1. A spectral generator for radar comprising: a) a window generator for generating a window, said window defining a plurality of range-doppler cells; b) a covariance matrix calculator in communication with said window generator to for calculating a covariance matrix estimate for a range-doppler cell of interest in said window from pre-processed range-doppler-sensor data, wherein said covariance matrix estimate is obtained from covariance matrices calculated for at least a portion of said plurality of range-doppler cells within said window; and, c) a spectral calculator, in communication with said covariance matrix calculator, for calculating a high-resolution spectral vector based on a location matrix, and a noise subspace matrix estimate, said noise subspace matrix estimate being derived from said covariance matrix estimate.