摘要
针对三站连续波干涉仪系统，根据实时测得的系统场区大气折射率漂移数据，应用几何光学方法，从理论上估计了连续波干涉仪系统两条微波基线（分别为３４、１５ｋｍ和２８．５ｋｉｎ）传输的相位稳定性。得出ｓｍｉｎ基线传输电长度漂移最大值分别为１．１９１ｃｍ和１．８３１ｃｍ，４５ｍｉｎ基线传输电长度漂移最大值分别为１１．０９７ｃｍ和１０．７０３ｃｍ，几何光学估算法可在数量级上估算基线传输的相位漂移。要改善干涉仪系统的工作性能，基传和系统设备两方面引起的相位不稳定都要力。以考虑，更应努力解决系统设备的跳变问题。
it is presented in the paper the theoretical estimation of phase stability of two microwave baselines(lengths 34. 15km arid 28. skin respectively)to a three-element interferometer by geometric optical method usingthe simultaneously measured atmospheric refractive index shifts over τ minutes. The maximum electric-length(EL)shifts of 34. 15km and 28. skin baselines in 5 minutes interval are 1. 919cm and 1. 813cm, in 45 minutes are 11.079cm and 10. 703cm respectively. The comparisons are made between the EL shifts measured by the interferometerilnd those by theoretic estimation. It shows that the geometric optical method can be used to get the magnitude degreeof Ed shifts in baseline propagation. The data jumps of the system device should be reduced in order to Obtain thehigh measurement precision.
出处
《电波科学学报》
EI
CSCD
1996年第3期42-45,64,共5页
Chinese Journal of Radio Science
关键词
大气折射
微波传输
相位稳定性
几何光学法
漂移
Atmospheric refractive index, Baseline propagation, Phase stability, Geometric optical method
