Abstract:For the multisource gravity data, the fusion methods such as Least Square Collocation (LSC) and point mass assumption are studied and then tested within a certain region in Australia with both airborne and ground gravity measurement data. The results show that the accuracy of multiresolution LSC proposed is ±36×10-5m/s2, while that of the least square total collocation is ±8.4×10-5m/s2.The accuracy of four layers point mass model including airborne dada is ±4.6×10-5m/s2, while that of the three layers point mass model with ground data only is ±5.6×10-5m/s2. And the illposed problem in LSC vanishes in the point mass model.
Gao Xinbing,,Li Shanshan et al. APPLICATION OF POINT MASS MODEL AND LEAST SQUARECOLLOCATION IN MULTI-SOURCE GRAVITY DATA FUSION[J]. jgg, 2013, 33(1): 145-149.