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- 2017
系数矩阵误差对地壳应变参数反演的影响
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Abstract:
针对地壳应变参数反演模型中系数矩阵含随机和非随机元素及观测数据存在相关性等情况，以部分变量误差（partial-errors-in-variables，PEIV）模型为基础，采用了地壳应变参数反演的加权总体最小二乘算法，该算法不受系数矩阵和权矩阵结构的限制，能够快速、有效解决系数矩阵含有随机误差的模型问题。结合推导得到的最小二乘改正项公式，对地壳反演模型中坐标点误差对反演参数求解的影响进行了分析。通过对模拟数据和川滇地区的实际数据进行处理，得出系数矩阵误差对地壳应变参数反演的影响主要受GPS站点坐标值量级以及应变参数量级的牵制
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