采用I/Q矢量调制器的单通道单脉冲信道合成方案研究

Scheme for integration of single-channel monopulse channels by using I/Q vector modulator

三通道单脉冲跟踪体制存在的问题是和/差信号在各自通道传输时的幅相不一致校准困难,设备复杂,成本较高。采用频分和时分复用技术将三通道(或双通道)合成为单通道的单脉冲天线跟踪系统在遥测、遥感、通信等领域已得到广泛的应用。这里给出一种采用I/Q矢量调制器将双通道组合成单通道的单脉冲信道合成方案,同时给出调幅包络检测后角误差电压分解方法。

when∑-？ signal is transfered in their own channels, the problem existing in the three-channel monopulse tracking system is that the inconsistency of their amplitude-phases is difficult to be calibratect. In addition, the three-channel monopulse tracking system is complicated and its cost is high. The monopulse antenna tracking system in which the three channels （or two channels） are integrated into single-channel by using multiplexing technology of frequency division and time division has been widely used in fields of telemetry, remote sensing, communication and so on. A scheme that the two chan- nels are integrated into the single channel by using I/Q vector modulator is given. The voltage decomposition method of detec- ting relief angle error by the amplitude-modulated envelope is given.