jgg     2015 35 (1):  122-125    ISSN: 0412-1961  CN: 21-1139/TG Penalized Least Square Estimator for Non-Linear Models 1 Geomatics College，Shandong University of Science and Technology，579 Qianwangang Road, Qingdao 266510， China 2 Mining College, Guizhou University，Huaxi District, Guiyang 550025, China Received: 2014-02-12  Revised: null  Online: 2015-02-06 Supporting info