Abstract
A fundamental spectral domain model for moving point and distribution of scatterers is presented. The approach is accurate as the spherical phase front is rigorously treated throughout the Doppler analysis. Due to the analytic nature of the model in the range-Doppler plain, large squint-angle operations (e.g., SpotSAR) can be characterized. Furthermore, motion characteristics can be extracted in the subaperture level to better reflect the general motion (e.g., nonuniform). The range-Doppler model can serve as a tool for polarimetric and multichannel analysis.
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