Implementation of an intelligent instrument for passive recognition and two-dimensional location estimation of acoustic targets

摘要

The development of an intelligent instrument for real-time recognition and location of sound broadband sources is addressed. The performance of this instrument was evaluated in an anechoic chamber. The necessary software and hardware implementation is explained. Very fast hardware is used to achieve real-time processing. The timing is the critical parameter of the system performance. Some advanced software techniques are used for the detection, recognition and position estimation of the source target. The method of cross correlation with a suitable interpolation function is examined for the estimation of the source position. Some experimental results are cited which provide a more quantitative study of the system performance for recognition and position estimation of a source.