Patent ID: 7990311

Claim:
A method, comprising: obtaining a time sequence of raw radar data for a region of space; subdividing the raw radar data into a plurality of processing frames; for a processing frame, subdividing the processing frame into a plurality of processing cells and iteratively processing the processing cells of a processing frame by selecting a single processing cell for processing; transforming the radar data of the processing cell to form transformed radar data; performing a Fourier transform to convert the transformed radar data from the time domain to the Fourier domain (FD) to form FD radar data; converting the FD radar data to a FD Power Spectrum Density (FDPSD); smoothing the FDPSD; thresholding the FDPSD based upon a threshold parameter; estimating the speckle clutter noise power for the processing cell; estimating the local non-speckle clutter for the processing cell; removing the local non-speckle clutter from the processing cell in the Fourier domain to form filtered FD radar data; and performing an inverse Fourier transform to convert the filtered FD radar data back to the time domain.