| 短弧长积分法与平均加速度法的比较分析 |
| |
| 引用本文： | 黄强,范东明.短弧长积分法与平均加速度法的比较分析[J].西南交通大学学报,2013,26(3):455-459,480. |
| |
| 作者姓名： | 黄强 范东明 |
| |
| 基金项目： | 中央高校基本科研业务费专项资金资助项目(SWJTU12BR012) |
| |
| 摘 要： | 为比较短弧长积分法和平均加速度法在卫星重力反演中的效果,用Fortran程序语言分别基于短弧长积分法和平均加速度法编写了2套计算程序,对GOCE(重力场和静态海洋环流探测)卫星精密科学轨道进行了反演计算,得到了2组90阶次的重力场模型Model_Arc(短弧长积分法)和Model_Acc(平均加速度法).结果表明:Model_Acc大地水准面阶误差最大在80阶仅4 cm,而Model_Arc在90阶处达到10 cm;2个模型总体上都比用CHAMP和GRACE卫星的轨道数据反演的模型精度高,Model_Acc在80阶次以前比GO_CONS_GCF_2_TIM_R3精度高,但平均加速度法耗时比短弧长积分法长.
|
| 关 键 词： | 短弧长积分法 平均加速度法 重力反演 GOCE(重力场和静态海洋环流探测) |
| 收稿时间： | 2012-06-07 |
Comparison of Short Arc Integral Approach and Average Acceleration Approach in Gravity Field Recovery |
| |
| HUANG Qiang,FAN Dongming.Comparison of Short Arc Integral Approach and Average Acceleration Approach in Gravity Field Recovery[J].Journal of Southwest Jiaotong University,2013,26(3):455-459,480. |
| |
| Authors: | HUANG Qiang FAN Dongming |
| |
| Abstract: | In order to compare the short arc integral approach with the average acceleration approach, two Fortran programs were compiled respectively. Two 90 degrees and orders gravity field models, Model_Arc (for the short arc integral approach) and Model_Acc (for the average acceleration approach), were recovered based on the programs and GOCE (gravity field and steady-state ocean circulation explorer) orbits. The results show that the maximal geoid error is respectively 4 cm at 80 degrees to the Model_Acc and 10 cm at 90 degrees to the Model_arc, the precisions of the Model_Acc and Model_Arc are higher than those of the models based on CHAMP (challenging mini-satellite payload) and GRACE (gravity recovery and climate experiment) orbits. The superiority of the Model_Acc over model GO_CONS_GCF_2_TIM_R3 is accuracy before 80 degrees, while the superiority of the Model_Arc over the Model_Acc is consumed time. |
| |
| Keywords: | |
|
| 点击此处可从《西南交通大学学报》浏览原始摘要信息 |
|
点击此处可从《西南交通大学学报》下载全文 |
|
