Impact Analysis of Remote Transmission Action on Underwater Explosion Signal

To deal with signal transmission problem on big equivalent charge underwater explosion test,the twist effect of explosion signal underwater by remote transmission was discussed.Firstly,the frequency characteristic of big equivalent charge explosion signal was analyzed,which helps to determine the upper limit frequency.Furthermore,the capacitance of long cable impact on signal was also analyzed,and the transmission distance of sine signal was gained by laboratory test.Based on the offshore explosion test and data analysis,the results show that when the cable length reach 240 m,the amplitude and frequency characteristic might meet the demand of big equivalent underwater explosion test.