| 摘要: |
| 为了适应多目标任务的测定轨需求，进一步提高测量船定轨的时效性，对时间序列
最优定轨方法进行了研究，分析了定轨工作中涉及的飞行动力学模型，对序贯定轨的过程进
行了贝叶斯统计描述。基于工程应用的可行性，采用扩展卡尔曼滤波方法和无迹滤波方法，
并对两者进行了改进，在计算上采用平方根扩展卡尔曼滤波方法和平方根无迹滤波方法，在
定轨模式上，采用一种新的混合定轨方法。改进后的方法在保持精度的基础上提高了滤波
器时间更新效率，模拟数值计算和实战数据验证的结果表明，两种滤波定轨方法均能够在较
短的时间内收敛，并达到预期的定轨精度。 |
| 关键词: 测量船 最优轨道确定 平方根扩展卡尔曼滤波 平方根无迹滤
波 |
| DOI： |
|
| 基金项目:国家高技术研究发展计划(863计划)项目 |
|
| Improvement of optimal sequential orbit determination method for TT&C ship |
| MU Jun-shan,LIU Bing,XUE Guo-hu,DAI Zheng-xu |
| () |
| Abstract: |
| To satisfy the requirement of multitarget launch mission and improve
the time performance of orbit determination of spacecraft for TT&C ship, new seq
uential optimal estimation methods are proposed and studied.
The dynamic process model in spacecraft orbit determination is analyzed, and a B
ayesia
n description for the Markov process is described. For the engineering applicati
on of theoret
ical models,improved methods SREKF and SRULF based on tw
o typical nonlinear filters are proposed. Furthermore, a new hybrid orbit
determination model is adopted which utilizes both high precision numerical prop
agator and
high speed analytical propagator. The simulation and historical measurement dat
a verification shows that both filters have achieved the expected accuracy, spee
d and convergence. |
| Key words: TT&C ship real time orbit determination square root extended Kalman filter squa
re root unscented Kalman filter |
