【摘要】 将基于独立成分分析(independent component analysis,ICA)技术的盲分解方法(blind signal separation,BSS)应用于遥感混合像元的定量分解,解决了幅度不确定性问题,实现了从高光谱数据中同时得到定量的组分光谱信息和组分权重信息。通过数值模拟实验提出了光谱反演区间的选择方法,进一步完善了该算法,且讨论了算法的稳健性。以陕西省横山县为试验区,从HYPERION高光谱影像中反演了各像元的植被覆盖度,并利用SPOT5影像进行了精度验证,结果表明该方法具有较高的精度。更多还原

【Abstract】 Blind signal separation(BSS)based on the technique of independent component analysis(ICA)was introduced to the quantitative remote sensing field for mixed pixel unmixing.The scale invariant problem of the classical method was solved and the spectral and weight information of components was synchronously gained from hyperspectral data.The algorithm was further improved in the computer numerical simulation experiments,where the method for choosing best spectral coverage for retrieval was presented.Its robustness was also discussed.It was finally applied on the HYPERION hyperspectral image of the study area in Hengshan county,Shanxi Province,for retrieving the vegetation cover in pixels.The accuracy validation by using SPOT5 image shows the high accuracy of this algorithm.更多还原