[2] [2] PLAZA A,DU Q,BIOUCAS-DIAS J M,et al.Foreword to the special issue on spectral unmixing of remotely sensed data[J]．IEEE Transactions on Geoscience & Remote Sensing，2011,49(11):4103-4110.

[3] [3] ATKINSON P M.Mapping subpixel boundaries from remotely sensed images［M］//KEMP Z.Innovations in GIS IV.London:CRC Press,1997,12:166-180.

[4] [4] THORNTON M W,ATKINSON P M,HOLLAND D A.Alinearised pixel-swapping method for mapping rural linear land cover features from fine spatial resolution remotely sensed imagery[J].Computers & Geosciences,2007,33(10):1261-1272.

[5] [5] LV Y,GAO W,YANG C,et al.A novel spatial-spectral extraction method for subpixel surface water[J].International Journal of Remote Sensing,2020,41(7):2477-2499.

[6] [6] LING F,DU Y,ZHANG Y,et al.Burned-area mapping at the subpixel scale with modis images[J].IEEE Geoscience& Remote Sensing Letters,2015,12(9):1963-1967．

[7] [7] WU S,CHEN Z,REN J,et al.An improved subpixel mapping algorithm based on a combination of the spatial attraction and pixel swapping models for multispectral remote sensing imagery [J].IEEE Geoscience and Remote Sensing Letters,2018,15(7):1070-1074.

[8] [8] CHEN Y,GE Y,CHEN Y,et al.Subpixel land cover mapping using multiscale spatial dependence[J].IEEE Transactions on Geoscience & Remote Sensing,2018,56(9):5097-5106.

[9] [9] WANG Q,SHI W,ATKINSON P M,et al.Land cover change detection at subpixel resolution with a Hopfield neural network[J].IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,2015,8(3):1339-1352.

[10] [10] WANG P,WU Y,LEUNG H.Subpixel land cover mapping based on a new spatial attraction model with spatial-spectral information[J].International Journal of Remote Sensing,2019,40(15-16):6444-6463.

[11] [11] WANG Q,SHI W,ATKINSON P M.Sub-pixel mapping of remote sensing images based on radial basis function interpolation [J].ISPRS Journal of Photogrammetry & Remote Sensing,2014,92(92):1-15.

[12] [12] ZHONG Y,WU Y,XU X,et al.An adaptive subpixel mapping method based on map model and class determination strategy for hyperspectral remote sensing imagery[J].IEEE Transactionson Geoscience and Remote Sensing,2015,53(3):1411-1426.

[13] [13] GE Y,CHEN Y H,STEI N A,et al.Enhanced subpixel mapping with spatial distribution patterns of geographical objects[J].IEEE Transactions on Geoscience & Remote Sensing,2016,54(4):2356-2370.

[14] [14] XU X,TONG X H,ANTONIO P,et al.A new spectral-spatial sub-pixel mapping model for remotely sensed hyperspectral imagery[J].IEEE Transactions on Geoscience & Remote Sensing,2018,56(11):6763-6778.

[15] [15] CANDèS E,WAKIN M B,BOYD S P.Enhancing sparsity by reweighted L1 minimization[J].Journal of Fourier Analysis & Applications,2007,14(5):877-905.

[16] [16] BECK A,TEBOULLE M.Fast gradient-based algorithms for constrained total variation image denoisingand deblurring problems[J].IEEE Transactions on Image Processing,2009,18(11):2419-2434.

[17] [17] HE W,ZHANG H Y,ZHANG L P.Total variation regularized reweighted sparse nonnegative matrix factorization for hyperspectral unmixing[J].IEEE Transactions on Geoscience & Remote Sensing,2017,55(7):3909-3921.

[19] [19] RUDIN L.Nonlinear total variation based noise removal algorithms[J].Physica D:Nonlinear Phenomena,1992,60(1-4):259-268.

[20] [20] XU X,TONG X H,ANTONIO P,et al.Joint sparse sub-pixel mapping model with endmember variability for remotely sensed imagery[J].Remote Sensing,2016,9(1):1-20.