公开(公告)号：KR101273244B1

公开(公告)日：2013-06-11

申请号：KR1020110141430

申请日：2011-12-23

Applicant: 국방과학연구소

Inventor： 하종수 ,  박규철 ,  김동현 ,  남상호

IPC: G01S13/89

Abstract: PURPOSE: An image processing method and an apparatus thereof are provided to reduce coupling between a range direction variable and an azimuthal direction variable although the method is applied to a system requiring ultra wideband as a frequency band. CONSTITUTION: An image processing method includes the following steps of: generating dechirped data through the process of dechirping reflecting electromagnetic waves (S10); removing a phase component considering the distance between a target and an antenna from the dechirped data (S20); and processing a block signal about the data whose phase component is removed regarding a predetermined block area. The block signal process includes the following steps. The data is processed by Bulk RCMC (Range Cell Migration Correction) (S30). The data which is processed by the Bulk RCMC is converted from the distance-time domain to the distance-frequency domain (S40). The data in the distance-frequency domain is processed by azimuth deramping within a predetermined distance-frequency range (S50). CZT (Chirp ZTransform) is applied to the data processed by the azimuth deramping within a predetermined azimuth-frequency range (S60). [Reference numerals] (AA) Start; (BB) Start block process; (CC) Start AZIMUTH DERAMPING per each distance- frequency; (DD) Is it the end of distance-frequency ?; (EE,HH) No; (FF,JJ) Yes; (GG) Insert calculated result to each block; (II) Is this the end of block process?; (KK) End; (S10) Receive dechirped data; (S21) Distance direction FFT; (S22) Remove target phase distance; (S23) Distance direction IFFT; (S40) Determine distance direction FFT and the range of distance-frequency

Abstract translation: 目的：提供一种图像处理方法及其装置，以减少范围方向变量与方位角方向变量之间的耦合，尽管该方法应用于需要超宽带作为频带的系统。 构成：图像处理方法包括以下步骤：通过反射电磁波的去激励处理产生去信号数据（S10）; 从所述取消数据中去除考虑到目标和天线之间的距离的相位分量（S20）; 以及关于关于预定块区域去除其相位分量的数据的块信号。 块信号处理包括以下步骤。 数据由Bulk RCMC（范围单元迁移校正）处理（S30）。 由块RCMC处理的数据从距离时间域转换为距离 - 频域（S40）。 距离频域中的数据通过在预定距离频率范围内的方位角衰减进行处理（S50）。 CZT（啁啾ZTransform）被应用于在预定的方位角频率范围内由方位曳引处理的数据（S60）。 （附图标记）（AA）开始; （BB）开始块处理; （CC）每个距离频率启动AZIMUTH DERAMPING; （DD）是距离频率的结束吗？ （EE，HH）否; （FF，JJ）是的; （GG）将计算结果插入到每个块中; （二）这是块过程的结束吗？ （KK）结束; （S10）接收去信号数据; （S21）距离方向FFT; （S22）去除目标相位距离; （S23）距离方向IFFT; （S40）确定距离方向FFT和距离频率范围