先验形变约束的实时动态载波相位差分变形监测Real-time kinematic deformation monitoring with prior deformation constraint
张绍成,殷飞,明祖涛,李玮
摘要(Abstract)：
针对实时动态载波相位差分(RTK)技术在动态监测中的应用需求,该文采用将监测点形变特点的先验信息作为约束条件的方法,减小模糊度搜索空间,提高模糊度固定率和计算效率。以某4.4 km的实测基线24 h GNSS观测数据测试显示,相比无约束条件解算模式,施加高程和平面约束后单历元整周模糊度解算成功率由原来的93.4%提升至96.6%和97.7%,高程和平面约束方向精度也分别收敛至0.6 cm和0.4 cm以内,且模糊度搜索计算效率也得到了明显提升。结果表明,本文算法具有很好的准确性和可靠性,在具有先验动态特征的变形监测中具备较高的应用价值。
关键词(KeyWords)： 变形监测;单历元解算;GNSS;整周模糊度解算
基金项目(Foundation): 国家自然科学青年基金项目(41804033,41504023)
作者(Author): 张绍成,殷飞,明祖涛,李玮
DOI: 10.16251/j.cnki.1009-2307.2020.11.002
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