摘要
针对卫星在早期轨道任务中的漂移速度快、难以捕获到最大信号的特点,提出了一种新的快速校相方法。以常用的双通道跟踪接收机为基础,分析了该种方法的原理,并最终以软件形式实现。这种快速校相方法可以不需要寻找自跟踪零点,在卫星早期轨道任务中,配合程序跟踪文件,天线偏移一次即可完成校相,使得校相时间控制在5秒以内。结果表明,这种校相方法能够满足对卫星早期轨道任务的要求。
A novel fast phase calibration method is proposed,aiming at quick satellite drifting and difficult acquisition of strongest signal in Launch Early Orbit Phase（LEOP）.Based on dual-channel tracking receivers,the theory of fast phase calibration is analyzed,and its function is realized through software.This method requires no finding of autotracking zero point,and it could be finished through one-time movement of the antenna in co-ordination with program tracking file in LEOP.The time for calibrating phase is not more than 5 seconds.The results show that this calibration could meet the requirements of LEOP.
出处
《通信技术》
2011年第1期3-5,共3页
Communications Technology
关键词
早期轨道任务
卫星
快速校相
自跟踪零点
launch early orbit phase（LEOP）
satellite
fast phase calibration
autotracking zero point
