基于到达时差法的目标定位系统

运用声被动定位理论探索空中目标的定位问题。建立了一种平面波声被动定位模型,利用简易被动声传感器阵列,分析并设计了定位系统的总体结构。提出了一种简易的计算到达时差电路设计方案,此电路利于目标的实时定位。在利用这种系统定位远距离目标时,可消除有效声速的影响。最后给出了几组实验结果,证明了此系统的可行性,但对近距离目标的定位结果较差,模型需进一步研究。

Target Localization System Based on Time Difference of Arrival

This paper, discusses target localization by using the theory of acoustic passive localization in the air. It establishes a planar wave acoustic passive localization model, and designs the general structure of the position system using simple passive acoustic sensor arrays. It proposes a simple method to design calculating circuit of time difference of arrival and the circuit is fit for target localization in time. It could eliminate the disturbance of the effective sound velocity when using the system to position distant targets. Several tests show this system is feasible, but it needs amelioration when position near targets.