摘要
针对射电星、高速调制等宽频谱信源的天线跟踪问题,提出了一种双通道跟踪接收机的实现方法。该方法采用宽频谱中的一段频谱进行和通道与差通道的双通道传输、变频和放大,进行模拟数字转换后在数字信号中完成跟踪角误差的提取与归一化,并在数字上完成高精度的相位校正。仿真结果表明,该方法可适用于各种类型信源的跟踪角误差的解调。
In view of the antenna-tracking problem with wide-spectrum signal of the radio star and high-speed modulation etc., a new implementation method for dual-channel digital tracking receiver is proposed in this paper.The sum signal and difference signal, chosen from a segment of the wide spectrum are transmitted,down converted and amplified.After two signals have undergone analog-to- digital conversion,angle error signals are demodulated and the phase errors are corrected by DSP.Experimental results show that,with the proposed scheme, signals from various sources can be used to demodulate angle error signals.
出处
《无线电工程》
2016年第12期8-11,16,共5页
Radio Engineering
基金
国家部委基金资助项目
关键词
双通道单脉冲
宽频段
跟踪接收
相位检测
dual-channel monopulse
broad band
tracking receiving
phase detection
