摘要
声纳在主动探测浅海中的小目标时存在如何抑制混响、提高信混比的问题。在分析时间反转处理物理机理的基础上,根据实际的海洋环境,进行了计算机仿真,仿真结果表明时间反转处理具有空间聚焦的能力。通过设计时间反转处理实验,构建实时处理的实验系统,进一步验证了时间反转处理物理实现的可行性。实验结果表明,构成的物理时反系统具有抑制混响、提高信混比8.5dB的能力。
The suppression of reverberation and enhancement of signal-to-reverberation ratio is the key problem faced by active sonar system in the detection of small targets in shallow water. After the underlying physics of time reversal processing （TRP） was analyzed, we performed data simulation based on ocean environmental parameters. The simulation results illustrate that TRP has the ability of spatial focus. By designing TRP system, we built a real-time experimental system, and validated the feasibility of a physical time reversal system. The experiment results show that the physical TRP system can suppress the reverberation and improve the signal-to-reverberation ratio by 8. 5 dB.
出处
《传感技术学报》
EI
CAS
CSCD
北大核心
2006年第3期847-850,共4页
Chinese Journal of Sensors and Actuators
基金
国家安全重大基础研究项目资助(5132103ZZT21B)
重点实验室基金资助(51446070104JW0401)
关键词
时间反转处理
提高信混比
主动声纳
time reversal processing
signal-to-reverberation ratio enhancement
active sonar
