...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Geosciences >Feasible Multiple Satellite Mission Scenarios Flying in a Constellation for Refinement of the Gravity Field Recovery
【24h】

Feasible Multiple Satellite Mission Scenarios Flying in a Constellation for Refinement of the Gravity Field Recovery

机译：在星座中飞行的可行的多颗卫星任务场景，用于优化重力场恢复

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Improving the gravity field recovery in terms of error levels and more isotropic noise distribution by adding cross-track and radial information to the satellite observables has been investigated through a number of studies by a variety of satellite constellations, i.e. satellite pairs that orbit the Earth in alternative configurations than the current GRACE (Gravity Recovery And Climate Experiment) gravity mission. This contribution gives for the first time a comparative study considering the recovery of the global gravity field from three constellations flying in satellite pairs in different directions (i.e. along-track, cross-track and radial). The three constellations include: 1) Foursatellite Bender configuration (flying in two pairs) of type along-track observations, 2) Three-satellite GRAPEN (combined GRACE with Pendulum formations) configuration of type cross-alongtrack observations, 3) Four-satellite Cartwheel configuration (flying in two pairs) of type radialalong-track observations. Additionally, a GRACE mission scenario is added as a reference “comparative” mission. The orbits of all satellites are considered to fly with drag-free system, however, realistic white noise has been added to the simulated observations to mimic the error associated with the drag-free measurement. The results are analyzed in the spectral wavelength spectrum of the gravity field up to a spherical harmonics degree of n = 100 and are plotted spatially on earth maps. The results show that the Three-satellite GRAPEN constellation provides, besides its low economically launches, an improved gravity field solution with respect to the Four-satellite Bender and the Four-satellite Cartwheel constellations.
机译：通过对各种卫星星座（即，绕地球旋转的卫星对）进行的多项研究，研究了通过向卫星可观测物添加跨轨和径向信息来提高重力场在误差水平和更各向同性的噪声分布方面的恢复能力。替代当前GRACE（重力恢复和气候实验）重力任务的配置。这一贡献首次提供了一项比较研究，考虑了从三个不同方向的卫星对中飞行的三个星座（即沿航迹，交叉航迹和径向）恢复的全球重力场。这三个星座包括：1）沿轨道观测类型的四卫星Bender配置（两对飞行），2）沿跨轨道观测类型的三卫星GRAPEN（结合GRACE和摆锤形态）配置，3）四卫星车轮径向跟踪型的配置（两对飞行）。此外，还添加了GRACE任务方案作为参考“比较”任务。所有卫星的轨道都被认为是通过无阻力系统飞行的，但是，在模拟观测结果中增加了逼真的白噪声，以模拟与无阻力测量相关的误差。在重力场的光谱波长光谱中分析结果，直到球谐度为n = 100，并在地球地图上进行空间绘制。结果表明，三卫星GRAPEN星座除了经济投放低之外，还提供了相对于四卫星Bender和四卫星Cartwheel星座而言改进的重力场解决方案。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号