回: circle; wind光信号: optical signal; photosignal回光信号法: heliography彩光信号机: colour light signal灯光信号: light beacon; light signal; marker light灯光信号盘: tote board发光信号: luminous signal反光信号: heliogram光信号报警: light alarm光信号处理: optical signal processing光信号传播: light ray propagation光信号调制: optical signal modulation光信号工具: means of light signalling光信号估值: optical signal estimation光信号混合: light mixing光信号畸变: optical signal distortion光信号级: osl optical signal level光信号检测: optical signal detection光信号探测: optical signal detection光信号通路: photo-signal channel光信号载波: optical signal carrier光信号熵: optical signal entropy红光信号: red flare; red signal light激光信号: laser signal; laser singal; lasersingal近光信号灯: pasing beam tell tale
