To retrieve the object region efficaciously from massive remote sensing image database, a model for content-based retrieval of remote sensing image is given according to the characters of remote sensing image applicat...To retrieve the object region efficaciously from massive remote sensing image database, a model for content-based retrieval of remote sensing image is given according to the characters of remote sensing image application firstly, and then the algorithm adopted for feature extraction and multidimensional indexing, and relevance feedback by this model are analyzed in detail. Finally, the contents intending to be researched about this model are proposed.展开更多
Hyperspectral remote sensing has become one of the research frontiers in ground object identification and classification. On the basis of reviewing the application of hyperspectral remote sensing in identification and...Hyperspectral remote sensing has become one of the research frontiers in ground object identification and classification. On the basis of reviewing the application of hyperspectral remote sensing in identification and classification of ground objects at home and abroad. The research results of identification and classification of forest tree species, grassland and urban land features were summarized. Then the researches of classification methods were summarized. Finally the prospects of hyperspectral remote sensing in ground object identification and classification were prospected.展开更多
The spectral characters of hydrocarbons in some oil-bearing strata and soil layers over oil and gas reservoirs in the Junggar Basin and northern Tarim Basin in Xinjiang are compared with those of chemically pure hydro...The spectral characters of hydrocarbons in some oil-bearing strata and soil layers over oil and gas reservoirs in the Junggar Basin and northern Tarim Basin in Xinjiang are compared with those of chemically pure hydrocarbons. The hydrocarbons are characterized by the bi-absorption at 2310nm and 2350nm. Hydrocarbon and radioactive anomalies in oil and gas terrains are found much more widespread than carbonate altcrations. Based on the spectra of heavy hydrocarbons related to oil between 2270nm and 2460nm and refined data treatme nt, remote sensing may hold encouraging promise as a directly prospecting technique for oil and gas resources.展开更多
大气辐射传输会引起卫星传感器获取的信息与实际信息存在出入,进而导致彩钢板建筑信息提取的不准确。据此,文章以兰州市安宁区为例,利用地物光谱仪和卫星影像获取典型彩钢板光谱数据,确定彩钢板反射率影响因素,结合影响因素测试彩钢板...大气辐射传输会引起卫星传感器获取的信息与实际信息存在出入,进而导致彩钢板建筑信息提取的不准确。据此,文章以兰州市安宁区为例,利用地物光谱仪和卫星影像获取典型彩钢板光谱数据,确定彩钢板反射率影响因素,结合影响因素测试彩钢板反射率并分析光谱特征。然后将实测光谱数据分别与影像经FLAASH(Fast Line-of-sight Atmospheric Analysis of Spectral Hypercubes)模型和6S(Second Simulation of the Satellite Signal in the Solar Spectrum)模型大气校正后的光谱信息进行光谱匹配,以确定适合不同颜色彩钢板光谱数据的大气校正方法。结果表明,彩钢板光谱反射率曲线均能反映彩钢板表面颜色特性;FLAASH大气校正更能反映蓝、红彩钢板建筑的真实反射率;6S模型大气校正更能反映白色彩钢板建筑的真实反射率。本研究将为后续彩钢板建筑信息自动解译提供技术支持。展开更多
文摘To retrieve the object region efficaciously from massive remote sensing image database, a model for content-based retrieval of remote sensing image is given according to the characters of remote sensing image application firstly, and then the algorithm adopted for feature extraction and multidimensional indexing, and relevance feedback by this model are analyzed in detail. Finally, the contents intending to be researched about this model are proposed.
文摘Hyperspectral remote sensing has become one of the research frontiers in ground object identification and classification. On the basis of reviewing the application of hyperspectral remote sensing in identification and classification of ground objects at home and abroad. The research results of identification and classification of forest tree species, grassland and urban land features were summarized. Then the researches of classification methods were summarized. Finally the prospects of hyperspectral remote sensing in ground object identification and classification were prospected.
文摘The spectral characters of hydrocarbons in some oil-bearing strata and soil layers over oil and gas reservoirs in the Junggar Basin and northern Tarim Basin in Xinjiang are compared with those of chemically pure hydrocarbons. The hydrocarbons are characterized by the bi-absorption at 2310nm and 2350nm. Hydrocarbon and radioactive anomalies in oil and gas terrains are found much more widespread than carbonate altcrations. Based on the spectra of heavy hydrocarbons related to oil between 2270nm and 2460nm and refined data treatme nt, remote sensing may hold encouraging promise as a directly prospecting technique for oil and gas resources.
基金supported by the National Defense Science and Technology Foundation Strengthening Program(No.2021-JCJQ-JJ-0834)the Fundamental Research Funds for the Central Universities(Nos.NJ2022025,NP2022450)。
文摘大气辐射传输会引起卫星传感器获取的信息与实际信息存在出入,进而导致彩钢板建筑信息提取的不准确。据此,文章以兰州市安宁区为例,利用地物光谱仪和卫星影像获取典型彩钢板光谱数据,确定彩钢板反射率影响因素,结合影响因素测试彩钢板反射率并分析光谱特征。然后将实测光谱数据分别与影像经FLAASH(Fast Line-of-sight Atmospheric Analysis of Spectral Hypercubes)模型和6S(Second Simulation of the Satellite Signal in the Solar Spectrum)模型大气校正后的光谱信息进行光谱匹配,以确定适合不同颜色彩钢板光谱数据的大气校正方法。结果表明,彩钢板光谱反射率曲线均能反映彩钢板表面颜色特性;FLAASH大气校正更能反映蓝、红彩钢板建筑的真实反射率;6S模型大气校正更能反映白色彩钢板建筑的真实反射率。本研究将为后续彩钢板建筑信息自动解译提供技术支持。
