“…This technique is called space VLBI (SVLBI). SVLBI projects have been proposed or planned by several agencies, including Quasat, by the European Space Agency and NASA in 1980s (Schilizzi et al 1984;Schilizzi 1988); VSOP, by the Institute for Space and Astronautical Science in Japan (Hirabayashi 1988), which was successfully launched on 1997 February 12 (Hirabayashi et al 1997a,b); and, RADIOASTRON, by the Space Research Institute of the USSR Academy of Sciences (Kardashev & Slysh 1988), which was launched on 2011 July 18 (Alexandrov et al 2012). The Chinese Space VLBI project (hereafter C-SVLBI), which was recently proposed by Shanghai Astronomical Observatory and National Space Science Center of China, plans to launch two antennas into Earth orbit as a first step (Hong et al 2013;Shen et al 2013).…”