时间相关观测的几种动态数据处理方法

P207; 现代大地测量数据中往往存在时间相关性,忽略观测值时间相关性会影响参数估值的精度和可靠性.因此,本文研究了几种时间相关观测的动态数据处理方法.首先,对观测值时间相关性的处理方法进行了扩展和统一.利用极大验后估计原理,提出了第3种思路,并在无历元公用参数和有历元公用参数两类模型下,详细推导了去相关变换法、差分变换法和极大验后估计法这3种思路的动态解,并对它们的特点和等价性进行了论证.其次,为了平衡实际应用中的解算效率且同时有效顾及时间相关性,利用自相关函数表达时间相关性,导出了相应退化形式.最后,通过GPS实测数据验证了本文理论公式的正确性和实用性....

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Bibliographic Details
Published in测绘学报 Vol. 47; no. 12; pp. 1563 - 1570
Main Authors 李博峰, 章浙涛
Format Journal Article
LanguageChinese
Published 同济大学测绘与地理信息学院,上海,200092 01.12.2018
Subjects
动态解
极大验后估计
去相关变换
时间相关
差分变换
Online AccessGet full text
ISSN1001-1595
DOI10.11947/j.AGCS.2018.20180192

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Abstract P207; 现代大地测量数据中往往存在时间相关性,忽略观测值时间相关性会影响参数估值的精度和可靠性.因此,本文研究了几种时间相关观测的动态数据处理方法.首先,对观测值时间相关性的处理方法进行了扩展和统一.利用极大验后估计原理,提出了第3种思路,并在无历元公用参数和有历元公用参数两类模型下,详细推导了去相关变换法、差分变换法和极大验后估计法这3种思路的动态解,并对它们的特点和等价性进行了论证.其次,为了平衡实际应用中的解算效率且同时有效顾及时间相关性,利用自相关函数表达时间相关性,导出了相应退化形式.最后,通过GPS实测数据验证了本文理论公式的正确性和实用性.
AbstractList P207; 现代大地测量数据中往往存在时间相关性,忽略观测值时间相关性会影响参数估值的精度和可靠性.因此,本文研究了几种时间相关观测的动态数据处理方法.首先,对观测值时间相关性的处理方法进行了扩展和统一.利用极大验后估计原理,提出了第3种思路,并在无历元公用参数和有历元公用参数两类模型下,详细推导了去相关变换法、差分变换法和极大验后估计法这3种思路的动态解,并对它们的特点和等价性进行了论证.其次,为了平衡实际应用中的解算效率且同时有效顾及时间相关性,利用自相关函数表达时间相关性,导出了相应退化形式.最后,通过GPS实测数据验证了本文理论公式的正确性和实用性.
Author 章浙涛
李博峰
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极大验后估计
去相关变换
时间相关
差分变换
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Title 时间相关观测的几种动态数据处理方法
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