Remote Sensing of Soil Moisture Using the Propagation of Loran-C Navigation Signals
Remote Sensing of Soil Moisture Using the Propagation of Loran-C Navigation Signals
复制标题
DOI：
10.1109/lgrs.2014.2332055
复制
发表时间：
2015-01-01
影响因子：
4.8
通讯作者：
Astin, Ivan
中科院分区：
文献类型：
--
作者：
Feng, Yi;Astin, Ivan
土壤含水量在地球与其水文循环之间的复杂相互作用中起着核心作用。然而，获得大面积土壤湿度的连续测量是困难的。在我们的研究中，一种新的方法进行遥感土壤水分的探索，利用罗兰-C表面波的时间延迟的变化。使用在英国巴斯巴斯大学三周内记录的此类信号进行分析，来自法国北方的罗兰C发射站欧洲中期天气预报中心（ECMWF）的模式数据用于计算，校准和相互比较。在0-28 cm土壤深度范围内，罗兰C法估算的土壤湿度与ECMWF产品之间存在合理的对应关系。
The fractional water content of soil plays a central role in the complex interactions between the Earth and its hydrological cycle. However, obtaining continuous measurements of wide-area soil moisture is difficult. In our study, a novel method for the remote sensing of soil moisture is explored that makes use of the variations in time delay on Loran-C surface waves. An analysis was carried out using such signals recorded over a three-week period at the University of Bath, Bath, U.K., from a Loran-C transmitting station in Northern France. Model data from the European Centre for Medium-Range Weather Forecasts (ECMWF) were used for calculation, calibration, and intercomparison. Reasonable correspondence between the soil moisture estimated using the Loran-C method and the ECMWF product was found for a soil depth of 0-28 cm.