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| 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 |
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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.
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Received: 12 May 1998
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2000, Vol. 22 
