激光告警机中波长检测系统的FPGA实现

介绍一种用于激光告警机的图像采集与处理系统的硬件设计和软件开发方法。该系统采用线阵CCD获取激光信号,FPGA完成采集控制和信号处理工作,CCD相机与FPGA之间通过Cameralink接口方式传递数据,FPGA采用LVDS端口标准接收数据,数据处理系统由FPGA来实现快速傅里叶变换。实现了激光告警系统的采集与处理的单片集成。对系统各模块分别进行了局部调试和仿真,最后将采集所得的数据频谱图与FFT变换之后的数据频谱图进行比较,结果表明告警系统能够正确探测到目标激光的波长信息。

The accomplishment of wavelength detection in the laser warning based on FPGA

Method of the developments hardware and software used for image collection and transaction system of laser warning are in-troduced.The laser signals are obtained by linear CCD in this system,and the data can be transferred by the mode of Cameralink between CCD camera and FPGA hardware.The LVDS port standard is adopted in the FPGA hardware to accept the data,and the FFT is programmed in the FPGA hardware to complete the disposal of the data.The data collection and transaction of the laser warning system is integrated in a single chip.Every parts of the system is debugged and simulated.The spectrum graph obtained in this system is compared with that achieved in FFT,and the result shows that this laser warning system can detect the laser wave-length correctly.