自适应干扰抵消应用于二元阵时间反转镜定位研究

Research of Two-sensor-array Time Reversal Localization Technology Using of Adaptive Interference Counteraction

时间反转镜是一种新兴的声呐定位技术,可以实现目标检测和定位。但,当存在多目标干扰时,时间反转镜的检测能力将下降,定位精度将变差。自适应干扰抵消技术广泛应用于声纳信号处理中,用以提高声纳抗干扰能力和检测性能。它对自适应干扰抵消应用于时间反转镜技术进行了研究,以提高多目标干扰条件下,时间反转镜的检测能力和定位性能。它阐述了自适应干扰抵消技术应用于二元阵被动时间反转镜定位的基本原理,并给出了相应的处理公式。它用仿真数据验证了算法,处理结果表明:该方法可使二元阵时间反转镜检测能力提高3dB以上,同时还实现了去干扰伪峰,提高了定位精度。当然,它也指出算法的改进方向:降低运算量和合理选取参考信号。

The time-reversal mirror technology is a new method of localization, which may be applied to target detection and localization effectively. Multi-target interfere affected the performance of time-reversal mirror, which reduced the detection capability and the localization precision. The technology of adaptive interference counteraction was used in sonar signal procession, which improved the detection capability and anti-interfere capability. The two-sensor-array time reversal localization technology was studied using of adaptive interference counteraction. The main principle of the time-reversal technology using of adaptive interference counteraction was proved and the relevant formula was proposed. The arithmetic was verified by way of simulation data follow, which terrified that after using adaptive interference counteraction, the detection capability enhanced 3dB and also reduced the amplitude of false apices. On the other hand, it is necessary to improve in reducing compute burden and selecting reference signal more reasonable.