jgg     2015 35 (5):  801-806    ISSN: 0412-1961  CN: 21-1139/TG Parameter Estimation of Variogram Model by Weighted Total  Least Squares Regression 1 Faculty of Geomatics, East China Institute of Technology, 418 Guanglan Road, Nanchang 330013, China 2 Key Laboratory  of  Watershed Ecology  and  Geographical Environment Monitoring, NASMG， 418 Guanglan Road, Nanchang 330013, China 3 Jiangxi Province Key Lab for Digital Land, 418 Guanglan Road, Nanchang 330013, China Received: 2015-01-31  Revised: null  Online: 2015-10-10 Supporting info