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.
出处
《电子与信息学报》
EI
CSCD
北大核心
2010年第12期2868-2872,共5页
Journal of Electronics & Information Technology
关键词
多载波雷达
自相关
非线性最小二乘
单次回波
Multicarrier radar
Auto correlation
Nonlinear least squares
Single echo
