摘要
针对星间高精度测距系统地面远距离验证困难的问题,提出一种新的地面验证系统。该系统利用100 km光纤模拟地面长距离,通过测量载波相位波动并反馈控制光延时线的延时量,使光纤与光延时线总的传输延时保持稳定。本文对系统的相位传递关系及系统中存在的主要噪声进行理论分析并建立相应的模型,通过仿真和试验验证系统能够达到的精度。仿真及试验结果均表明,该系统能够抑制光纤传输延时的低频漂移,其精度能够满足高精度测距系统地面远距离验证的要求。
A new method of long-distance ground-based validation for high-precision inter-satellite ranging system is proposed. A piece of optical fiber with a length of 100 km is used as the long-distance signal path. The drift of the optical fiber transmission delay is suppressed substantially by measuring the carrier phase and then feedback controlling the optical delay line. In this way,the total transmission delay of the optical path remains stable. The phase transfer relationship of the system and the main noise in the system are analyzed meanwhile the corresponding models are established in this paper.Simulation and system experiments are performed to demonstrate that the actual accuracy meets the requirements of the system which can be used in the long-distance validation of a high-precision ranging system.
作者
叶蓓
王春晖
张朝杰
金仲和
YE Bei WANG Chun-hui ZHANG Chao-jie JIN Zhong-he(Micro-Satellite Research Center, Zhejiang University, Hangzhou 310027, China)
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2017年第10期1097-1104,共8页
Journal of Astronautics
基金
国家自然科学基金(61401389)
关键词
高精度测距
地面验证
远距离
延时漂移
High-precision ranging
Ground-based validation
Long-distance
Delay drift
