Special Section on Progress in Snow Remote Sensing

Fractional snow-cover mapping using an improved endmember extraction algorithm

[+] Author Affiliations
Ying Zhang

Lanzhou University, College of Pastoral Agriculture Science and Technology, State Key Laboratory of Grassland Agro-ecosystems, Lanzhou 730020, China

Xiaodong Huang

Lanzhou University, College of Pastoral Agriculture Science and Technology, State Key Laboratory of Grassland Agro-ecosystems, Lanzhou 730020, China

Xiaohua Hao, Jie Wang

Chinese Academy of Science, Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou Gansu 730000, China

Wei Wang

Lanzhou University, College of Pastoral Agriculture Science and Technology, State Key Laboratory of Grassland Agro-ecosystems, Lanzhou 730020, China

Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China

Tiangang Liang

Lanzhou University, College of Pastoral Agriculture Science and Technology, State Key Laboratory of Grassland Agro-ecosystems, Lanzhou 730020, China

J. Appl. Remote Sens. 8(1), 084691 (May 21, 2014). doi:10.1117/1.JRS.8.084691
History: Received January 15, 2014; Revised April 29, 2014; Accepted April 30, 2014
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Abstract.  We describe and validate an improved endmember extraction method to improve the fractional snow-cover mapping based on the algorithm for fast autonomous spectral endmember determination (N-FINDR) maximizing volume iteration algorithm and orthogonal subspace projection theory. A spectral library time series is first established by choosing the expected spectra information using prior knowledge, and the fractional snow cover (FSC) is then retrieved by a fully constrained least squares linear spectral mixture analysis. The retrieved fractional snow-cover products are validated by the FSC derived from Landsat imagery. Our results indicate that the improved algorithm can obtain the endmember information accurately, and the retrieved FSC has better accuracy than the MODIS standard fractional snow-cover product (MOD10A1).

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Ying Zhang ; Xiaodong Huang ; Xiaohua Hao ; Jie Wang ; Wei Wang, et al.
"Fractional snow-cover mapping using an improved endmember extraction algorithm", J. Appl. Remote Sens. 8(1), 084691 (May 21, 2014). ; http://dx.doi.org/10.1117/1.JRS.8.084691


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