x
uploads/infrasonic.jpg

infrasonic adj.【物理學】亞聲的,次聲的〔聲頻低于人耳所能聽到的...

infrasound

Hi this thesis , the technique of detector array is used to obtain the location of anomalous infrasound , it is the basic of the study of prediction of earthquake . to derive useful information by using spectrum analysis on infrasonic signal . then combing with other methods a forecast could be made 本課題主要是利用數字技術,采用用傳感器陣列計算異常次聲波波源的方位,這是今后預測震中位置研究的前提;并對次聲信號進行頻譜分析,提取有用的關于臨震次聲方面的信息,再結合其他的預報方法,作出準確的地震預報。

The program includes the infrasonic signal data acquisition of three channels , 3 - d dynamic spectrum analysis , correlation analysis of 3 channel infrasonic signals , the calculation of wave direction , the wave speed , the spectrum analysis at any length and a real - time infrasonic gravity wave pressure - time ( p - t ) curve 本程序支持3路次聲波傳感器信號的數據采集、動態譜分析及次聲信號的相關分析、能計算波源的方位角、波速以及任意時間段的譜分析,并實時給出次聲重力波的壓力?時間曲線(即p ? t曲線) 。

Secondly an infrasonic array was constructed . the array is made up of three detectors with about 1 kilometer distance between each other . the three detectors are connected with telephone line 其次構建次聲陣列,用三個相距約一公里的次聲探頭構成次聲三元接收陣,它們之間用電話線傳輸數據,合理地布置各陣元的位置和方位,三路信號通過采集卡上的不同通道號輸入計算機。

Device that sends out lethal infrasonic sound wares to cause the internal organs of the human body to vibrate , displacing , distorting and rupturing them , and even resulting in death 發出次聲波來殺傷人的武器。次聲波能引起人體內臟共振,使內臟發生位移和形變,功能損壞,甚至造成人死亡。

An infrasound detecting software was developed in visual c + + . it is a real - time infrasonic data acquisition and analysis program of 3 - point array 最后用visualc開發一套次聲波探測系統軟件,實現3點陣次聲信號的實時數據采集和分析。

A look at the ways animals use electromagnetism , luminescence and infrasonic as well as ultrasonic waves -照顧動物福利拯救被遺棄動物接收棄養動物并安排領養提供住院醫療