Analysis of the Effect of ODTS System Noise on the Performance Estimation of On-board Clock

• 作 者: Dawei Sun Xaolin Jia Na Cheng
• 机 构: Chang'an University, Xi'an, Shanxi, China Xi'a
• 出 处: 第七届中国卫星导航学术年会
• 发表日期: 2016年5期
• 关键词: System noise Clock products Orbit determination and time synchronization

　　Depending on the orbit determination and time synchronization (ODTS) process,we consider at least 2 receivers driven by active Hydrogen Maser on the ground,then we analyze the effect of ODTS system noise on the performance estimation of on-board clock based on the difference between the clock offset of these 2 receivers.The IGS and GBM clock products are calculated in the method of ODTS,therefore the products contain the ODTS system noise.We could determine the system noise of ODTS quantitatively based on the method above,and the results show that system noise of IGS and GBM clock products is acceptable in the mid-term and long-term,and the IGS and GBM clock products could be used to estimate the mid-term and long-term performance of on-board clock.