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- 2016
GB-SAR构建永久散射体网改正气象扰动方法
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Abstract:
气象扰动对地基合成孔径雷达干涉测量技术的测量精度影响较大，选取合适的气象改正方法关系到测量结果的精度和可靠性。分析了常用的地基合成孔径雷达气象改正模型及方法，提出了一种利用永久散射体（permanent scatterers, PS）气象改正网的全场景气象改正方法，并将该技术应用到施工期的高危边坡监测实验中。结果表明，该方法可有效削弱气象影响，提高测量精度，准确探测出高危边坡中的不稳定区域。通过与传统选点气象改正的改正结果和测量机器人测量结果的比较分析，证明该方法可有效应用于高危边坡变形监测中，在复杂环境下气象影响可控制在亚mm级
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