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分析使用了一种PWAM(二级脉冲幅度调制以及脉冲宽度调制)光纤传输技术作为红外探测系统中的信号传输手段,用以取代传统的电缆传输方式。传输系统的主要指标设定在模拟信号的信噪比不小于50dB,数字信号的误码率不低于10-9。PWAM系统的接收机灵敏度作为主要的参数进行了分析。计算机仿真表明了PWAM光纤传输技术在红外探测系统中应用的良好性能。
The analysis uses a PWAM (Secondary Pulse Amplitude Modulation and Pulse Width Modulation) optical fiber transmission technology as a signal transmission means in the infrared detection system to replace the traditional cable transmission. The main indicators of the transmission system set in the analog signal signal to noise ratio is not less than 50dB, the bit error rate of digital signals of not less than 10-9. Receiver sensitivity of the PWAM system was analyzed as the main parameter. Computer simulation shows the good performance of PWAM optical fiber transmission technology in infrared detection system.