摘要
利用双谱分析方法,用非高斯AR模型对雷达目标回波信号进行参数化双谱估计,并在此基础上对数据进行外推处理,然后对数据进行ISAR成像。仿真和实测数据实验表明,本文的处理方法比传统的ISAR成像分辨力有明显的提高,且运算量不大,满足ISAR的实时或者准实时成像要求。
In this paper, bi-spectrum estimation method is adopted. Based on non-Gaussian AR-model, parametric bi-spectrum method is used to extrapolate radar echo signal; then the ISAR imaging has been done. Simulation and real data experiment result show that the method adopted in this paper dramatically improves the ISAR imaging resolution as compared with the traditional FFT method. Furthermore, less calculation is able to meet the needs of real-time or half-real-time ISAR imaging.
出处
《计测技术》
2005年第2期5-7,共3页
Metrology & Measurement Technology
基金
国家"八六三"高技术项目
(2002AA731200)
关键词
超分辨
ISAR成像
双谱估计
AR模型
super-resolution
ISAR imaging
bi-spectrum estimation
AR-model
