采用星载平台进行水下激光探测，具有覆盖面积大，探测效率高、机动性好、自身隐蔽性好、信息传输快等优点，但是实现难度较大。为了使反映目标特征的信息能量能够被探测器有效响应，激光脉冲信号需要通过空间信道、大气信道和海水信道，而且双向往返传输，整个链路情况非常复杂。通过建立激光传输模型，分析链路能量损耗，对星载激光水下目标探测的能量可行性进行理论验证。

Using spaceborne platform for underwater laser detection has many advantages, including a large coverage area, high detection efficiency, good mobility, good concealment, and fast information transmission, however its implementation is difficulty greatly. In order to detect the target information reflecting the characteristics effectively, laser pulse signal needs to be through space channel, atmospheric channel, and water channel, and that is all bidirectional transmission, the link is very complicated. Through the establishment of laser transmission model and analysis of the link energy loss, the theory feasibility of spaceborne underwater lasertarget detection is verified.