9Miyazaki S, Saito T, Sasaki M, Hatanaka Y, Iimura Y. Expansion of GSI' s Nationwide GPS Array [ J ]. Bulletin of Geographical Survey Institute, 1997,43 : 23 - 34.
10Miyazaki S, Hatanaka Y, Sagiya T, Tada T. The Nationwide GPS Array as an earth observation system [J]. Bulletin of Geographical Survey Institute, 1998, 44:11-22.