无人机测控中单通道跟踪性能研究  

Study on Performance of SCM Tracking in UAV TT&C

作　　者：张彦峰[1,2] 

机构地区：[1]西安电子科技大学,陕西西安710071 [2]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2009年第7期56-58,共3页Radio Engineering

摘　　要：单通道跟踪的特点是设备简单、可靠性高,因此在无人机测控系统中应用广泛。AGC时间常数与和差通道相位对单通道跟踪的性能有很大影响。当AGC时间常数选取不当时,单通道信号的幅度包络将产生畸变,差信号将产生损失。当单通道信号的和差通道相位不一致时,单通道信号的调制度将减小。在分析AGC时间常数与和差通道相位对单通道跟踪性能影响机理的基础上,给出了AGC时间常数选取的原则和经验数据,介绍了相位校正的方法及其特点。The technology of single channel monopulse（SCM） tracking is widely used in UAV TT＆C with its simple equipment and high reliability.The time constant of automatic gain control（AGC） and the phase difference between Σ and Δ channels have significant effect on the tracking precision.Unsuited time constant may result in distortion of the amplitude envelop of single channel signal and loss of Δ signal.The phase difference between Σ and Δ channels can lower the modulation index of single channel signal.Based on the analysis of the time constant and the phase difference between Σ and Δ channels,the experiential data of the time constant and the method of phase correction are presented.

关 键 词：无人机 单通道 时间常数 相位校正 

分 类 号：TN820.4[电子电信—信息与通信工程]