摘要
双线列阵声呐可以利用自身的指向特性区分左右舷目标,但是其性能受线阵间距的约束,且存在分辨盲区。本文提出利用两个单线阵接收信号的时延差区分左右舷目标的方法。该方法对线阵间距具有宽容性,并且盲区明显减小。给出了理论分析结果和实施技术方法,提出了基于内插法的延时精确估计方法,从而可以解决左右舷目标的分辨问题。
The directivity function of twin-line array is limited by the distance between two lines and also sonar can be used to identify left/right target. But the performance exists the blind area for target identification. A method, which is based on the time-delay estimation between two line arrays, is proposed to identify left/right target. The method is robust with the variation of distance between two lines, the blind area is considerably decreased. The theoretical analysis results and realization method is described. An algorithm based on interpolation method for precisely estimating time-delay of two line array are derived, therefore the left-right ambiguity problem is solved.
出处
《声学学报》
EI
CSCD
北大核心
2006年第6期485-487,共3页
Acta Acustica
