Subjects: Geosciences >> Space Physics submitted time 2016-05-13
Abstract： In absolute altimeter calibration campaigns,the Sea Surface Height(SSH)series derived from the in-situ Differential GPS(DGPS)buoys always include high frequency errors such as wind waves and instrumental noises. The former can be removed by low pass filters,while the latter can not,because the noises are white and can spread in the whole frequency band of interest.In this paper,the Singular Spectrum Analysis(SSA)method was applied to solve the problem,and select criteria of the embedding dimension and intercepting length.Simulations based on this innovative method were executed,the effectiveness in removing the instrumental noise and the selction criteria was validated.Finally,SSH series derived from an in-situ DGPS buoy experiment were processed by this method,and the study suggested that the processed series were smoother compared to the original series,and had some improvements in accuracy.Therefore,the validity of the SSA method was demonstrated.
Peer Review Status:
Awaiting Review
Subjects: Geosciences >> Space Physics submitted time 2016-05-13
Abstract： A flight experiment is an important experimental step that needs to be conducted in the prelaunch for Chinese-French Oceanic SATellite(CFOSAT).Functionally,performance and data validation of spaceborne scatterometer should be verified to ensure in-orbit work status.In this flight experiment,return signal simulator is used to conduct ground-based system testing and calibration for CFOSAT,which proposes a method to use return signal simulator for spaceborne scatterometer system calibration.This method is helpful to ground-based calibration experiments for CFOSAT.Return signal simulator could provide a known echo signal.The results in flight experiments verify the feasibility and accuracy by return signal simulator to conduct the ground-based calibration for spaceborne scatterometer.
Peer Review Status:Awaiting Review
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