The method of locating rocket launching with ternary infrasonic array

In recent years, infrasonic localization techniques based on generalized cross-correlation delay estimation and single-array directional multi-array localization have been widely studied, and many methods improving time difference measurement are presented. The existing localization methods are mainly used for locating remote infrasound sources. So far, only few studies have addressed the localization problem of moving infrasound events that last up to 3~4 minutes. In this paper, a time-delay estimation method based on short-time energy mutation is proposed, and a three-station localization method is used to locate rocket launch events according to the distribution of actual stations. The results show that the orientation error of a single ternary infrasound array is less than 2° and the distance error is about 3.17% in the case that the actual distance is 52.74 km and the locating error is 1.67 km, so the locating accuracy is higher. The research shows that the proposed time delay estimation locating method is feasible.