利用GOCE卫星轨道数据反演地球重力场模型  

Recovery of Earth’s Gravitational Field Model Based on GOCE Satellite Orbits

作　　者：黄强[1] 范东明[1] 游为[1] 

机构地区：[1]西南交通大学地球科学与环境工程学院,成都市二环路北一段111号610031

出　　处：《武汉大学学报（信息科学版）》2013年第8期907-910,共4页Geomatics and Information Science of Wuhan University

基　　金：中央高校基本科研业务费专项资金资助项目(SWJTU12BR012)

摘　　要：在能量守恒法和短弧长积分法的基础上,利用Fortran程序语言编写了两套计算程序,分别利用两种方法计算了62d的GOCE轨道得到Model_ENG(能量法)和Model_SAC1(短弧长积分法)两组模型,利用短弧长积分法计算了近1a的GOCE轨道得到Model_SAC2。对两种方法反演的结果,以及利用其他低轨卫星反演的结果进行了比较,结果显示,短弧长积分法的精度要高于能量守恒法,Model_SAC2精度高于EIGEN-champ03s和90dGRACE轨道反演的模型Model_GRA,并且在30阶以前与国际上反演的GOCE-only模型GO_CONS_GCF_2_TIM_R3精度一致。Two Fortran programs were compiled based on energy balance approach and short arc integral approach respectively. Both Model_ENG （energy balance approach） and Model_ SAC1 （short arc integral approach） were recovered based on 62 days GOCE orbits, while Model_SAC2 was recovered based on 1 a GOCE orbits. The results show that short arc inte- gral approach has a higher precision than energy balance approach. The precision of the Model_SAC2 is higher than EIGEN-champ03s and Model_GRA, recovered based on 90 days GRACE orbits. Model_SAC2 and GOCE-only model GO_CONS GCF 2 TIM_R3 have the same precision before 30 degrees.

关 键 词：GOCE 精密科学轨道 重力场反演 能量守恒法 短弧长积分法 

分 类 号：P223.0[天文地球—大地测量学与测量工程] P228.42[天文地球—测绘科学与技术]