Fusion calculation method of MODIS broadband emissivity and GLASS broadband emissivity

The invention provides a fusion calculation method of MODIS broadband emissivity and GLASS broadband emissivity. The method comprises the following steps: firstly, converting MODIS narrow-band emissivity into the MODIS broadband emissivity, respectively fitting the MODIS broadband emissivity and the GLASS broadband emissivity on the basis of a mixed index model, so as to obtain corresponding covariance model coefficients, which include a block variance, a base variance of a first index model and a base variance of a second index model; respectively determining corresponding adjusting operators of the MODIS broadband emissivity and the GLASS broadband emissivity by the obtained block variance, base variance of the first index model and base variance of the second index model; calculating corresponding error covariance models by the adjusting operators; and carrying out a fusion of the MODIS broadband emissivity and the GLASS broadband emissivity by an ideal interpolation algorithm on the basis of the two error