Local Nonlinear Filter for Long-distance Relative State Estimation of Non-cooperative Spacecraft

Table 1. Tab.1Initial orbit elements of the tracing satellite
View table
View in Article
Table 1. Tab.1Initial orbit elements of the tracing satellite
半长轴/m 偏心率轨道倾角/( $^{\circ}$ ) 升交点赤经/( $^{\circ}$ ) 近地点幅角/( $^{\circ}$ ) 真近点角/( $^{\circ}$ )
6 986 387.33 0.01×10^-5 97.80 355.22 102.31 64.50

Table 2. Tab.2Performance comparison of the discrete models

View table

View in Article

Table 2. Tab.2Performance comparison of the discrete models

相对距离/km	终点误差	模型1	模型2	模型3	模型4
20	相对位置/m	0.000 5	1.949 3	4.571 9	0.041 6
20	相对速度/(m•s^-1)	0.000 4×10^-2	0.019 2	0.002 7	0.000 6
45	相对位置/m	0.001 1	9.861 8	10.284 0	0.093 1
45	相对速度/(m•s^-1)	0.000 9×10^-2	0.097 1	0.006 1	0.001 4
70	相对位置/m	0.001 7	23.849 0	15.992 8	0.144 0
70	相对速度/(m•s^-1)	0.001 5×10^-2	0.234 9	0.009 4	0.002 2

Table 3. Tab.3Initial parameter setting
View table
View in Article
Table 3. Tab.3Initial parameter setting
参数名称参数值
初始相对位置/m $x_{1,0} = [\begin{matrix} - 100 006.714 8 \\ - 3.456 1 \times 10^{- 10} \\ - 715.801 2 \end{matrix}]$
初始相对速度/(m•s^-1) $x_{2,0} = [\begin{matrix} 9.763 0 \times 10^{- 6} \\ 2.176 0 \times 10^{- 14} \\ 4.784 7 \times 10^{- 6} \end{matrix}]$

Table 4. Tab.4Performance comparison of different filters
View table
View in Article
Table 4. Tab.4Performance comparison of different filters
性能指标 EKF CKF LNKF
合成误差相对位置/m 14.652 2 5.346 3 5.608 0
相对速度/(m·s^-1) 0.241 6 0.007 8 0.008 2
运算时间 t_m/ms 0.038 0 0.201 0 0.089 0

Tools

Get Citation

Copy Citation Text

Qing LI, Shiyuan ZHANG, Shan LU, Yongjiang XIA, Licheng LIU. Local Nonlinear Filter for Long-distance Relative State Estimation of Non-cooperative Spacecraft[J]. AEROSPACE SHANGHAI, 2024, 41(6): 31

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites