摘要
该成像算法通过脉压生成一维距离像,虚拟合成孔径实现方位维高分辨,逆散射方法求解散射中心方位分布合成阵列接收信号,对同一距离单元内不同方位的散射点进行多普勒域分离生成距离-方位多普勒像,再通过单脉冲方位测角得到距离-方位像;应用ISAR成像在俯仰维生成距离-俯仰多普勒像,再通过单脉冲俯仰测角得到距离-俯仰像,最后合成三维像。经仿真及试验验证,该方法实时性强,成像精度高。
In this algorithm the high range resolution is obtained by pulse compression.In azimuth direction the scatter centre distribution is estimated by inverse scattering method,and then the receiving signal of the virtual line antenna array is obtained.High azimuth resolution can be obtained through processing this receiving signal by FFT and high elevation resolution can also be obtained by using FFT according to ISAR theory.Combining range-azimuth image and range-elevation image the three dimensional image can be obtained then.The algorithm presented is approved to be effective through both simulations and experiments.
作者
李小雷
蔡雨
袁军
刘平安
王力
刘颖
LI Xiaolei;CAI Yu;YUAN Jun;LIU Ping’an;WANG Li;LIU Ying(Xi’an Modern Control Technology Research Institute,Xi’an 710065,China;Advanced Manufacture Technology Center of China Academy of Machinery Science Technology,Beijing 100083,China)
出处
《弹箭与制导学报》
北大核心
2019年第3期125-129,共5页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
毫米波雷达
合成孔径
前视三维成像
millimeter wave radar
SAR
forward-looking three-dimensional imaging
作者简介
第一作者:李小雷(1987-),男,河北人,工程师,硕士,研究方向:毫米波精确制导、毫米波雷达目标自动识别技术。
