A look at the ways animals use electromagnetism , luminescence and infrasonic as well as ultrasonic waves -照顧動(dòng)物福利拯救被遺棄動(dòng)物接收棄養(yǎng)動(dòng)物并安排領(lǐng)養(yǎng)提供住院醫(yī)療
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(fā)一套次聲波探測(cè)系統(tǒng)軟件,實(shí)現(xiàn)3點(diǎn)陣次聲信號(hào)的實(shí)時(shí)數(shù)據(jù)采集和分析。
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(gòu)建次聲陣列,用三個(gè)相距約一公里的次聲探頭構(gòu)成次聲三元接收陣,它們之間用電話線傳輸數(shù)據(jù),合理地布置各陣元的位置和方位,三路信號(hào)通過采集卡上的不同通道號(hào)輸入計(jì)算機(jī)。
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(hào)的數(shù)據(jù)采集、動(dòng)態(tài)譜分析及次聲信號(hào)的相關(guān)分析、能計(jì)算波源的方位角、波速以及任意時(shí)間段的譜分析,并實(shí)時(shí)給出次聲重力波的壓力?時(shí)間曲線(即p ? t曲線) 。
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(shù)字技術(shù),采用用傳感器陣列計(jì)算異常次聲波波源的方位,這是今后預(yù)測(cè)震中位置研究的前提;并對(duì)次聲信號(hào)進(jìn)行頻譜分析,提取有用的關(guān)于臨震次聲方面的信息,再結(jié)合其他的預(yù)報(bào)方法,作出準(zhǔn)確的地震預(yù)報(bào)。