公开(公告)号：KR101456185B1

公开(公告)日：2014-10-31

申请号：KR1020130055960

申请日：2013-05-16

Applicant: 포항공과대학교 산학협력단

Inventor： 김경태 ,  박상홍

IPC: G01S13/89 ,  G06T5/00

Abstract: A spotlight synthetic aperture radar system (SAR) based on a range migration algorithm (RMA) and an autofocus technology are not appropriate because a point spread function (PSF) of a scatterer is spread in a squint mode. Therefore, two-dimensional interpolation is necessary to indicate PSF blurring in a vertical direction for improving the resolution of a vertical direction and for removing a side lobe which is spatially converted. The present specification proposes an effective two-dimensional interpolation technology including two one-dimensional interpolation steps in a sequint mode RMA because the existing two-dimensional interpolation requests a long calculation time and generates big calculation errors. Referring to a simulation result using measured turbulence data attached to the present specification, you can know that the resolution of the vertical direction is remarkably improved. In addition, you can know that the PSF is successfully focused with the reduction of the calculation time.

Abstract translation: 基于范围迁移算法（RMA）和自动对焦技术的聚光灯合成孔径雷达系统（SAR）是不合适的，因为散射体的点扩散函数（PSF）以斜视模式传播。 因此，为了提高垂直方向的分辨率和去除空间转换的旁瓣，需要二维插值来指示垂直方向上的PSF模糊。 本说明书提出了一种有效的二维插值技术，其包括后续模式RMA中的两个一维插值步骤，因为现有的二维插值需要较长的计算时间并产生大的计算误差。 参考使用本说明书附带的测量湍流数据的模拟结果，您可以知道垂直方向的分辨率显着提高。 此外，您可以知道PSF成功集中在减少计算时间。