Research To The Dectection And Direction Of The Seismic Wave Fuse Signals Technology

Detection and identification difficulty of traditional underwater mine aiming at ship are greatly improved since the protection capability of modern ships is continuously enhanced while using hiding and noise reduction technology. Consequently the improvement and innovation of underwater mine technology are pressingly demanded and lead to the opportunity and direction of the seismic wave fuze technology.The seismic signals, which have a mechanism and a clear seismic fuse technology that is a key objective of signal detection and identification, were analyzed in this paper. Firstly, from the hydroacoustica engineering theory, in order to accurately detect the target signal, the study of the seismic waves to the fuse of sensitive devices - acoustic transducer was completed. Through access to information, comparing with various transducer receiver to be suitable for the low-frequency transducer work, with further double-curved laminated disc vibration transducer for the study, a reasonable design and technical design Feasibility analysis of seismic waves were given and the implementation of mine fuses technical feasibility was demonstrated. Secondly, the adaptive filter from the transducer output signal was extracted and the effective signal to noise suppression was identified at the same time. As the adaptive filtering technology in seismic waves was rarely applied, for each other's development it would play a more positive role in promoting. In this paper the use of adaptive filtering principle, two of the adaptive algorithm were conducted for the weak signal analysis and Matlab simulation through the realization of LMS algorithms and variable step size LMS algorithm was performed, and low-noise ratio was compared with the premise of both the advantages and disadvantages of algorithms. Finally, the adaptive filtering device was implemented by hardware DSP chip.