Sentinel-1 InSAR Coherence as an Indicator of Monitor Farming Activities

Huber, Manuel; Kumar, V.; Steele-Dunne, S.C.; Rommen, Bjorn

doi:10.1109/IGARSS52108.2023.10281522

Sentinel-1 InSAR Coherence as an Indicator of Monitor Farming Activities

Conference paper (2023)

Authors

Manuel Huber European Space Agency (ESA), University of the Federal Armed Forces Munich

V. Kumar Mathematical Geodesy and Positioning -

S.C. Steele-Dunne Mathematical Geodesy and Positioning -

Bjorn Rommen European Space Agency (ESA)

Research Group

Mathematical Geodesy and Positioning () (TU Delft)

DOI: https://doi.org/10.1109/IGARSS52108.2023.10281522

Agriculture Sentinel-1 Emergence Harvest ERA5 Catch Crop Interferometric Coherence Tillage

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Published Date

2023

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Geoscience and Remote Sensing

Research Group

Mathematical Geodesy and Positioning

Abstract

Reliable crop monitoring is paramount to achieve the objectives of the Common Agricultural Policy (CAP) and Food and Agriculture Organization. Synthetic Aperture Radar (SAR) provides high-resolution imaging and all-weather data acquisition capabilities for crop monitoring. This study investigates the sensitivity of parcel-level Sentinel-1 interferometric coherence to farming activities (e.g. planting, emergence, harvest and tillage) and weather events. A methodology to detect activities was developed and validated using ground-truth data from four crop types, collected over four years. The proposed approach was able to detect over 60% of all nine different farming activities. The results show that interferometric coherence is a reliable indicator for farming activities that can be considered as events resulting in a clear structural change (e.g. tillage 100%), but less reliable for gradual changes (e.g. Emergence 40%).

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