海洋测绘2017，Vol.37Issue(4)：24-27,4.DOI:10.3969/j.issn.1671-3044.2017.04.005
HY-2A测高数据对重力异常反演精度的影响分析
Effection Analysis for Gravity Precision from HY-2A Altimeter Data
摘要
Abstract
The effection for gravity anomaly of South China Sea from HY-2A data is analyzed via associating with HY-2A,TP and Evisat altimeter data.Firstly,HY-2A data is compared with TP and Envisat data.The statistics of cross points RMS that before and after collinear process and crossover adjustment indicate that the precision of HY-2A is better than that of TP (after orbit changed) and Envisat.The inverse Vening-Meinesz formula is used to calculate the gravity anomaly of South China Sea,and the resolution is 15'× 15'.Comparing with the ship gravity measurement,the result indicates that gravity anomaly precision with HY-2A data is ±6.13 mGal.It is better than the result without HY-2A data.And the difference value distribution rule between calculation gravity anomaly and ship measured gravity anomaly is analyzed.The result shows that HY-2A altimeter data is meaningful to improve the precision of marine gravity anomaly.关键词
卫星测高/HY-2A卫星高度计/共线处理/交叉点平差/重力异常Key words
satellite altimetry/HY-2A satellite altimeter/collinear/crossover adjustment/gravity anomaly分类
天文与地球科学引用本文复制引用
万剑华,李瑞洲,刘善伟,杨俊钢..HY-2A测高数据对重力异常反演精度的影响分析[J].海洋测绘,2017,37(4):24-27,4.基金项目
国家自然科学基金(61571009) （61571009）
青岛市应用基础研究计划(15-9-1-50-jch) （15-9-1-50-jch）
海洋公益性行业科研专项(201305032) （201305032）
中欧龙计划合作项目(10466). （10466）
