摘要
高斯白噪声背景下,采用滑窗能量积累检测器进行扩展目标检测存在陷落损失问题。对此,提出了基于距离单元筛选的扩展目标检测方法。采用参与能量积累的距离单元所具有的等效信噪比最大化作为距离单元筛选准则,并对筛选出来的距离单元进行能量积累检测。通过距离单元筛选减少滑窗能量积累检测中参与积累的背景噪声单元数量来改善检测性能。最后,通过仿真实验验证了距离单元筛选性能以及基于距离单元筛选的扩展目标检测方法的检测性能。实验结果表明,对于散射中心稀疏分布的扩展目标,该方法能够有效改善距离像滑窗能量积累检测的检测性能。
The problem of collapsing loss is true when the algorithm of sliding window energy integration detector is used for distributed target detection. A new method of distributed target detection based range cell riddling is proposed. The range cells are selected with the rule of maximizing the equivalent signal-noiseratio of the range cells for energy integration. The performance is improved by reducing the number of noise cells for energy integration. Finally, simulation tests verify the rule of range cells riddling arid the distributed target detector based range cell riddling. The result of simulation shows that the efficiency of the method.
出处
《雷达科学与技术》
2012年第3期294-300,共7页
Radar Science and Technology
关键词
扩展目标
高分辨距离像
检测
陷落损失
distributed targets high range resolution profiles detection
collapsing loss
