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利用谱分析法估计GRACE Follow—On地球重力场的空间分辨率
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Journal Article
利用谱分析法估计GRACE Follow—On地球重力场的空间分辨率
2012
Overview
利用轨道扰动引力谱和大地水准面累计误差谱分析的方法估计未来GRACE（gravity recovery and climate experimenl）Follow—On卫星反演地球重力场的空间分辨率。基于GRACEFollow—On卫星的轨道特性，计算其在高空所受到的径向扰动引力，并根据谱特性及星载加速度计的测量噪声水平分析该卫星能反演重力场的阶数。利用EGM96重力场模型分别计算200km和250km轨道高度处的扰动引力谱。分析其特性表明：在两个轨道高度处分别能反演281阶和242阶的地球重力场模型。给出大地水准面累计误差谱模型，并计算200km和250km轨道高度处大地水准面累计误差谱。分析其谱特性表明：在两个轨道高度处分别能反演至286阶和228阶的地球重力场模型。
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