Affiliation of Author(s):电子信息工程学院
Journal:数据采集与处理
Key Words:合成孔径雷达;地面动目标指示;自聚焦;恒虚警检测;
Abstract:高分辨率合成孔径雷达(Synthetic aperture radar,SAR)合成孔径时间长导致动目标散焦严重、信杂噪比(Signal clutter noise ratio,SCNR)降低,增加了对动目标的检测难度。针对这种情况,本文提出了一种基于自聚焦的变门限SAR/(Ground moving target indication,GMTI)动目标检测算法。该算法利用距离相位误差和方位相位误差之间存在的固定关系实现对动目标的两维相位误差的估计与补偿,达到提高SCNR的目的。通过两级不同门限的恒虚警率(Constant false alarm rate,CFAR)检测分别实现动目标检测和排除虚警。实测数据结果表明,本文算法能有效地检测动目标,降低虚警概率。
Translation or Not:no
Date of Publication:2017-07-15
Co-author:陈格格,Di Wu,mxh
Correspondence Author:Daiyin Zhu
Professor
Alma Mater:南京航空航天大学
Education Level:南京航空航天大学
Degree:Doctoral Degree in Engineering
School/Department:College of Electronic and Information Engineering
Discipline:Communications and Information Systems. Communications and Information Systems. Signal and Information Processing
Business Address:电子信息工程学院318办公室
Contact Information:zhudy@nuaa.edu.cn, 025-84892410(Tel), 2843602904(qq)
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