An automated FFT-based technique is proposed for registration of remote sensing images having different spatial resolution and relative rotation and shift. The proposed method is an extension of the phase correlation technique. The main characteristic of the algorithm is to align two images automatically without requiring either control points or sensor′s parameters. Fourier scaling properties and rotational properties are used to find scale and rotational movement by log-polar coordinate transform. The phase correlation technique determines the translation movement. Experimental results show that satisfactory effect has been obtained by applying the (method.)