Influence on Selection of Data Fusion Model to Overall Adjustment in Industrial Measurement

ZHOU Yueyin; PAN Guorong; WU Ting; WANG Dachao

doi:10.13203/j.whugis20150450

Volume 42 Issue 12

Dec. 2017

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Geomatics and Information Science of Wuhan University > 2017 > 42(12): 1840-1846. > DOI: 10.13203/j.whugis20150450

ZHOU Yueyin, PAN Guorong, WU Ting, WANG Dachao. Influence on Selection of Data Fusion Model to Overall Adjustment in Industrial Measurement[J]. Geomatics and Information Science of Wuhan University, 2017, 42(12): 1840-1846. DOI: 10.13203/j.whugis20150450

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Influence on Selection of Data Fusion Model to Overall Adjustment in Industrial Measurement

1.
College of Survey and Geo-informatics, Tongji Unviersity, Shanghai 200092, China
2.
Shanghai Research Institute of Building Sciences, Shanghai 200232, China

Funds:

The Fundamental Research Funds for the Central Universities

China Special Fund for Surveying, Mapping and Geoinformation Research in the Public Interest HY14122136

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Author Bio:
ZHOU Yueyin, PhD candidate, specializes in industrial measurement data fusion. E-mail: ag-yue@163.com
Corresponding author:
PAN Guorong, PhD, professor. E-mail: pgr2@163.com
Received Date: February 27, 2016
Published Date: December 04, 2017

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Abstract

Abstract

In industrial measurement, the coordinate measurement error of the traditional moving station measurement will accumulate constantly with the increase of number of stations, which leads to the uncontrollability of the measurement accuracy. Based on the original observations and the coordinate observations respectively, this paper proposes two methods of data fusion of the overall adjustment in which the point precision is both higher and more stable than the traditional moving station measurement. Experiments show that the fusion results won't be completely equivalent within different fusion methods even if the mathematical model and stochastic model are equivalent. In order to get more reliable accuracy of coordinates of unknown points, we should choose different fusion methods based on the specific situation in practical application.
- industrial measurement,
- moving station measurement,
- data fusion,
- overall adjustment,
- condition number

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