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基于瞬时频率率的平动刚体目标微动参数测量
引用本文:王才,徐成发,冯祺,高梅国.基于瞬时频率率的平动刚体目标微动参数测量[J].北京理工大学学报,2017,37(3):318-324.
作者姓名:王才  徐成发  冯祺  高梅国
作者单位:北京理工大学信息与电子学院,北京,100081;北京理工大学信息与电子学院,北京,100081;北京理工大学信息与电子学院,北京,100081;北京理工大学信息与电子学院,北京,100081
基金项目: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)
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。 

关 键 词:微动  瞬时频率率  三次相位函数  逆Radon变换
收稿时间:2015/12/31 0:00:00

Micro-Motion Parameter Measurement of Rigid Targets with Translation Based on Instantaneous Frequency Rate
WANG Cai,XU Cheng-f,FENG Qi and GAO Mei-guo.Micro-Motion Parameter Measurement of Rigid Targets with Translation Based on Instantaneous Frequency Rate[J].Journal of Beijing Institute of Technology(Natural Science Edition),2017,37(3):318-324.
Authors:WANG Cai  XU Cheng-f  FENG Qi and GAO Mei-guo
Affiliation:School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China
Abstract:In order to estimate the micro-motion parameters of rigid targets with second-order translation, a parameter 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 two-dimensional 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.
Keywords:micro-motion  instantaneous frequency rate  cubic phase function  inverse Radon transform
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