Development of new materials hydrophones

The main material of the traditional sonar array hydrophone is piezoelectric ceramics, and the development of new materials can greatly improve the sonar performance. Today's new materials are piezoelectric polymers and optical fibers. Among the piezoelectric polymer materials currently are used for sonar arrays are PVDF (polyvinylidene vinyl) materials, and the French TSM2253 type side array sonar of hydrophones use this material. Great progress has been made in the study of hydrophones by using fiber optic materials, which have begun to be used in hydrophones for underwater fixed hydrophones and towed array sonars. The use of computer technology to make the sonar intelligent development Due to the rapid development of computer technology, the development of sonar has made breakthrough progress. piezo ceramic tubes is beamforming, signal processing, target tracking ,identification, system control, performance monitoring, fault detection and other functions are simulated by computer, which greatly improves the sonar performance. Many of the sonar equipment equipped in the advanced naval countries today are digital sonars that use digital computers for signal processing and system prosecution. 

With the further expansion of the sonar array, the advancement of submarine noise reduction technology and the reduction of target intensity, sonar signal processing through the microprocessor are using multi-level, parallel, distributed processing architecture, so that the sonar processing signal capacity is greatly improve. The US AN/BQQ-5 submersible sonar system uses distributed processing of piezo cylinder tube.The generation of artificial intelligence computers has enabled sonar technology to continue to evolve toward intelligence. A neural network research that has made remarkable progress, combining computer technology and signal processing of frequency piezoceramic transducer makes sonar intelligence possible in the near future. Summarization of 321st century sonar technology has the prospects. The advanced naval countries have invested a lot of manpower, financial resources and material resources for continuous research and development,which is updating and improving sonar technology and equipment performance, which further highlights the absolute importance of sonar in the naval equipment technology.The sonar technology of the piezoceramic tube transducer effectively combines the research and latest achievements in the fields of ocean acoustics, electronics, computer science, materials science and communication theory.which uses more accurate model data to characterize the physical characteristics of the ocean acoustic environment, which will be formed in the 20th century. The primary type sonar is integrated with sonar system which are further developed and enhanced to create advanced knowledge-based sonar and integrated intelligent sonar systems.