Scholarlink

<p>GNSS-Interferometric Reflectometry technique normally uses Medium Earth Orbiting (MEO) satellites as they appear to travel slowly across the sky relative to a stationary observer on ground. In this work, we propose a novel method of GNSS-IR using a geostationary satellite by steadily changing the antenna height at small known steps, thereby producing the required interference pattern. The phase of this interference pattern is a function of the volumetric soil moisture. Our simulation results show a 6.5° phase change corresponding to a 10% change in volumetric soil moisture (VSM). The method has been verified experimentally using receptions from a NavIC geostationary satellite. Running the experiment over an extended period of a few months established the linear relationship between the phase of the interference pattern and the volumetric soil moisture, having a slope of 7.1° per 10% change in VSM.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A New Technique for Volumetric Soil Moisture Evaluation Using Geostationary Satellite

  • 期刊论文

  • 发表日期：

    2025年5月21日

查看全文
  • C. D. Raisy,
  • Sharda Vashisth,
  • Amitava Sen Gupta

摘要

GNSS-Interferometric Reflectometry technique normally uses Medium Earth Orbiting (MEO) satellites as they appear to travel slowly across the sky relative to a stationary observer on ground. In this work, we propose a novel method of GNSS-IR using a geostationary satellite by steadily changing the antenna height at small known steps, thereby producing the required interference pattern. The phase of this interference pattern is a function of the volumetric soil moisture. Our simulation results show a 6.5° phase change corresponding to a 10% change in volumetric soil moisture (VSM). The method has been verified experimentally using receptions from a NavIC geostationary satellite. Running the experiment over an extended period of a few months established the linear relationship between the phase of the interference pattern and the volumetric soil moisture, having a slope of 7.1° per 10% change in VSM.