光纤传输在数字阵雷达中的应用

分析了数字阵雷达的信号特点和传输要求,采用光纤传输技术设计了阵面上下之间的信号传输链路.设计运用数字复接和光波分复用的方法大幅度提高了单纤信道的传输容量,有效解决了数字阵雷达阵面大赶L/Q数据的回传问题;运用电中继与光功率分配相结合的方法实现了上行光信号的传输和广播式发送.设计综合分析了信道数量、带宽、传输距离、延时、抖动等因素对系统性能和扩展的影响.工程实践表明,光传输系统能够有效解决数字阵雷达的信号传输要求.

Application of Fiber-optic Transmission in Digital Array Radar

Signal characteristics and transmission requirements are analyzed in this paper.Fiber-optic transmission tech- nique is applied to the link between upper part and lower part of array.Single fiber channel capacity is increased significantly by a- dopting digital multiplex and fiber-optic wavelength division and multiplex(WDM).The backward transmission of large quantity of I/Q data can thus be solved effectively.Circuit relay transmission and optical power splitting are utilized to transmit upward going and broadcast of optical signals.In this paper,number of channels,bandwidth,transmission distance,delay time,jittering and other facts influencing system performance and its expansion are demonstrated.Engineering practice indicates:the transmission re- quirements of DAR can be satisfied employing fiber-optic transmission system.