文章摘要
殷昊,庞新良,张震川.三元次声阵定位火箭发射的方法[J].声学技术,2021,40(5):728~733
三元次声阵定位火箭发射的方法
The method of locating rocket launching with ternary infrasonic array
投稿时间:2021-04-09  修订日期:2021-05-21
DOI:10.16300/j.cnki.1000-3630.2021.05.021
中文关键词: 短时能量突变  时延估计  火箭发射  次声三站定位
英文关键词: short-time energy mutation  time delay estimation  rocket launching  three-station location of infrasound
基金项目:
作者单位E-mail
殷昊 国民核生化灾害防护国家重点实验室, 北京 102205  
庞新良 国民核生化灾害防护国家重点实验室, 北京 102205 pangxinliang@sina.com 
张震川 国民核生化灾害防护国家重点实验室, 北京 102205  
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中文摘要:
      近些年来,基于广义互相关时延估计、单阵定向多阵定位的次声定位技术得到了广泛研究,针对时间差的获取提出了大量改进方法,这些定位方法主要是针对远程次声源的定位。然而,对于持续时间长达3~4 min且处于运动状态的次声事件的定位研究较少。提出了一种基于短时能量突变的方法进行时延估计,并结合实际站台的分布情况采用三站定位方法对火箭发射事件进行定位。结果表明:单个三元次声阵定向误差在2°以内,距离误差约为3.17%(实际的距离为52.74 km,定位误差为1.67 km),定位精度较高,说明提出的时延估计定位方法是可行的。
英文摘要:
      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.
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