【摘要】 针对恒幅点频信号常用的直接模拟调制光传输和PCM采样数字化光传输方式存在的缺陷,提出一种简单可靠的增量调制数字化恒幅点频信号信号光传输方案,该方案根据采样定理进行增量调制采样,省去直接模拟调制的非线性补偿电路或PCM采样数字化的ADC/DAC转换电路。该方法调试简单,系统可靠,传输距离远,抖动性能指标较好。更多还原

【Abstract】 For the defect of traditional methods for transmit constant amplitude fixed-frequency signal,the direct analog modulation optical transmission and the PCM sampling digitize optical transmission,this paper proposes a simple but reliable method,delta modulation digitize constant amplitude fixed-frequency signal optical transmission.The new method do delta modulation sampling based on the sampling theorem,it eliminates the needs for the nonlinear compensation circuit of direct analog modulation transmission and the ADC/DAC conversion circuit of PCM sampling digitize transmission.Delta modulation digitize optical transmission has the advantages of simple debugging,more reliable,farther transmit distance and better jitter performance index.更多还原