作者：杨晓虹^1,2, 王黎明^1,2, 迟珊珊^1,2, 王含蕾^1,2

作者单位：1. 中北大学信息与通信工程学院, 山西 太原 030051;
2. 中北大学 信息探测与处理山西省重点实验室, 山西 太原 030051

关键词：温压炸药;抛洒密度;温度分布;层析成像重建

摘要：

温压炸药在爆炸过程中的抛洒密度决定其毁伤性能,而目前尚未找到一种合适的方法对抛洒密度进行直接测量进而对炸药的毁伤性能进行评估。针对该问题,提出一种通过测量温度分布间接反映炸药抛洒密度的方法。为满足爆炸场高温、高压、迅速等恶劣条件,依据声温理论所定义的声速与温度之间的关系,提出利用声层析成像重建来测量温度分布。通过建立模型和模拟仿真验证,分别利用联合迭代重建法和最小二乘法重建并进行结果对比,得到的相对误差分别为7.2%,5.1%,5.6%,4.2%,基本达到测试准确度要求,说明该方法在研究爆炸场温度分布反映炸药抛洒密度的问题上有一定的实用性和有效性。

An indirect measurement method for thermobaric explosive throwing density

YANG Xiaohong^1,2, WANG Liming^1,2, CHI Shanshan^1,2, WANG Hanlei^1,2

1. Institute of Information and Communication Engineering, North University of China, Taiyuan 030051, China;
2. Institute of Signal Capturing and Processing Technology, North University of China, Taiyuan 030051, China

Abstract: Throwing density in explosion process determines the damage performance of thermobaric explosive, but there are no suitable methods to measure the throwing density so as to estimate the destruction of explosive. A method that temperature distribution is measured as an indirect means to reflect the throwing density of thermobaric explosive is proposed in this paper. In order to meet the abominable conditions of high temperature, high pressure and high speed at blast fields, it is proposed to test the temperature distribution through tomography reconstruction according to the relation between acoustic velocity and temperature defined by sound-temperature theory. Simultaneous iterative reconstruction technique (SIRT) and least square method are applied for reconstruction through modeling and simulation, and the reconstruction results are compared. The errors of the two methods are 7.2%, 5.1%, 5.6% and 4.2% respectively, basically meeting the testing accuracy. This suggests that the proposed method is practical and effective in respect to the measurement of temperature distribution at blast fields to reflect the explosive throwing density.

Keywords: thermobaric explosive;throwing density;temperature distribution;tomography reconstruction

2016, 42(4): 29-32,44  收稿日期: 2015-08-29;收到修改稿日期: 2015-10-21

基金项目: 

作者简介: 杨晓虹(1990-),女,山西晋中市人,硕士研究生,专业方向为信号与信息处理。

参考文献

[1] 周莉. 温压炸药的爆炸参数测试与威力评估[D]. 南京:南京理工大学,2013:1-6.
[2] 田丰,孙小平,邓福军,等. 声学法电站锅炉温度场重建算法的研究与比较[J]. 量子电子学报,2003(10):35-38.
[3] SRINIVASAN K, SUNDARAJAN T, NARAYANAN S, et al. Acoustic pyrometry in flames[J]. Measurement,2013(46):315-323.
[4] 张华宇,谢凤芹,李强. 超声波在空气温度场重建中的应用[J]. 山东科技大学学报(自然科学版),2012,31(1):94-98.
[5] 颜华,陈冠男,杨奇,等. 声学CT复杂温度场重建研究[J].声学学报,2012,7(4):370-377.
[6] 王善辉,颜华,李爽. 声学层析成像传感器布局设计[J]. 中国科技论文,2014,4(4):413-416.
[7] MINAMIDE A, WAKASTUKI N, MIZUTANI K. Acoustic computerized tomography for temperature distribution measurement in rectangular space[J]. J Acoust Soc Am,2008,123(5):2133-2138.
[8] 刘培珍,柯友爱. CDMA通信技术的原理及其与TDMA、FDMA的比较[J]. 无线互联科技,2015,1(2):45-46.
[9] 林智慧,陈绥阳,王元. m序列及其在通信中的应用[J]. 现代电子技术,2009(9):9-13.
[10] 田丰,邵富群,王福利. 基于正则方法与迭代技术相结合的复杂温度场重建算法[J]. 东北大学学报(自然科学版),2003,24(4):307-310.
[11] 白苗苗,郭亚丽,王黎明. 水中爆炸冲击波超压场重建算法与比较[J]. CT理论与应用研究,2014,11(2):29-33.
[12] 白苗苗,郭亚丽,王黎明. 基于EM算法的爆炸超压场重建技术[J]. 弹箭与制导学报,2014,34(6):17-22.
[13] MUKOYAMA M, OHGA K, YABE Y, et al. Temperature distribution measurement based on ML-EM using square type ultrasonic CT system[J]. SICE Annual Conference,2011(9):13-18.