卫星测高反演海洋重力异常的精度分析

Accuracy analysis of marine gravity anomaly inferred by satellite altimetry data

针对卫星测高技术中由于大地水准面取值受各项误差影响导致精度较低的问题,该文联合多源多代卫星测高数据,基于逆Vening-Meinesz公式确定海洋重力异常,进一步对海洋重力异常进行内部和外部检核。结果表明,卫星测高反演的海洋重力异常与EGM2008比较的精度为±7.116mgal;与船测重力异常比较的精度为7.417mgal,这与国际上对测高重力异常与船测重力异常比较精度一致。

The marine gravity anomaly was inferred by inverse Vening-Meinesz formula from the Multi-source and multi-generational satellite altimetry data in the paper. Moreover, the marine gravity anomaly was checked by internal and external methods, which showed that the accuracy of the marine gravity anomaly was ±7. 116 regal when compared with EGM2008, and ±7.417 mgal when compared with the ship, which was consistent with the results of international study by the same checked method.