匹配场处理分布式多阵水下目标三维定位方法

Distributed Multi- array Underwater Target Three Dimensional Localization Based on Matched Field Processing

针对水下目标定位问题,提出一种基于匹配场处理的分布式多阵列三维定位方法。首先,各分布式阵列节点采用非相干线性匹配场处理算法,独立对同一个目标进行深度和距离估计,然后对各节点的目标估计结果进行协同定位处理,采用线性最小二乘算法对水平方位定位结果进行修正,以各节点的目标定位深度均值作为目标深度估计。海上试验数据验证表明,所提出方法可有效地实现水下目标三维定位。

In this paper,a new method of three dimensional localization with distributed multi- array based on matched field processing is proposed for underwater target detection. Firstly,the distributed array nodes estimated the depth and distance of the same target by using the incoherent conventional matched field processing algorithm independently. The estimation results of all the nodes are processed together to get the target’s three dimensional location. The linear least square algorithm is used for horizontal orientation correction. The average of target depth of each node is as the real target depth. Sea trial data analysis shows that the proposed method can effectively estimate the three dimensional location of underwater target.