雷达学报Issue(3)：232-237,6.DOI:10.3724/SP.J.1300.2012.20048
基于二维映射的LFM UWB雷达动目标速度估计
Velocity Estimation of Moving Target Based on Two-dimensional Projection for LFM UWB Radar
摘要
Abstract
Two-Dimensional (2D) projection in temporal-Doppler plan is utilized to solve the effects of range-Doppler coupling and Doppler dispersion on radial velocity estimation for Linear Frequency Modulation (LFM) Ultra-WideBand (UWB) radar. First, temporal-Doppler 2D plane is got via 2D Fourier transform in fast-slow time domain. Second, 2D projection is performed to obtain energy focusing in UWB Doppler domain through mapping the UWB signal into narrow signal. Finally, radial velocities of moving targets are obtained according to the Doppler frequencies of the narrow signal after the mapping. This method not only solves the negative impacts of UWB radar Doppler dispersion on velocity estimation, but also voids that energy can not be accumulated in slow time since targets move along range resolution bins. Range profile of targets can also be got via the corresponding compensation with the estimated velocities. Besides, the velocity restriction is further derived according to the corresponding requirements. The simulation results illustrate the effectiveness of this method.关键词
超宽带雷达/多普勒色散/2维映射/速度估计Key words
Ultra-WideBand (UWB) radar/Doppler dispersion/Two-dimensional projection/Velocity estimation分类
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杨利民,苏卫民,顾红,薄超..基于二维映射的LFM UWB雷达动目标速度估计[J].雷达学报,2012,(3):232-237,6.基金项目
江苏省普通高校研究生科研创新计划资助项目(编号:CXZZ11_0252)资助课题 （编号:CXZZ11_0252）
