Estimating ocean-scene coherence-time with a multi-aperture SAR

It is shown how to estimate decorrelation time using a multiple aperture SAR (synthetic aperture radar) and an AR (autoregressive) model. The experimental order-p autoregressive or AR (p) results presented here for averaged tau /sub D/ (characteristic decorrelation time) suggest that the ocean reflectivity may be modeled as an AR process. The experimental results show decorrelation times slightly larger than those inferred from the SAXON data, which is most likely due to the imposition of wide sense stationarity.<>