摘要
雷达的作用距离与雷达对目标的最低可检测信噪比直接相关,现代雷达要达到对目标的可靠检测,一般要求单个脉冲的信噪比为13 dB左右.为此,将低门限检测、卡尔曼滤波与动态规划算法相结合,以在雷达中实现检测前跟踪,并给出了检测前跟踪与检测后跟踪相衔接的方法.该方法使雷达将可靠检测的信噪比降到7 dB左右,相当于将雷达的最大作用距离提高了近40%.仿真结果表明,所提出的方法是可行而有效的.
The maximum radar range is related closely with radar minimum detectable signal-to-noise ratio（SNR）. To achieve reliable radar detection, the SNR of a single pulse is usually required to be about 13dB. A method combining low threshold detection, Kalman filtering and dynamic programming algorithm is firstly employed to realize track-before-detect. By applying this method, reliable detectable SNR of the radar can be decreased to about 7 dB, which means that the maximum radar range is increased by around 40%. Link-up process between track- before-detect and track-after-detect as well as simulation results show the effectiveness of the method.
出处
《控制与决策》
EI
CSCD
北大核心
2006年第8期885-888,共4页
Control and Decision
基金
"十五"国防预研基金项目(YJ0267070)
关键词
检测前跟踪
非相参积累
动态规划
卡尔曼滤波
Track-before-detect
Noncoherent integration
Dynamic programming
Kalman filtering
