发明人：陶然，杨俊华，郇浩

申请日期：2023.08.24

摘要：本发明公开了一种基于多角度的频偏估计及干扰源定位方法，包括仪器获取/仿真生成接收机接收的干扰源目标信号，对所述干扰源目标信号下变频、去调制得到干扰源目标的多普勒信号；利用所述干扰源目标的多普勒信号通过后向投影定位技术搜索得到不同子孔径下目标的斜视角信息；基于频偏与斜视角之间的几何关系构造非线性方程组 ...

发明人：陶然，王猛，郇浩，岳富占

申请日期：2023.03.10

摘要：本发明提供一种用于航天器的GNSS自主定轨方，根据GNSS信号捕获跟踪后实时获得的观测量，结合轨道动力学模型和观测量模型，实现航天器在轨实时自主定轨，提高航天器定位定轨精度。同时，提出了基于多项式拟合的GNSS观测量预处理，以及自主定轨滤波器收敛判决条件，保证了航天器自主定轨滤波稳定性。本发明实现的 ...

发明人：陶然，叶沅鑫，杨超，李伟

申请日期：2023.06.25

摘要：本发明提供一种高精度的多模态遥感影像自动匹配方法和系统，所述方法包括：获取参考图像和输入图像并制作多模态遥感影像训练与测试数据集；分别提取参考影像和输入影像的逐像素特征表达图；通过构建多分支全局注意力模块来增强逐像素特征表达图的结构特征描述，从而得到注意力增强的结构特征描述图；利用图像整体与局部信息 ...

作者：Xiaobin Zhao¹;Mengmeng Zhang²;CA;Wei Li²;Kun Gao¹;Ran Tao²; （¹a School of Optics and Photonics, Beijing Institute of Technology, Beijing, China;²b School of Information and Electronics, Beijing Institute of Technology, Beijing, China）

出处：Remote Sensing Letters 2023

关键词：hyperspectral image;target detection;sparse representation;Cauchy distance

摘要：Hyperspectral target detection under complex background is a challenging and difficult task in remote-sensing earth observation. However, most existin ...

作者：Jiayu Sun¹;Hao Huan¹;Ran Tao¹;Yue Wang¹;Xiaogang Tang²; （¹School of Information and Electronics, Beijing Institute of Technology, Beijing, China ²School of Aerospace Information, Space Engineering University, Beijing, China）

出处：IEEE Geoscience and Remote Sensing Letters 2023

关键词：Doppler effect;Azimuth;Estimation;Mathematical models;Location awareness;Signal to noise ratio;Frequency modulation

摘要：In emitter localization, the synthetic aperture positioning technique can achieve high-precision positioning even at a low signal-to-noise ratio (SNR) ...

作者：Yuxiang Zhang^1,2;Wei Li^1,2;Mengmeng Zhang^1,2;Ying Qu³;Ran Tao^1,2;Hairong Qi³; （¹School of Information and Electronics, Beijing Institute of Technology, Beijing, China ²Beijing Key Laboratory of Fractional Signals and Systems, Beijing Institute of Technology, Beijing, China ³Department of Electrical Engineering and Computer Science, Advanced Imaging and Collaborative Information Processing Group, University of Tennessee, Knoxville, TN, USA）

出处：IEEE Transactions on Neural Networks and Learning Systems 2023

关键词：Feature extraction;Convolutional neural networks;Task analysis;Adaptation models;Training;Data mining;Semantics

摘要：Domain adaptation techniques have been widely applied to the problem of cross-scene hyperspectral image (HSI) classification. Most existing methods us ...

作者：Yingjie Tang¹;Shou Feng^1,2;Chunhui Zhao¹;Yuanze Fan¹;Qian Shi³;Wei Li²;Ran Tao²; （¹College of Information and Comminication Engineering, Harbin Engineering University, China ²School of Information and Electronics, Beijing Institute of Technology, Beijing, China ³School of Geography and Planning, Guangdong Provincial Key Laboratory for Urbanization and GeoSimulation, Sun Yat-sen University, Guangzhou, China）

出处：IEEE Transactions on Geoscience and Remote Sensing 2023

关键词：Feature extraction;Task analysis;Wavelet transforms;Correlation;Remote sensing;Robustness;Data mining

摘要：Change detection is a prominent research direction in the field of remote sensing image processing. However, most current change detection methods foc ...

作者：姜盛¹;，武进敏¹;，鲁溟峰²;，魏洪涛²;，范军芳¹;，张峰²;，陶然²; （¹北京信息科技大学自动化学院；²北京理工大学信息与电子学院）

出处：计量学报 2023

关键词：计量学；波长测量；迈克尔逊干涉法；chirp信号；分数傅里叶变换；相对误差

摘要：建立了迈克尔逊干涉法测量波长所得条纹图的数学模型，揭示了其线性调频信号（chirp信号）特性，提出了基于分数傅里叶变换信号处理方法对迈克尔逊干涉条纹进行处理，实现了激光波长测量。实验结果表明：该测量方法具有可行性，对于波长范围为400～635 nm的激光，波长测量的平均相对误差约为0.39%。在干涉 ...

发明人：李伟，胡文帅，张蒙蒙，陶然

申请日期：2023.08.24

摘要：本发明提供一种轻量级张量卷积长短时记忆网络的高光谱分类方法，针对空谱卷积长短时记忆单元权重参数量多、存储复杂度高等问题，基于张量链式分解设计出两种轻量级张量空谱卷积长短时记忆单元：(1)将每个门结构中每个卷积运算分别扩展至张量域；(2)将当前时刻输入数据和前一时刻输出数据对应的4个卷积核分别集成，堆 ...

发明人：李伟，胡文帅，张蒙蒙，陶然

申请日期：2023.08.24

摘要：本发明提供一种基于全光谱相关性学习网络的高光谱图像分类方法，针对相邻光谱波段之间和非相邻光谱波段之间存在的相关性，设计全光谱相关性自适应学习模块，并以其为基本结构单元，构建主干特征提取网络，提取联合光谱相关性增强、保留本征几何结构的深度语义空谱特征；提取具有细节信息和可解释性信息的传统手工特征，并借 ...