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基于极化特征识别的地貌识别策略
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作者 谢景海 孙密 +3 位作者 郭嘉 贾祎轲 卢诗华 苏东禹 《火力与指挥控制》 CSCD 北大核心 2020年第6期73-79,共7页
为满足其近感测量精度,需对探测范围内的地貌环境进行有效识别。提出一种基于最优投影的地貌识别算法,为现代空域近感平台提供必要的地貌识别能力。定义了利用目标散射矩阵特征值构成的特征参数,且该参数与探测信号强度、角度等参数均无... 为满足其近感测量精度,需对探测范围内的地貌环境进行有效识别。提出一种基于最优投影的地貌识别算法,为现代空域近感平台提供必要的地貌识别能力。定义了利用目标散射矩阵特征值构成的特征参数,且该参数与探测信号强度、角度等参数均无关,仅相关于探测区域内的地形结构特征。并结合Krogager关于目标散射矩阵分解的相关思想,建立带参数的标准散射体旋转不变矩阵,将探测区域内的地貌极化散射矩阵投影至标准体,得到目标散射矩阵在每一标准体的权值,并通过最优化投影进一步判定该地貌属性,从而达到识别的目的。 展开更多
关键词 极化信号 最优投影 空域平台 地貌识别 旋转不变矩阵
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Multi-domain High-Resolution Platform for Integrated Spectroscopy and Microscopy Characterizations 被引量:1
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作者 Li Wang Shen-long Jiang +1 位作者 Qun Zhang Yi Luo 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2020年第6期680-685,I0002,共7页
In recent decades,materials science has experienced rapid development and posed increasingly high requirements for the characterizations of structures,properties,and performances.Herein,we report on our recent establi... In recent decades,materials science has experienced rapid development and posed increasingly high requirements for the characterizations of structures,properties,and performances.Herein,we report on our recent establishment of a multi-domain(energy,space,time)highresolution platform for integrated spectroscopy and microscopy characterizations,offering an unprecedented way to analyze materials in terms of spectral(energy)and spatial mapping as well as temporal evolution.We present several proof-of-principle results collected on this platform,including in-situ Raman imaging(high-resolution Raman,polarization Raman,low-wavenumber Raman),time-resolved photoluminescence imaging,and photoelectrical performance imaging.It can be envisioned that our newly established platform would be very powerful and effective in the multi-domain high-resolution characterizations of various materials of photoelectrochemical importance in the near future. 展开更多
关键词 Multi-domain platform Spectral/spatial/temporal resolution Integrated characterizations SPECTROSCOPY MICROSCOPY Imaging
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