Research on the Neritic Hydrophone
Ke Chen · Automation and Instrumentation · 2008
The neritic hydrophone is a device,using piezoelectric sensing element to receive geologic signal and transform mechanical vibration signal to electricity signal.It is a special sensor in the ocean seismic exploration and engineering measure field.The neritic hydrophone is the key part of ocean seismic exploration,and its property has direct influence on the quality of seismic data acquisition.So the technique and application of neritic hydrophone are paid more attention by geophysicist.Nowadays the hydrophone of the exploration market has low sensitivity and it restricts seismic data acquisition of feeble signal to some extent.The neritic hydrophone,using four circular piezoceramicses sensing element to connect transformer,is introduced in this paper.Also the structure and equivalent circuit of the hydrophone are researched.Comparing the neritic hydrophone with cylindraceous hydrophone and doing the comparison with another one with preamplifier in it in the same condition,it turns out to be that this structural hydrophone is superior in sensitivity.So it improves the quality of seismic data acquisition and will achieve the modern ocean exploration technology.