1. 南京信息工程大学遥感与测绘工程学院
2. 中国科学院上海天文台天文地球动力学研究中心
纸质出版:2024
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宋少辉, 吴学睿, 赵乐文. 基于GPS-IR的复杂寒区地表冻融状态监测研究[J]. 地理空间信息, 2024,22(4):65-70.
宋少辉, 吴学睿, 赵乐文. 基于GPS-IR的复杂寒区地表冻融状态监测研究[J]. 2024, 22(4): 65-70.
针对复杂寒区地表冻融状态情况,基于GPS-IR (Global Positioning System-Interference Reflectometry)技术进行地表冻融状态监测精度研究。采用2017—2022年PBO (The Plate Boundary Observatory) GPS站点数据,结合SNOTEL气象站地表实测数据,充分考虑了复杂寒区地表积雪深度、土壤湿度和地表冻融状态对GPS (Global Positioning System)多路径观测值的影响,基于GPS-IR技术利用卫星反射信号来进行地表冻融状态监测。结果表明:在积雪深度和土壤湿度时间序列平稳的状态下,GPS-IR技术的冻融监测精度为90.63%,积雪深度和土壤湿度的波动都会导致监测精度下降。实验表明GPS-IR技术的监测精度会受到积雪深度和土壤湿度的影响,在地球物理参数小范围变化的情况下监测精度较好,对地表冻融状态响应敏感,是一种有效监测复杂寒区冻融特性的有效手段。
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