对宽带数据传输信号的角跟踪理论

Theory of Angel Tracking for Broadband Data Transferred Signal

以宽带数据传输信号(例如调制方式为BPSK或QPSK,码速率100kbps^300Mbps)为测角信号源,采用双模(例如和模为TE11,差模为TM01)跟踪天线馈源,给出了单通道跟踪接收机方案.跟踪接收机中频带宽仅为数传信号频谱主瓣宽度的小部分(例如1/5或1/10).本文从三个方面论述这种角跟踪理论:(1)取数传信号频谱主瓣的小部分(如1/5~1/10)带宽内信号实现角跟踪的理论的数学推导;(2)从物理概念上解释这种理论的正确性;(3)实验验证这种理论的正确性;按此理论研制成功Ka频段角跟踪系统,捕获跟踪性能很好.

A single-channel mono-pulse tracking receiver is given in this paper,it use broadband data transferred signal （such as modulation mode is BPSK or QPSK,data rate is 100kbps to 300Mbps） as angel-measured source, and two modes （sum mode is TEll and difference mode is TM01） as tracking antenna feed.The tracking receiver can detect angel error signal when IF band is one part of signal main band （such as 1/5 or 1/10） .This paper analyze angel tracking theory from three aspects：first is mathematic theory; second is physical explanation, third is experimentation demonstration. According to this theory, Ka band angel tracking system was successfully developed, its performance was very fine.