SNR-Based GNSS-R for Coastal Sea-Level Altimetry

Geodetic Global Navigation Satellite System reflectometry (GNSS-R) uses ground-based signals of opportunity to retrieve sea levels at an intermediate spatial scale. GNSS-R is based on the simultaneous reception Line-of-Sight (LoS) and its coherent GNSS surface reflection (non-LOS) signals. The scope this paper present geodetic applied level altimetry. Signal-to-Noise Ratio (SNR) measurements from a Commercial Off-The-Shelf (COTS) geodetic-quality station Haiti Coast Guard Base in Port-au-Prince used International Terrestrial Reference Frame 2014 (ITRF2014). are compared with those OTT Radar Level Sensor (RLS) installed vertically below antenna. Root-Mean-Square Error (RMSE) between RLS records 3.43 cm, correlation 0.96. In addition, complex differences 15-min using Positioning (GPS) Globalnaya Navigazionnaya Sputnikovaya Sistema (or System; GLONASS) for all eight major tidal constituents mm-level agreement. Therefore, can be as complementary approach conventional method studies stable terrestrial reference frame.