ADAPTIVE SIGNAL PARAMETER-ESTIMATION AND CLASSIFICATION TECHNIQUE

A new technique, adaptive signal parameter estimation and classification technique (ASPECT), is presented for use in both coherent and noncoherent signal environments. Unlike superresolution techniques employing spatial smoothing preprocessing schemes, ASPECT is not restricted to linear arrays. ASPECT is based on an adaptive rotation of an initial subspace up to the point at which the rotated subspace coincides with the true signal subspace. The number of incident signals together with information relating to their position, etc., is provided by the algorithm. Computer simulations in support of the theory are presented.