Low complexity mixed space-time reconstruction of sea wave profiles from radar backscatter
AssigneeKabushiki Kaisha Toshiba
InventorMustafa Al-Ani
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Abstract
A method and system for deterministic sea wave profiling and/or prediction. Mixed space-time sampling data of the sea is obtained, where the sampling data is helical in time and space and comprises a plurality of beam waveforms. The sampling data is separated into a plurality of sub-sets of the sampling data, where each sub-set of the sampling data corresponds to a region of the sea. For each sub-set of the sampling data, a sub-set sea model is determined using a subsampled set of wavenumbers. Determining the sub-set sea model is based on the beam waveforms in the corresponding sub-set of the sampling data. The sub-set sea models are up-sampled and then combined to form a complete sea model.
Claims20
A method for deterministic sea wave profiling and/or prediction, the method comprising:
- obtaining mixed space-time sampling data of the sea, wherein the sampling data is helical in time and space and comprises a plurality of beam waveforms;
- separating the sampling data into a plurality of sub-sets of the sampling data, wherein each sub-set of the sampling data corresponds to a region of the sea;
- for each sub-set of the sampling data, determining a sub-set sea model, using a subsampled set of wavenumbers, based on the beam waveforms in the corresponding sub-set of the sampling data;
- up-sampling the sub-set sea models;
- and
- combining the up-sampled sub-set sea models to form a complete sea model.
A system for deterministic sea wave profiling and/or prediction using mixed space-time sampling data of the sea when the sampling data is helical in time and space and comprises a plurality of beam waveforms, the system comprising a processing system configured to:
- obtain the mixed space-time sampling data of the sea;
- separate the sampling data into a plurality of sub-sets of the sampling data, wherein each sub-set of the sampling data corresponds to a region of the sea;
- for each sub-set of the sampling data, determine a sub-set sea model, using a subsampled set of wavenumbers, based on the beam waveforms in the corresponding sub-set of the sampling data;
- up-sample the sub-set sea models;
- and
- combine the up-sampled sub-set sea models to form a complete sea model.
Dependencies are inferred from the claim text.