常规杂波图在城市、滨海复杂环境下杂波抑制效果不佳,过多的虚假点迹严重影响目标的正常录取。文中利用雷达回波数据,分析杂波图背景的建立过程,发现杂波图单元内的信号幅度起伏明显,使得杂波图背景无法收敛。文中在等扇区扩展杂波图的基础上进行工程改进,实录数据验证其对杂波的抑制率提高90￡￥ ,目标损失小于1￡￥ 。针对该方法的计算量与内存需求量较大的困难,给出优化后的工程实现过程,相比常规杂波图只需增加一个扇区的缓存空间。该方法有效提升雷达强杂波环境下的检测性能,具有较强的工程应用价值。

The normal clutter map gets less performance under complex environment at city and littoral. Too much false plots make serious infection of target normal tracking. Radar original echo was recorded,that the process of clutter map back was analysed and found that the signal in some clutter map cells aws fluctuant, causing clutter map backs convergence. Clutter Map of expanding is improved and validated the performance, clutter suppressing rate is more than 90% and target loss rate is less than 1% . The process of engineering application was provided solving the problem of large amount of calculation and more RAM requirement, it is only adding RAM of one shape more than the normal clutter map. This method can improve the detection capability of radar under strong clutter environment, it has a strong engineering application value.

TN958