Interactive comment on “Use of GNSS SNR data to retrieve soil moisture and vegetation variables
نویسنده
چکیده
This paper presents a case study applying GNSS signals, which were reflected on the ground surface (soil, vegetation surface) to derive soil moisture and vegetation height data over a wheat crop field. The GPS antenna was installed at a height of 2.51 m. Soil moisture was retrieved as long as the vegetation height was lower than ∼20 cm. However, with a further increase in plant height, it was not possible to retrieve soil moisture. Reaching a certain plant height, it was then possible to retrieve the vegetation height from the GNSS signals.
منابع مشابه
Use of GNSS SNR data to retrieve soil moisture and vegetation variables over a wheat crop
This work aims to estimate soil moisture and vegetation characteristics from Global Navigation Satellite System (GNSS) Signal to Noise Ratio (SNR) data using direct and reflected signals by the land surface surrounding a ground-based antenna. Observations are collected over a rainfed wheat field in southwestern France. The retrievals are compared with two independent reference datasets: in situ...
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