Real-Time, Very-Long-Baseline Interferometry Based on the Use of a Communications Satellite
Real-Time, Very-Long-Baseline Interferometry Based on the Use of a Communications Satellite
复制标题
基于通信卫星的实时、超长基线干涉测量
DOI：
10.1126/science.198.4314.289
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发表时间：
1977
期刊：
影响因子：
56.9
通讯作者：
G. Swenson
中科院分区：
文献类型：
--
作者：
J. L. Yen;K. Kellermann;B. Rayhrer;N. Broten;D. Fort;S. Knowles;W. Waltman;G. Swenson
赫尔墨斯卫星是加拿大和美国的联合项目，已被用于为甚长基线干涉测量(VLBI)提供西弗吉尼亚州和安大略省射电望远镜之间的通信通道。该系统通过更宽的观测带宽，使数据的瞬时相关成为可能，并使灵敏度大大优于早期的VLBI系统。有了地球同步通信卫星，就有可能省去磁带录音机和观测后数据处理中最麻烦的部分。另一种可能性是发展一种相位相干干涉仪。
The Hermes satellite, a joint Canadian-American program, has been used to provide a communication channel between radio telescopes in West Virginia and Ontario, for very-long-baseline interferometry (VLBI). This system makes possible instantaneous correlation of the data as well as a sensitivity substantially better than that of earlier VLBI systems, by virtue of a broader observational bandwidth. With the use of a geostationary communications satellite it is possible to eliminate the tape recorders and the most troublesome part of the postobservational data processing. A further possibility is the development of a phase-coherent interferometer.