针对多模态遥感影像存在非线性辐射畸变的问题,本文提出了一种结合相位对称特征与基于排序局部自相似性的多模态遥感影像匹配方法.首先,利用影像的局部相位信息构造相位对称图,在此基础上利用加速分段测试特征提取算法(features from ac...针对多模态遥感影像存在非线性辐射畸变的问题,本文提出了一种结合相位对称特征与基于排序局部自相似性的多模态遥感影像匹配方法.首先,利用影像的局部相位信息构造相位对称图,在此基础上利用加速分段测试特征提取算法(features from accelerated segment test,FAST)对相位对称图进行特征提取.然后结合基于排序的局部自相似性与相位一致性构造一种新的特征描述符RPCLSS(combining rank,phase congruency and local self-similarity descriptor).最后利用快速抽样一致性算法(fast sample consensus,FSC)进行误匹配点剔除.将本文方法在公开的多源遥感影像数据集上与现有的5种先进匹配方法进行对比实验.实验结果表明,本文方法在正确匹配点数量、匹配精度和匹配正确率方面,优于现有的先进多模态遥感影像匹配方法.展开更多
Lunar soil simulants(LSS)have been pivotal in the success of past and current lunar missions.They have enhanced the design of lander and rover wheels through interaction studies on the lunar testbed under simulated en...Lunar soil simulants(LSS)have been pivotal in the success of past and current lunar missions.They have enhanced the design of lander and rover wheels through interaction studies on the lunar testbed under simulated environmental conditions.They have also been used to evaluate the geotechnical,geomechanical,and dynamic characteristics of the lunar soil(LS),which is vital for future lunar outposts.While most simulants have focused on either the chemical and mineralogical or geotechnical properties,developing a comprehensive LSS that mimics the lunar soil is of paramount importance for lander and rover soft-landing and future lunar habitation.This article presents the significant development and characterization of the new LSS NYUAD-1,the first regional soil simulant tailored for the planned Emirates lunar missions.The material and geotechnical properties of NYUAD-1,including chemical composition,mineralogy,particle size,morphology,specific gravity,density,shear strength,and compressibility behaviors,were assessed through laboratory tests conducted per ASTM standards.Comparative analysis with authentic lunar regolith and various regolith simulants confirms the significance and applicability of NYUAD-1 for lunar-based research,offering a promising step toward future lunar habitation.展开更多
文摘针对多模态遥感影像存在非线性辐射畸变的问题,本文提出了一种结合相位对称特征与基于排序局部自相似性的多模态遥感影像匹配方法.首先,利用影像的局部相位信息构造相位对称图,在此基础上利用加速分段测试特征提取算法(features from accelerated segment test,FAST)对相位对称图进行特征提取.然后结合基于排序的局部自相似性与相位一致性构造一种新的特征描述符RPCLSS(combining rank,phase congruency and local self-similarity descriptor).最后利用快速抽样一致性算法(fast sample consensus,FSC)进行误匹配点剔除.将本文方法在公开的多源遥感影像数据集上与现有的5种先进匹配方法进行对比实验.实验结果表明,本文方法在正确匹配点数量、匹配精度和匹配正确率方面,优于现有的先进多模态遥感影像匹配方法.
基金from Sandooq al Watan is acknowledged(No.ADHPG-S1570)This work was partially supported by the Sand Hazards and Opportunities for Resilience,Energy,and Sustainability(SHORES)Center,funded by Tamkeen under the NYUAD Research Institute Award CG013The authors also acknowledge the Mohammed Bin Rashid Space Centre’s(MBRSC)Emirates Lunar Mission(EML)group’s continued support in making the research project successful.
文摘Lunar soil simulants(LSS)have been pivotal in the success of past and current lunar missions.They have enhanced the design of lander and rover wheels through interaction studies on the lunar testbed under simulated environmental conditions.They have also been used to evaluate the geotechnical,geomechanical,and dynamic characteristics of the lunar soil(LS),which is vital for future lunar outposts.While most simulants have focused on either the chemical and mineralogical or geotechnical properties,developing a comprehensive LSS that mimics the lunar soil is of paramount importance for lander and rover soft-landing and future lunar habitation.This article presents the significant development and characterization of the new LSS NYUAD-1,the first regional soil simulant tailored for the planned Emirates lunar missions.The material and geotechnical properties of NYUAD-1,including chemical composition,mineralogy,particle size,morphology,specific gravity,density,shear strength,and compressibility behaviors,were assessed through laboratory tests conducted per ASTM standards.Comparative analysis with authentic lunar regolith and various regolith simulants confirms the significance and applicability of NYUAD-1 for lunar-based research,offering a promising step toward future lunar habitation.
