摘要
提出一种低温接收机噪声分时注入方法,可以在线对接收机系统进行标定。可以有效地解决大气变化、地表噪声、链路增益变化等对系统定标照成的影响。该方案已应用在国内多台射电望远镜项目中,并获得较理想的效果。
This paper presented a time-sharing noise injection method for cryogenic receivers, which could calibrate the receiver system online.It could effectively solve many problem such as the influence of atmospheric change, surface noise, RF link gain instability. The scheme was applied to several radio telescope projects in China and achieved satisfactory results.
作者
刘文其
孙婷婷
肖南
贺俊霞
葛玲
Liu Wenqi;Sun Tingting;Xiao Nan;He Junxia;Ge Ling(Key Laboratory of Superconducting & Electronic Technologies, CETC, Hefei 230088 , China;The 16th Institute of CETC,Hefei 230088, China)
出处
《低温与超导》
CAS
北大核心
2019年第5期86-90,共5页
Cryogenics and Superconductivity
关键词
低温接收机
噪声注入
分时
标定
Cryogenic receiver
Noise injection
Time-sharing
Calibrate
