一种GNSS定位结果质量评价指标

An Evaluation Indicator for the GNSS Positioning Quality

由于单一指标或将多种指标简单结合无法有效表征GNSS定位结果的质量,提出一种综合评价指标。该指标对观测数据质量指标、GNSS定位处理算法特征数据进行归一化处理,利用变异系数定权方法,将多种指标进行线性组合,所得到的新指标即为综合评价指标。新指标数值越小,表明结果质量越好。实测数据验证表明,新指标是一种有效的定位结果质量评价指标,可服务于工程实践,同时可为GNSS定位结果质量评估提供新思路。

Since a single indicator or a simple combination of several indicators that cannot effectively characterize the GNSS positioning quality,we propose a comprehensive evaluation indicator.This indicator normalizes the observation data quality indicators and GNSS positioning processing algorithm feature data,and uses the coefficient of variation weighting method to linearly combine several indicators.The new indicator is a comprehensive evaluation indicator,with smaller value indicating higher quality.The results show that the new indicator is an effective evaluation indicator for the positioning quality,which can be used in engineering practice and provide a new idea for the quality assessment of GNSS positioning.