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- W2065112971 abstract "In previous works on current measured by along-track interferometric synthetic aperture radar (ATISAR), the decorrelation function of an ocean-surface backscattering signal was usually assumed to be a real Gaussian function, i.e. the phase term was omitted. In this study, it is proved that the omission of the phase term included in the decorrelation function results in a significant estimation bias that can be modelled by a higher-order function of time lag and that the coefficients of this higher-order function can be expressed as a series of higher-order Doppler spectral moments. This model is validated by the scatterometer data obtained from an experimental wind-wave tank. The estimation bias especially needs to be considered for the ATISAR system with a long time lag. Simulation results show that if the time lag is equal to the coherence time, the estimation bias of the current can reach about 0.2 m s−1, which is not insignificant in high-precision current-retrieving applications. However, because mos..." @default.
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- W2065112971 date "2014-06-02" @default.
- W2065112971 modified "2023-09-24" @default.
- W2065112971 title "Estimation bias of ocean current measured by along-track interferometric synthetic aperture radar and its compensation methods" @default.
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- W2065112971 doi "https://doi.org/10.1080/01431161.2014.916055" @default.
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