Significant Wave Height Estimation Using Multi-Satellite Observations from GNSS-R

Significant Wave Height Estimation Using Multi-Satellite Observations from GNSS-R

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This study proposes a significant wave height (SWH) retrieval method based claus porto bath soap on multi-satellite observations using Global Navigation Satellite System Reflectometry (GNSS-R).The algorithm obtains the signal-to-noise ratio (SNR) through delay-Doppler maps (DDMs) and introduces an offset correction that combines the differences between the elevation angles of multi-satellites.The correction improves the correlation between SNR and SWH and thus enables the estimation of SWH.The feasibility of the proposed algorithm was verified by experiments and a performance comparison with the traditional estimation method based on SNR.The estimation results of the proposed algorithm, with a mean absolute percentage error of 8.

26%, a root mean square error of 0.1671 m, and a maximum error of 0.32 m, better matched the true values than the traditional SNR-based method.The method is intended to improve the retrieval accuracy of SWH based on the beefeaters triple flavor twists GNSS-R technique, and to provide services for sea-state information monitoring and ship navigation.