中文摘要：

文章探讨了CEI技术在飞船交会对接远程导引段的实时监控的能力，采用单一绝对滤波器的方案进行实时轨道计算，仿真结果表明：采用滤波稳定后固定模糊度的方法可以提高轨道的滤波解精度，相对轨道位置精度可达十米级，速度精度可达厘米每秒级，满足远程导引段的精度指标。

英文摘要：

Connected the characteristic of short element interferometry （CEI） is a passive angular tracking method with baselines, flexible network distribution and nearly real-time processing.It can make real time and precise orbit determination for spacecraft rendezvous and docking. CEI based real-time orbit determination in the course of long distance navigation of spacecraft rendezvous and docking was discussed, and the method of absolute filter was adopted. The simulation results indicat that the method of fixing integer ambiguity after the filter is stable, anc can improve the orbit precision. The relative position precision can reach the magnitude of 10m and the relative velocity precision reaches the magnitude of lcm per second.