摘要
应用高精度甚长基线干涉测量技术(VLBI)的观测系统要求对相位和延迟进行精确校准。通过对相位校准原理的分析,给出了一种基于相关技术的相位校准信号处理方法,利用提取的相位校正信号的幅度和相位,对注有相位校准信号的射电星信号的延迟差观测值进行了修正,仿真结果表明给出相位校正信号的处理方法有效。
The precise phase and time delay calibration is required for high-precision Very Long Baseline Interferometry observation. Through the analysis of the phase calibration principle, a method for processing phase calibration signal based on the correlation had been developed, the extractive amplitude and phase of phase calibration signal was used to calibrate the delay value of quasar signal in the same channel. The simulation results showed the validity of the proposed method in this paper.
出处
《载人航天》
CSCD
2010年第4期5-8,13,共5页
Manned Spaceflight
关键词
VLBI
相位校正
阶跃二极管
Very Long Baseline Interferometry
Phase Calibration
Bandwidth synthesis
