| 基于TOPSIS的GNSS数据质量评估方法研究 |
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| 引用本文： | 魏勇,李建文,郭亮亮,魏来.基于TOPSIS的GNSS数据质量评估方法研究[J].大地测量与地球动力学,2016,36(10):892-896. |
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| 作者姓名： | 魏勇 李建文 郭亮亮 魏来 |
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| 摘 要： | 在当前数据质量评估指标（多路径效应、数据完整率、周跳以及信噪比等）基础上增加数据有效率指标，首次提出利用多指标综合评价方法对全球iGMAS、MGEX、IGS等观测站的GPS数据进行数据质量分析，建立了TOPSIS综合评价模型，并将该模型综合评价结果与各指标进行Pearson相关分析，综合评价结果与数据完整率和数据有效率指标呈强相关；并采用静态PPP结果与该综合评价结果进行相关分析，亦呈显著相关。
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| 关 键 词： | 数据质量 TOPSIS 相关分析 多指标综合评价 |
Research on GNSS Data Quality Evaluation Based on TOPSIS |
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| WEI Yong,LI Jianwen,GUO Liangliang,WEI Lai.Research on GNSS Data Quality Evaluation Based on TOPSIS[J].Journal of Geodesy and Geodynamics,2016,36(10):892-896. |
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| Authors: | WEI Yong LI Jianwen GUO Liangliang WEI Lai |
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| Abstract: | Currently GNSS observation data for quality evaluation is based on multipath, data integrity, cycle slips and SNR. In this paper, the factor of data efficiency is increased to assess data quality. The method of multi-index comprehensive evaluation firstly proposed is applied to evaluate GPS data quality based on GPS observations from iGMAS, MGEX and IGS. A comprehensive evaluation model is developed based on TOPSIS. Pearson correlation analysis is conducted between the results of the comprehensive evaluation model and various data quality indicators, showing that a strong correlation exists between the results of comprehensive evaluation and data integrity as well as data efficiency. The results of correlation analysis between static PPP results and the comprehensive evaluation show a significant correlation. |
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| Keywords: | data quality TOPSIS correlation analysis multi-index comprehensive evaluation |
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