The polarization properties of light are widely applied in imaging,communications,materials analy⁃sis,and life sciences.Various methods have been developed that can measure the polarization information of a target.How...The polarization properties of light are widely applied in imaging,communications,materials analy⁃sis,and life sciences.Various methods have been developed that can measure the polarization information of a target.However,conventional polarization detection systems are often bulky and complex,limiting their poten⁃tial for broader applications.To address the challenges of miniaturization,integrated polarization detectors have been extensively explored in recent years,achieving significant advancements in performance and functionality.In this review,we focus mainly on integrated polarization detectors with innovative features,including infinitely high polarization discrimination,ultrahigh sensitivity to polarization state change,full Stokes parameters measure⁃ment,and simultaneous perception of polarization and other key properties of light.Lastly,we discuss the oppor⁃tunities and challenges for the future development of integrated polarization photodetectors.展开更多
提出基于改进快速搜索随机树算法的船舶路径规划与跟踪控制方法。采用嵌入Dijkstra算法的改进快速随机搜索树算法(Rapidly⁃Exploring Random Tree,RRT)算法进行船舶路径规划。将规划的优化路径作为船舶运动控制系统的期望输入,基于工业...提出基于改进快速搜索随机树算法的船舶路径规划与跟踪控制方法。采用嵌入Dijkstra算法的改进快速随机搜索树算法(Rapidly⁃Exploring Random Tree,RRT)算法进行船舶路径规划。将规划的优化路径作为船舶运动控制系统的期望输入,基于工业界广为使用的内外环控制思想设计船舶运动学跟踪控制率,较好地解决了欠驱动船舶路径跟踪问题。在船舶动力学子系统中,利用神经网络逼近动力学子系统中的未建模动态和外部干扰,所设计的神经网络滑膜跟踪控制器能有效地跟踪运动学子系统的引导率信号。仿真试验验证了所提出的基于RRT的船舶路径规划与跟踪控制的有效性。展开更多
基金Supported by the National Key Research and Development Program of China(2022YFA1404602)the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB0580000)+3 种基金the National Natural Science Foundation of China(U23B2045,62305362)the Program of Shanghai Academic/Technology Research Leader(22XD1424400)the Fund of SITP Innovation Foundation(CX-461 and CX-522)Special Project to Seize the Commanding Heights of Science and Technology of Chinese Academy of Sciences,subtopic(GJ0090406-6).
文摘The polarization properties of light are widely applied in imaging,communications,materials analy⁃sis,and life sciences.Various methods have been developed that can measure the polarization information of a target.However,conventional polarization detection systems are often bulky and complex,limiting their poten⁃tial for broader applications.To address the challenges of miniaturization,integrated polarization detectors have been extensively explored in recent years,achieving significant advancements in performance and functionality.In this review,we focus mainly on integrated polarization detectors with innovative features,including infinitely high polarization discrimination,ultrahigh sensitivity to polarization state change,full Stokes parameters measure⁃ment,and simultaneous perception of polarization and other key properties of light.Lastly,we discuss the oppor⁃tunities and challenges for the future development of integrated polarization photodetectors.
文摘提出基于改进快速搜索随机树算法的船舶路径规划与跟踪控制方法。采用嵌入Dijkstra算法的改进快速随机搜索树算法(Rapidly⁃Exploring Random Tree,RRT)算法进行船舶路径规划。将规划的优化路径作为船舶运动控制系统的期望输入,基于工业界广为使用的内外环控制思想设计船舶运动学跟踪控制率,较好地解决了欠驱动船舶路径跟踪问题。在船舶动力学子系统中,利用神经网络逼近动力学子系统中的未建模动态和外部干扰,所设计的神经网络滑膜跟踪控制器能有效地跟踪运动学子系统的引导率信号。仿真试验验证了所提出的基于RRT的船舶路径规划与跟踪控制的有效性。
