张双成,王涛,王丽霞,张京江,刘宁,赵桂生

• 1:长安大学地质工程与测绘学院
• 2:北京城市气象研究院

摘要(Abstract)：

针对单颗卫星结果易跳变且无法有效表征土壤湿度时空尺度特征的问题,提出了一种多卫星赋权融合解译土壤湿度变化的算法。该方法无需额外观测值仅使用卫星直射和反射信号强度来确定权值,并通过实测GNSS数据进行了验证。研究结果表明,卫星赋权融合结果有效综合了不同卫星间的信息,提高了土壤湿度解译值与实测值间的一致性,BDS/GPS融合结果的相关系数分别达到了0.849和0.729,较单颗卫星的结果至少提升了15.51%和17.01%。因此,多卫星融合解译结果可作为土壤湿度实测值的更优估计,为简便且高效地监测土壤湿度提供了新手段。

关键词(KeyWords)： 全球导航卫星系统;信噪比;反射信号;土壤湿度;多卫星融合

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2019YFC1509802);; 陕西省自然科学基础研究计划项目(2020JM-227);; 国家自然科学基金项目(41104019)

作者(Author): 张双成,王涛,王丽霞,张京江,刘宁,赵桂生

DOI: 10.16251/j.cnki.1009-2307.2021.07.002

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