jgg     2015 35 (3):  436-439    ISSN: 0412-1961  CN: 21-1139/TG The Robust Kalman Filtering with Continuous Variable  Equivalent Weight Function 1 School of Geosciences and Info-Physics, Central South University, 932 South-Lushan Road, Changsha 410083, China Received: 2014-03-15  Revised: null  Online: 2015-06-02 Supporting info