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逆合成孔径雷达(ISAR)作为成像雷达技术之一,它是应用雷达波束对基于遥感目标的二维像进行观测。ISAR对相继像的观察就类似于采用摄像机捕捉移动的画面。在光学成像的领域里,将图像而成的二维速度变换称为“光速流”或者是“速度场”。当摄像机与目标之间的相对运动是已知的时候,那么基于速度场的以相继运动图像来估计目标的三维形态是合理的。
Inverse Synthetic Aperture Radar (ISAR) is one of the imaging radar technologies. It uses radar beams to observe two-dimensional images based on remote sensing targets. ISAR’s observation of successive images is similar to capturing a moving image with a camera. In the field of optical imaging, the two-dimensional image of the speed of the transformation is called “speed of light ” or “velocity field ”. When the relative motion between the camera and the target is known, then based on the velocity field, it is reasonable to estimate the three-dimensional shape of the target with successively moving images.