摘要
本文提出和研究了以散射功率质心为基准的逆合成孔径雷达(ISAR)成象的运动补偿方法——参考质心法。分析了参考质心法与相关法的内在联系和区别;讨论了噪声对补偿的影响,提出了用回波数据拟合曲线来光滑质心距离轨迹和相位轨迹的方法。最后通过对ISAR外场数据和微波暗室数据成象的运动补偿验证了上述理论和方法,得到了满意的效果。
The motion compensation for ISAR imaging using scattering centroid (called reference centroid method) is proposed and studied. The internal relations and differences between correlation method and the new method are analyzed. The noise effect on the motion compensation is discussed. To solve the problem, a new method' which uses echo goodness-of-fit curve to smooth the centroid range trace and phase trace is proposed. The reference centroid method is used to process the simulative and real ISAR data of moving target, and the satisfying motion compensation results are obtained. The results show that the method is correct and effective.
