Abstract
Global Navigation Satellite System reflectometry (GNSS-R) is a new remote sensing technique which can be used to measure a wide range of geophysical parameters. GNSS-R makes use of the simultaneous reception of the direct transmission and the coherent surface reflections of GNSS signal with either a single antenna or two separate antennas. This paper presents a snow depth estimation method using pseudorange and carrier-phase combination of BDS (BeiDou Navigation Satellite System) dual-frequency (B1 and B2) signals. The proposed method is geometry free and is not affected by ionospheric delays. The GNSS receiver of Trimble R9 was used to collect BDS satellite signals in a ground-based experimental campaign recently conducted in Harbin, Heilongjiang Province, China. The GNSS data recorded during the experimental campaign were used to test the proposed method. The results demonstrate that there exists good agreement between the proposed method and the ground-truth measurements.
Published Version
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