基于动态规划的雷达微弱目标检测  

Radar weak target detection based on dynamic programming

作　　者：罗小云[1] 李明[1] 左磊[1] 李响[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《系统工程与电子技术》2011年第7期1491-1496,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(60872137);国家部委基金(9140C0103071003)资助课题

摘　　要：微弱目标检测和跟踪是雷达信号处理领域中一个急需解决的关键问题,提出了一种将相参积累与基于动态规划的检测前跟踪算法相结合的雷达微弱目标处理方法,在该算法中引入方向加权的思想,减小动态规划的能量扩散范围,并采用两级门限检测方法降低运算量。仿真数据和实际测试数据处理结果表明,此算法对雷达微弱目标的检测性能优于传统方法,可以有效实现低信噪比下目标的检测与跟踪,且其处理速度较传统检测前跟踪方法有一定提高,更利于工程应用。A key problem in detecting and tracking weak targets is starving for being resolved in the field of radar signal processing.A method using coherent integration incorporated with track-before-detection approach based on dynamic programming algorithm is proposed for radar weak target detection and tracking.An idea of weighted direction is introduced to decrease the range of energy diffusion in dynamic programming algorithm.A technique of two-step detection thresholds is adopted to reduce the amount of computation.The results from both synthetic and experimental data show that the detection performance of this approach is better than the one of the traditional methods.It can be realized effectively that the detection and tracking of targets in low signal noise ratio.Furthermore,it has a higher speed of operation and is in more favor of project applications.

关 键 词：雷达信号处理 动态规划 检测前跟踪 微弱目标检测 

分 类 号：TN957[电子电信—信号与信息处理]