摘要
针对星载SAR ATI处理的中间结果,提出了一种称为"两步-类高斯拟合"完全自适应的检测方法。该方法可以完全自动地实现杂波和噪声中的运动目标检测,避免了传统方法作联合高斯数据的假定,无须推导SAR ATI干涉图的理论概率密度函数。此外,该方法还可以大大降低系统的虚警概率并用仿真研究了最小可检测速度。
A fully automatic detector named ＂Two Step Fitting Gaussian Function＂ aims at processing the output signals from spaceborne synthelic aperture radar （SAR）-along track interferometry （ATI） is proposed. Without the need to assume jointly Gaussian distributed data and derive a theoretical PDF for the interferogram, the new adaptive detection scheme automatically extracts moving targets from stationary clutter and noises. By this method the probability of false alarm Pfa is greatly reduced and the minimum detectable velocity （MDV） is investigated.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2005年第1期84-89,共6页
Acta Aeronautica et Astronautica Sinica
关键词
合成孔径雷达
沿航迹向干涉
地面运动目标指示
最小可检测速度
虚警概率
synthetic aperture radar
along track interferometry
ground moving target indication
minimum detectable velocity
probability of false alarm
