双线列阵左右舷目标分辨性能的初步分析

以单水听器阵列构成的单线阵声呐无法区分目标来自左舷或右舷。多线阵为解决左右舷目标的模糊问题提供了一种途径,本文讨论双线列阵左右舷目标分辨的性能,提出把波束指向方向的响应对对称方向的响应的抑制比作为评估左右舷分辨能力的一个参数,并对抑制比的性能作了初步分析,给出了理论表达及实际计算结果。理论分析结果对实际双线列阵设计中的参数选择具有重要意义。

Preliminary analysis of left-right ambiguity resolution performance for twin-line array

It is well known that the single line array sonar can't identify whether the target come from left or right. Multi-line array provides a possible method to solve the left-right ambiguity problem.The performance of left-right resolution for twin-line array is described in this paper.It is shown that the suppression ratio,which is defined as the ratio of the response in the steering direction to opposite symmetrical direction,can be as an index for evaluating the ability of solving left-right ambiguity.The characteristics of suppress ratio is discussed.The theoretical expression for suppression ratio and some numerical results are illustrated.The result of theoretical analysis can be used in design of twin-line sonar.