9Parker R L. The rapid calulation of potential anomalies [ J ]. Geophys J. K. artr. Soc. ,1972,31:447 -455.
10Walter H F, Smith David and Sandwell T. Bathymetry prediction from dense satellite altimetry and sparse shipboard bathymetry[J]. J Geophys Res, 1994,99( Btl ):21 803 - 21 824.