基于FPGA的机载光电观瞄成像装置系统设计

FPGA-based airborne electro-optical observation and imaging device system design

针对国内高分辨率、高帧频航空成像系统的国产化开发需求,提出一种基于现场可编程门阵列FPGA、图像传感器CMOS和Camera-Link接口等国产化元器件的实时图像采集系统,应用于机载光电观瞄成像装置。FPGA包括I2C配置寄存器、CMOS时序驱动、图像数据采集、Camera-Link接口数据传输以及UART串口通信模块。利用FPGA内部资源OSERDES实现Camera-Link并串转换,可以节省FPGA的大量IO管脚和布线资源,实现机载光电观瞄成像装置的低成本和集成化。对该观瞄成像装置进行测试,连续输出30帧和60帧,输出图像大小为1024*768,输出数据位宽为12 bit,基本满足航空成像系统的需求。

To meet the domestic demand for localized development of high resolution and high frame rate aerial imaging system.A component localized real-time image acquisition system based on FPGA,CMOS and Camera-Link interface was designed.It is applied to airborne electro-optical observation and imaging device.The FPGA includes I2C configuration registers,CMOS timing driver,image data acquisition,Camera-Link interface data transfer and UART serial communication module.The FPGA internal resource OSERDES is used to implement Camera-Link parallel-serial conversion,which saves a lot of IO pins and wiring resources of the FPGA and realizes the airborne electro-optical observation imaging device low cost and integration.The imaging test of the observation imaging device has achieved continuous output of 30 frames and 60 frames,with output image size of 1024*768 and output data bit width of 12 bit,which basically meets the requirements of aviation imaging conditions.