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针对目前高精度测速系统布站情况,提出了一种基于测站数据组合的目标参数计算方法,以几何因子(GDOP)为度量标准,建立了布站情况分析的数学模型。通过目标至主站和各副站的夹角情况,构造最小、最大评价函数,同时根据基线情况,建立评价原则,分析其布站对目标参数精度的影响。研究结果可为实时数据的可靠性分析及外测事后数据处理精度分析提供技术支持。
Aiming at the current situation of high precision speed measurement system, a method of target parameter calculation based on the combination of station data was proposed. Based on the geometrical parameters (GDOP), a mathematical model of station distribution was established. The minimum and maximum evaluation functions are constructed based on the angle between the target and the primary station and the secondary stations. At the same time, the evaluation principle is established according to the baseline conditions, and the influence of the distribution station on the accuracy of the target parameters is analyzed. The research results can provide technical support for the reliability analysis of real-time data and the precision analysis of post-processing data processing.