Removing cross-track interferometric phase in the along-track interferometry method for sea surface current inversion

ABSTRACT

This study quantitatively analyzes how cross-track phase interference affects sea surface current inversion accuracy in ATI. It then suggests a calculation method for this phase over the ocean, enhancing ATI accuracy: RMSE 0.037 m/s using HYCOM data, 0.023 m/s with Himawari, compared to average buoy velocity of 0.131 m/s.

KEYWORDS:

• Sea surface current
• along-track interferometric phase
• cross-track interferometric phase

Acknowledgments

Thank you to the Chinese People’s Liberation Army Unit 61618 for providing TH-2 data.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (No. 62031005).