渤海湾多源重力数据的自适应融合处理

The Adaptive Fusion of Multi-source Gravity Data in Bohai Gulf

在最小二乘逐步配置基础上,提出多源重力数据自适应融合处理方法,构建基于传统逐步配置的自适应融合以及基于递推配置的自适应融合两种融合模式。分别利用两种融合模式对渤海湾陆海交界区域的航空重力数据、卫星测高反演重力数据以及陆地重力数据进行融合处理,其中基于递推配置的自适应融合模式取得了较优的融合效果。通过两个区域船测重力数据的外部检核表明,融合数据的精度分别达到3.7×10-5m/s2和2.1×10-5m/s2。

Based on the least square stepwise collocation,the adaptive fusion method is presented which has two fusion modes including the mode based on the traditional stepwise collocation and the mode based on the new recursion collocation.The airborne gravity data,satellite altimetry gravity data and land gravity data are fused by using the two fusion modes.The computation results show that the fusion based on recursion collocation has better accuracy and reliability than the other modes.According to the extra-verification with ship borne gravity data in two areas,the fusion accuracy is about 3.7×10-5 m/s2 and 2.1×10-5 m/s2 respectively.