Minimizing Sum of Image Amplitudes Autofocus Algorithm
图像幅度和值最小化自聚焦算法

High resolution Synthetic Aperture Radar (SAR) imaging requires that the azimuth frequency modulation rate is accurately estimated. A new autofocus algorithm is presented which minimizing sum of amplitudes in this paper. This paper analyses the relationship between the image contrast function and the sum of amplitudes, when the matched function's amplitude in azimuth direction is invariable. Based on the relationship between the image contrast function and the focus degree of the image, the minimizing sum o...