“…Research related to the initial orbit determination of space objects using shortarc or sparse measurements from different observation sources is studied in depth (DeMars et al, 2012;Li et al, 2012;Ansalone & Curti, 2013;Bennett et al, 2014;Sang et al, 2014). To the orbit determination using GPS measurements, a large number of studies and effectual methods have been carried out in the past (Montenbruck et al, 2005;Bock et al, 2007;Choi et al, 2010;Gu & Yi, 2011;Chicharro et al, 2013;Wang Xin, 2013).…”