基于双站ISAR联合观测的进动锥体目标三维成像方法OA

To achieve the imaging and identification of the warheads in the midcourse phase of ballistic mis-siles,a method is proposed for precession feature extraction and three-dimensional imaging of space cone-shaped targets based on the joint observation of dual-station inverse synthetic aperture radar(ISAR).Firstly,two radars are used to obtain the slow time range profiles of the target at different angles and establish the relationship be-tween the sine curve and the precession features in the range profile.Then,the sine parameters are estimated through the inverse Radon transform and the precession features of the target are calculated.The integral path of the generalized Radon transform is determined to achieve three-dimensional imaging of the target.Finally,simula-tions are conducted to verify the effectiveness of the method.The experimental results show that the method pro-posed in the paper efficiently achieves accurate estimation of the target precession parameters under the condition of limited radar resources and obtains focused three-dimensional imaging of the target.