
作者: 杨曦中   高冠鸿   熊智   张玲   来源: 航空电子技术 年份: 2022 文献类型 : 期刊 关键词: 目标检测   深度学习   神经网络   CenterNet  
描述: 为实现高精度的航空图像目标检测,将Anchor free的目标检测算法CenterNet应用到检测中,同时使用Resnet50主干网络,并引入CIoU损失替代原有损失函数对网络模型做出了改进。改进后的算法在RSOD与DIOR数据集上进行测试,结果显示在保证网络轻量化的前提下检测精度有明显的提高,证明了算法在航空目标检测方面的可行性与准确性。
旋转式航空重力梯度仪动态测量误差传递模型与事后误差补偿
作者: 程一   李桐林   周帅   来源: 地球物理学报 年份: 2022 文献类型 : 期刊 关键词: 误差传递模型   事后误差补偿   深度学习   重力梯度仪  
描述:深度学习方法对航空动态测量误差进行补偿,并基于误差传递传递模型建立仿真数据样本集验证了方法的有效性;最后,通过航空重力梯度仪实测数据的处理和应用,验证了本文建立事后误差补偿方法的泛化性,进一步验证了本文建立方法在航空动态测量噪声抑制中的实用性,为航空重力梯度动态测量数据的处理提供技术储备.
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