讨论了用调制传递函数(MTF)表征水下激光成像质量特性及其影响因素的量值关系,给出了计算该系统MTF的理论近似公式,得出了MTF与空间角频率、目标距离及接收视场角的关系,结果表明采用窄视场的同步扫描技术能有效地提高系统的成像质量。

The modulation transfer function(MTF) to characterize the quantity relationships for imaging quality of an underwater laser imaging system and its influence factors is discussed and its approximate formula is given. The relationships of MTF with spatial angle frequency, target distance and the received view angle are derived. The results show that imaging quality can be effectively improved by using synchronous scanning technology with narrow view.