光电跟踪设备中光纤通信系统设计

为实现高数据传输率、强抗干扰性和超低误码率的目标，采用光纤通信技术传输高帧频、高分辨力的数字图像数据。本设计针对Cameralink接口红外图像数据源，设计了一种基于现场可编程门阵列(FPGA)控制的自适应分辨率和帧频的光纤收发系统，采用了低成本SPARTAN6器件XC6SLX45、串并转换芯片组DS90UB903/904、小型化单模小封装可插拔(SFP)单纤双向收发光模块，实现了双路图像光纤收发功能。其中FPGA接收Cameralink接口图像数据，进行图像转换处理，再通过内部集成电路(I²C)总线控制串并转芯片组实现自适应图像串行化和解串功能，并驱动光模块实现光电转换。本设计实现了分辨率640×512、帧频100 Hz红外图像数据的发送和接收功能，并通过了各项环境试验，已应用于实际型号项目中。

Design and application of optical fiber communication system in photoelectric tracking equipment

The optical fiber communication technology is adopted to transmit data image with high frame rate and high resolution in order to improve the anti-interference, transmission speed and bit error rate of the photoelectric tracking equipment. The long-distance transmission technology is mainly utilized in this design for Cameralink high-speed digital images, a full-mode Cameralink digital image optical transceiver end is studied based on Field-Programmable Gate Array(FPGA), including FPGA chip, Cameralink interface module, Small Form-factor Pluggables(SFP) optical module, Cameralink decoding module, mode control module. The functions of each module are mainly as follows: Cameralink interface module is utilized to receive Cameralink information and send the received information to Cameralink decoding module; Cameralink decoding module decodes the serial data and sends it to the serial-parallel signal conversion module; the signal conversion module performs serial-to-parallel conversion on the received digital image signal to form a serial data stream; the SFP optical module receives the serial data stream and converts it into an optical fiber signal; the mode control module controls the working mode of the transmitting end. This design can realize the data transmitting and receiving of infrared image in resolution of 640×512 and a frame rate of 100 Hz. It has finished several environment tests and is applied in engineering.