多载波雷达的单次回波速度估计方法  

Multicarrier Radar Velocity Measurement Using Single Pulse

作　　者：王海青[1] 张劲东[1,2] 李彧晟[1] 朱晓华[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,南京210094 [2]南京航空航天大学信息科学与技术学院,南京210016

出　　处：《电子与信息学报》2010年第12期2868-2872,共5页Journal of Electronics & Information Technology

摘　　要：该文分析了多载波雷达信号静止目标和运动目标的回波模型,利用各个子载波上多普勒频率间的特殊关系,提出了分别在单散射点和多散射点目标模型下单次回波的速度估计方法,该方法将各个载波自相关处理后的数据进行非线性最小二乘估计测量速度。给出了相应的实现框图,分析了速度估计方法的理论精度和复杂度。理论分析和仿真结果表明该方法运算量小,灵活简便,且是有效的。In this paper, multicarrier radar signal models of stationary and moving targets are analyzed. Based on the Doppler frequency difference of different subcarrier, a new method is proposed to estimate the velocity of the target with one and multiple scattering points using single echo. This method measures the velocity from the data produced by multiple auto correlation channels using nonlinear least squares criteria. The correspondence processing scheme is given and the complexity of this algorithm is analyzed. Simulation results show that this method is feasible and effective.

关 键 词：多载波雷达 自相关 非线性最小二乘 单次回波 

分 类 号：TN957.51[电子电信—信号与信息处理]