首页>
外国专利>
ISAR A Method of ISAR rotational motion compensation for highly focused ISAR images
ISAR A Method of ISAR rotational motion compensation for highly focused ISAR images
展开▼
机译：ISAR一种高聚焦ISAR图像的ISAR旋转运动补偿方法。
展开▼
页面导航
摘要
著录项
相似文献
摘要
The target rotational motion compensation method for forming a high-quality ISAR image of the present invention is performed by estimating a phase of a signal in a specific range bin and then performing interpolation based on the estimated phase. Specifically, a range bin in which one scattering source exists is selected. Then, estimating the phase function in the selected range bin by using the Fourier transform and the polynomial-phase transform enables estimation of an accurate phase function within a fast calculation time. Next, a new time variable for keeping the rate of change of the observation angle constant is calculated based on the estimated polynomial phase function, and then a radar signal for the newly calculated time variable is obtained by interpolation. This makes it possible to perform rotational motion compensation that enables a functioner to form a high-quality ISAR image in real time in an ISAR image formation scenario in which the rate of change of the viewing angle is not constant.
展开▼
