High-Resolution Soil Moisture Retrieval Using C-Band Radar Sentinel-1 and Cosmic-ray Neutron Sensor Data

Hami Said, Modou Mbaye, Lee Kheng Heng, Georg Weltin, Trenton Franz, Gerd Dercon, Arsenio Toloza, Peter Strauss, Gerhard Rab

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Agricultural water management is key for a sustainable agricultural productivity. Accurate soil moisture measurements are essential in irrigation management, hydrological modelling, ground water recharge, flood, and drought forecasting. There are many different techniques for estimating soil moisture at different scales, from point to landscape scales. In this paper, we used a modified version of change detection approach for near surface soil moisture modelling coupled with a Cosmic-Ray Neutron Sensor (CRNS) installed at a field site 100 km outside Vienna, Austria. The model allows a conversion of Vertical-Vertical (VV) polarization into soil moisture. The model is calibrated with 2019 CRNS data and validated with data from 2020 to 2021. The results showed the good performance of the model with a high correlation for the calibration (R2 = 0.81) and predicted the soil moisture with an absolute error of 0.2%. This study is a major step in the monitoring of soil moisture at high spatial and temporal resolution by combining remote sensing and the CRNS based nuclear technology.

Original languageEnglish (US)
Title of host publication2021 IEEE International Workshop on Metrology for Agriculture and Forestry, MetroAgriFor 2021 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages221-225
Number of pages5
ISBN (Electronic)9781665405331
DOIs
StatePublished - 2021
Externally publishedYes
Event3rd IEEE International Workshop on Metrology for Agriculture and Forestry, MetroAgriFor 2021 - Virtual, Online, Italy
Duration: Nov 3 2021Nov 5 2021

Publication series

Name2021 IEEE International Workshop on Metrology for Agriculture and Forestry, MetroAgriFor 2021 - Proceedings

Conference

Conference3rd IEEE International Workshop on Metrology for Agriculture and Forestry, MetroAgriFor 2021
Country/TerritoryItaly
CityVirtual, Online
Period11/3/2111/5/21

Keywords

  • Agricultural water management
  • C-Band SAR Sentinel-1
  • Cosmic-Ray Neutron Sensor
  • Remote sensing

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Forestry
  • Instrumentation

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