朝鲜4.13“光明星3号”卫星发射次声信号分析

朝鲜4.13"光明星3号"发射是一次包含火箭发射与爆炸次声信号的事件。对火箭发射激发次声信号的基本理论、影响火箭发射激发次声信号监测能力的因素等进行了简要阐述;在分析火箭发射历史次声信号的基础上,研究了该类信号的信号走时、频率及波形特征;对"光明星3号"发射激发的次声信号从事前预判、信号检测、爆炸区域确定、误差原因分析等方面进行了详细分析说明。研究分析结果表明:朝鲜"光明星3号"的爆炸疑似区域为北纬35.2756°～36.3887°,东经125.1675°～126.5487°。

ANALYSIS OF INFRASOUND GENERATED BY THE SATELLITE GUANGMINGXING 3 LAUNCHED ON 13TH APRIL

The launch of Guangmingxing 3 is an interesting event which contains the infrasonic sound generated by both the rocket launch and the following explosion.The basic theory of infrasound generation by rockets,and the conditions which affect the monitoring ability are expatiated in the paper.The relationship of the transmission time and the detected signal frequency with the transmission range,and the waveform characteristic are gotten by carefully analyzing of historical infrasound signals.The pre-estimated parameters are used for signal confirmation,the signals are detected by WinPMCC,and the possible explosion region is gotten by the infrasound monitoring signals,also the error of the signal parameters is illuminated.The results show that the satellite Guangmingxing 3 explosion latitude maybe between 35.2756°and 36.3887°and the longitude between 125.1675°and 126.5487°.