摘要
高精度K频段微波星间测距系统(KBR)采用双路微波测距技术,测量精度可达到1μm/s,是地球重力场测量卫星的三大有效载荷之一。作为整个系统时间基准的超稳定振荡器(USO),是实现KBR微米级测量精度的关键。文章在研究KBR测距技术的基础上,对USO进行了研究和设计,研制成功的USO的短期频率稳定度达到了5×10-13/s(Allan方差),达到了指标要求。
The accuracy of high accuracy KBR system （K Band Ranging System）could reach 1 μm/s based on dual-one-way microwave-ranging technology. The KBR system is one of the three major payload of gravity field measurement satellite. As the frequency time standard of the whole system, the USO（ Ultra-stable oscillators）is the key technology for the measurement accuracy. Based on study of the KBR ranging technology, the USO is researched and designed. The short-term frequency stability of the successfully developed USO, have reached 5 × 10^-13/s （Allan deviations）,which can completely met the requirement of this system.
出处
《空间电子技术》
2011年第1期56-64,共9页
Space Electronic Technology
关键词
高精度星间测距系统
KBR
超稳振荡器
USO
稳定度
High accuracy inter-satellite ranging system KBR（ K Band Ranging System） USO（Ultra-sta- ble oscillators） Stability
