摘要
论述了ＶＬＢＩ２５ｍ天线电参数测试系统，着重介绍了自行研制的同轴液氮冷热噪声源，并进行了可行性和误差分析，其精度可以达到国家二极标准，同轴接口误差为±１．０Ｋ，满足了ＶＬＢＩ的实际应用。
Discusses the testing system for VLBI 25m antenna electrical parameters.Main-ly introduces self-developed coaxial liquid nitrogen cold noise sotirce and analysed the feasibility and errors The accurary of the system can reach second grade of national standard The error of coaxial interface is better than ±1.0K
出处
《宇航计测技术》
CSCD
北大核心
1995年第3期52-58,64,共8页
Journal of Astronautic Metrology and Measurement
关键词
天线
电路参数测量
噪声源
Antenna. Circut parameters measurement Noise source
