基于温度变化的新型GNSS基准站钢标稳定性研究

随着我国城市群的快速发展,有越来越多的GNSS基准站选择建在城市建筑物的顶面上。针对这一现实,本文设计了一种新型GNSS基准站钢标,对比分析了钢标、混凝土标及加保温层钢标的材质特性。对其稳定性长、短期趋势的测试方法进行论述,并试验获得实测数据,数据解算表明这种新型GNSS钢标坐标重复性较好,能满足GNSS连续运行站建站技术要求,能有效地减弱外界温度对基准站水平方向的影响。

Stability analysis of new designed steel monument for GNSS reference station based on temperature changes

With the rapid development of China's City Groups,the GNSS reference stations are increasingly built on the top of buildings in a city.In response to this status,this paper designed a new steel monument for GNSS reference station,comparatively analyzed the characteristics of regular materials about steel pillar,concrete pillar and insulation's steel pillar,and discussed the testing methods on their long-and short-term stablity trends.A new GNSS steel pillar was tested,and the result showed that the pillar could meet the technical requirements of continuous operating GNSS station by higher precision,better coordinate repeatability,and also effectively weaken the outside temperature effect at the horizontal components.