【摘要】 提出了基于单站成像系统获取多站逆合成孔径雷达(ISAR)重建图像的方法,称其为伪双站ISAR成像法.该方法利用电磁波的多径效应,发射一组电磁波信号可接收到多组回波数据,通过对回波进行信号处理,能够获得比常规单、双站ISAR成像更多的目标有用信息.与常规双站ISAR相比,它的设备大大简化,且避开了双站ISAR成像最难解决的同步技术问题.深入分析了伪双站ISAR成像的几何配置、成像原理、雷达成像平面和坐标变换等问题.仿真实验结果验证了理论分析的正确性和成像方法的有效性.更多还原

【Abstract】 This article proposes an image reconstruction method,called the pseudo bistation ISAR imaging technique,for multi-station inverse synthetic aperture radar(ISAR) based on a single station imaging system.With this method,more useful information about targets can be obtained than with conventional single or multi-station imaging,since multi-group echo data can be received after transmitting only one grouped electromagnetic wave signal when the returning signal is given special signal processing.Compared with conventional bistation ISAR,this method uses less complex equipment and avoids the most difficult problem in bistation ISAR imaging-synchronous technology.In this paper,geometric configurations,imaging principles,radar planar imaging,and coordinate transforms are analyzed.Simulation results show that the analysis is correct and this imaging algorithm is effective.更多还原