分裂阵宽带相关检测在圆阵中应用

摘要

Broadband energy detection, which is considered as a non-correlation detection method, has been widely used in passive sonar. But the detection performance has degraded dramatically in complex environment. In order to apply split-array half beam to circular array, a novel technique of broadband correlation detection applied in circular array is presented. The phase difference of half beam has been derived and simulated in circular array. This technique can effectively improve target bearing resolution, and broadband detection performance of passive sonar is also improved. The processing results from trial data and simulation have showed the validity of the method, and the method is easily applied in practical engineering.%宽带能量检测作为一种非相关检测方法广泛应用于被动声呐中,但是在复杂环境下其检测性能迅速降低.为了实现分裂阵半波束在圆阵中的应用,本文通过对圆阵的半波束相位差推导和仿真,将分裂阵半波束应用于圆阵的宽带信号检测中,给出一种应用于圆阵的分裂阵宽带相关检测方法.该方法能有效地改善目标方位分辨率,提高被动声呐的宽带检测性能.仿真和试验数据处理结果验证了该方法的有效性,易于工程应用.