GNSS-R Data

GNSS-R Data for the paper: First Shipborne GNSS-R Ultra-long Observation Utilizing Oceangoing Freighter

The study of shipborne Global Navigation Satellite System Reflectometry (GNSS-R) holds immense significance for understanding the maritime navigation environment. However, in comparison to the more advanced satellite-based or land-based GNSS reflected signal sea surface detection technologies, shipborne platforms encounter more limitations and interferences, which have impeded the advancement of related research. This paper draws on data from the first ultra-long observation experiment using shipborne GNSS-R, conducted from April to May 2023 across the North Pacific. It focuses on analyzing how satellite incidence and azimuth angles affect the characteristics of reflection signals in the Delay Doppler Map. The findings suggest that at incidence angles between 40° and 50°, the reflected signals achieve a higher signal-to-noise ratio and contain richer reflection information. Moreover, varying satellite azimuth angles reveal two distinct peak intervals for forward and backward reflections.