摘要
为了估计具有二阶平动的刚体目标的微动参数,提出一种基于短时三次相位函数(CPF)和逆Radon变换(IRT)的参数测量方法.基于典型旋转微动模型,推导并分析初步平动补偿后微动散射中心的瞬时频率率(IFR);采用短时三次相位函数得到雷达回波的时间-瞬时频率率二维平面;基于时间-瞬时频率率二维平面,利用逆Radon变换对正弦曲线的测量原理实现平动补偿的速度误差、加速度误差以及微动参数的测量.仿真结果验证了该方法的有效性.
In order to estimate the micro-motion parameters of rigid targets with second-order translation,aparameter measurement method based on short-time cubic phase function（CPF）and inverse Radon transform（IRT）was proposed.Based on the typical rotation micro-motion model,the instantaneous frequency rate（IFR）representation was first derived and analyzed after primary translation compensation.The short-time CPF was then used to obtain the twodimensional time-IFR plane of radar echoes.Finally,based on the two-dimensional time-IFR plane,the translation compensation velocity error,acceleration error and micro-motion parameters were measured by taking advantage of the sinusoid curve measuring principle based on IRT.The simulations validate the effectiveness of the proposed method.
作者
王才
徐成发
冯祺
高梅国
WANG Cai XU Cheng-fa FENG Qi GAO Mei-guo(School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2017年第3期318-324,共7页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金资助项目(61401024)
北京理工大学基础研究基金项目(20140542001)
关键词
微动
瞬时频率率
三次相位函数
逆Radon变换
micro-motion
instantaneous frequency rate
cubic phase function
inverse Radon transform
