水下声信号激光探测技术研究

水下声信号激光探测技术采用了激光接收技术。它在空气中利用光波，而在水中利用声波，把两种最佳的信道和物理场结合了起来，是遥感探测水下声信号的一种比较理想的方法。水下声信号在水空气界面会引起表面波动而对打在水表面处的激光束进行幅度调制。利用直接光强检测方法可以检测受水下声信号调制的激光信号。本文在理论分析的基础上通过试验验证了激光探测水下声信号技术的可行性，同时对水下声信号光电探测存在的问题进行了探讨并提出了相应的解决途径。

Research on Laser Detection of Underwater Acoustic Signals

The laser detection of underwater acoustic signals exploited a laser receiving technique. It uses light wave in air and uses acoustic wave under water. Because two best channels are combined together, it is an ideal method for remotely detecting underwater acoustic signals. The underwater acoustic signal can cause surface wave motion at waterair interface and modulate the magnitude of the laser beam falling on tile water surface. The modulated underwater laser signal can be detected by using a direct light intensity detecting method. In this paper, the feasibility of the laser detection of underwater acoustic signals is verified experimentally on the basis of theoretical analysis and some problems to be solved are discussed.