一种基于卡尔曼滤波的多普勒滤波器  

A Doppler Filter Based on Kalman Filter

作　　者：陶松波[1] 徐向东[2] 孟藏珍[3] 陈天龙 

机构地区：[1]空军雷达学院研究生管理大队 [2]空军雷达学院信息与指挥自动化系 [3]空军雷达学院预警探测装备系 [4]94326部队

出　　处：《空军雷达学院学报》2008年第1期22-24,28,共4页Journal of Air Force Radar Academy

摘　　要：针对用固定窗口长度的多普勒滤波器进行测速时的不准确性,提出了自适应调节窗口长度的多普勒滤波器,给出累积估计错误准则求得最佳的窗口长度.利用卡尔曼滤波器提取加速度,自适应调节多普勒滤波器的窗口长度,通过雷达信号处理与数据处理一体化的方法,得到更为准确的多普勒频率及目标速度.仿真结果表明,它比基于固定窗口长度的多普勒滤波器有更精确的速度估计。Aimed at the inaccuracy of measuring velocity using Doppler filter＇s with fixed window length, a Doppler filter with adaptively adjusted window length was proposed, and accumulation estimation error rule to determine optimal window length was given. The acceleration was extracted by Kalman filter to adjust the window length of Doppler filter adaptively. By the integration method of radar signal processing and data processing, more accurate estimations of Doppler frequency and the velocity of targets could be achieved. The simulation shows that the tracking performance of adaptive window length is better than that of fixed window length.

关 键 词：雷达信号处理 雷达数据处理 多普勒频率 窗函数 卡尔曼滤波器 

分 类 号：TN957[电子电信—信号与信息处理]