电讯技术2017，Vol.57Issue(5)：505-509,5.DOI:10.3969/j.issn.1001-893x.2017.05.003
数字应答机相参转发的实现
Implementation of Coherent Repeating in Digital Transponders
周林1
作者信息
- 1. 中国西南电子技术研究所,成都 610036
- 折叠
摘要
Abstract
For coherent repeating technical problems emerging in digital transponders,a method is proposed for coherent repeating through changing frequency control word of Direct Digital Frequency Synthesis(DDS) or overflow value of phase accumulator.The requirements on repeating performance and resource are analyzed and compared.The results show that the method of changing overflow value of phase accumulator is better and consumes less logic resource under the same conditions.This method sets DDS overflow value as a constant relative to turnaround ratio to avoid real-time operation procedure using multiplier and implement high accuracy repeating with less resource consumption and the turnaround ratio can be set arbitrarily.The method has been applied successfully in several engineering applications and meets the accuracy requirements of measurement system.关键词
测控系统/数字应答机/相参转发/直接数字频率合成Key words
TT&C system/digital transponder/coherent repeating/DDS分类
信息技术与安全科学引用本文复制引用
周林..数字应答机相参转发的实现[J].电讯技术,2017,57(5):505-509,5.
