ROTATIONAL MOTION COMPENSATION OF THE TARGET MOVING UNIFORMLY
Li Xi①;Liu Guosui①;Shan Rongguang②;Ni Jinlin②; Gu Hong①
①Dept. of Electro. Eng., Nanjing University of Science and Technology Nanjing 210094;②Nanjing Research Institute of Electronics & Technology Nanjing 210013
Abstract：After translational motion compensation, rotational motion compensation is needed in ISAR technique. This paper considers the rotational motion compensation in the case of that the target moves along a straight trajectory with constant speed. It is found out that the nonlinear factor γ is most important parameter in its rotational motion compensation. In order to estimate γ, image entropy minimization principle is described here. Based on this principle, the unknown γ can be estimated accurately. The effecttiveness of this method are shown by simulated and experimental results.
2000, Vol. 22 
