GNSS-R sea surface height measurement method based on novel beam stacking method

By adopting a new stacking beam method in the GNSS-R sea surface height measurement technology, the GNSS-R beam signals of multiple GNSS satellites are synthesized, which solves the problems of weak reflected signals and low signal-to-noise ratio, significantly improves the uncertainty of the altitude measurement and improves the performance of the altitude measurement.

CN119758396APending Publication Date: 2025-04-04HARBIN INST OF TECH AT WEIHAI
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Patent Information

Application Number
CN202411803596.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

In the existing GNSS-R sea surface height measurement technology, the reflected signal is weak and the signal-to-noise ratio is low, resulting in high uncertainty in the altitude measurement, which is difficult to meet the needs of high-precision marine physics models.

Method used

The GNSS-R sea surface alveolar measurement method based on the new stacking beam method is adopted to synthesize multiple GNSS-R beam signals from multiple GNSS satellites to improve the signal-to-noise ratio of the reflected signals received by the GNSS-R satellite. The specific steps include receiving and processing reflected signals from multiple satellites, synthesizing and superimposing signals using beamforming technology, and analyzing the superimposed signals to obtain sea surface altitude information.

Benefits of technology

By increasing the signal-to-noise ratio, the uncertainty of GNSS-R sea surface altitude measurement is significantly improved, and the measurement performance is improved, so that the accuracy of sea surface altitude data reaches 2.27m, which is 0.33m higher than the traditional single beam method.

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Abstract

The invention relates to the technical field of electronic signal processing and satellite height measurement, in particular to a GNSS-R (Global Navigation Satellite System-Receiver) sea surface height measurement method based on a novel stacked beam method, which can obviously improve the measurement precision, and is characterized in that a plurality of GNSS-R beam signals corresponding to a plurality of GNSS satellites are synthesized through the novel stacked beam method; the method is used for improving the signal-to-noise ratio of reflected signals received by GNSS-R satellites, and comprises the following steps: step 1, receiving and processing the reflected signals from a plurality of satellites; 2, synthesizing and superposing the received signals by using a beam forming technology; and step 3, analyzing the superposed signal to obtain sea surface height information.
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