| 信噪比检验法跟踪评估序贯平差质量研究 |
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| 引用本文： | 顾勇为,归庆明,隋立芬,郭建锋.信噪比检验法跟踪评估序贯平差质量研究[J].测绘科学,2010,35(5):54-55,38. |
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| 作者姓名： | 顾勇为 归庆明 隋立芬 郭建锋 |
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| 作者单位： | 信息工程大学测绘学院,郑州,450052;信息工程大学理学院,郑州,450001;信息工程大学理学院,郑州,450001;信息工程大学测绘学院,郑州,450052 |
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| 基金项目： | 国家自然科学基金项目，河南省基础与前沿技术研究计划项目，郑州市科技计划攻关项目 |
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| 摘 要： | 序贯平差有一套规律性很强的递推公式,易于编程实现且占用较小的内存,得到了广泛的实际应用。随着序贯进程的发展,观测信息不断丰富,使平差质量逐渐变好。本文对序贯平差质量跟踪检验问题进行了研究,提出了一种利用信噪比统计量,跟踪序贯平差过程评估中各待估参数估计质量的方法,并据此确定序贯平差进程的终止方式,在确保平差质量的同时有效地控制了计算的工作量。数值试验结果表明该方法合理有效,信噪比指标对序贯平差质量变化十分敏感。
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| 关 键 词： | 序贯平差 信噪比检验 复共线性 参数估计 质量跟踪 |
Study of quality tracing to sequential adjustment based on signal-to-noise ratio |
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| GU Yong-wei,GUI Qing-ming,SUI Li-fen,GUO Jian-feng.Study of quality tracing to sequential adjustment based on signal-to-noise ratio[J].Science of Surveying and Mapping,2010,35(5):54-55,38. |
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| Authors: | GU Yong-wei GUI Qing-ming SUI Li-fen GUO Jian-feng |
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| Abstract: | This paper gave a way to evaluate quality of adjustment result following tracks of sequential adjustment.With the help of signal-to-noise ratio estimation,a method was put forward to access quality of the parameter estimation during the process of sequential adjustment,and a termination to sequential process was obtained.It ensured the quality of adjustment result and reduced the amount of work.The result from numerical experiment showed that the method was valid,and the index of signal-to-noise ratio was sensitive to the quality change of sequential adjustment. |
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| Keywords: | sequential adjustment signal-to-noise ratio hypothesis test multicollinearity parameter estimation quality tracing |
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