Article Figures & Data
Figures
- FIGURE 1
(Approx.) Southern L1 Halo orbit CR3BP frame
- FIGURE 2
(Approx.) Southern L1 Halo Orbit ECI Frame
- FIGURE 3
Observation model for both the batch and EKF filters.
- FIGURE 4
Position error - all targets (no measurement noise)
- FIGURE 5
Position error - all targets except Asteroid (no measurement noise)
- FIGURE 6
Velocity magnitude error (no measurement noise)
- FIGURE 7
Velocity direction error (no measurement noise)
- FIGURE 8
Position Error - Tycho Crater - All Measurement Intervals - (with measurement noise)
- FIGURE 9
Position Error - Tycho Crater – 1-, 10-, 30-Minute Measurement Intervals (with measurement noise)
- FIGURE 10
Position uncertainty - Tycho Crater - all measurement intervals - (with measurement noise)
- FIGURE 11
Position uncertainty - Tycho Crater – 1-, 10-, 30-min measurement intervals (with measurement noise)
- FIGURE 12
Velocity magnitude error - Tycho Crater - all measurement intervals (with measurement noise)
- FIGURE 13
Velocity magnitude error - Tycho Crater – 1-, 10-, 30-min measurement intervals (with measurement noise)
- FIGURE 14
Velocity magnitude uncertainty - Tycho Crater - all measurement intervals (with measurement noise)
- FIGURE 15
Velocity magnitude uncertainty - Tycho Crater – 1-, 10-, 30-min measurement intervals (with measurement noise)
- FIGURE 16
Velocity direction error - Tycho Crater - all measurement intervals (with measurement noise)
- FIGURE 17
Velocity direction error - Tycho Crater – 1-, 10-, 30-min measurement intervals (with measurement noise)
- FIGURE 19
Frobenius norm of H vs. time - all targets (no measurement noise)
- FIGURE 20
Frobenius norm of H vs. time - ignoring Moon targets (no measurement noise)
- FIGURE 18
Perilune at Downward Crossings (at zero - green stars) of r dot v
- FIGURE 21
Induced norm of Kalman gain vs. time - Tycho Crater (with measurement noise - all cadences)
- FIGURE 22
Induced norm of Kalman gain vs. time - Tycho Crater (with measurement noise – 1-, 10-, 30-min cadences)
Tables
- TABLE 1
No Measurement Noise (1 min Interval): Inertial Batch Solution Difference to Truth for Lost Spacecraft
State Estimate Soln (diff to truth) GEO Sat LEO Sat Asteroid Moon Center Tycho Crater Δ x (km) 5620 4660 −1.63 ×105 −2.47 × 105 −6.86 ×105 Δ y (km) 350 −440 −8.704 ×104 2.3 −871 Δ z (km) 150 2.2 4.81 × 104 6.64 ×105 1.67 ×105 
65 −12 1315 1.5 3.3 10 −931 −1294 −156 −733 −940 −3.7 −2685 −5 −2.5 CR3BP EKF always converged - TABLE 2
With Measurement Noise 0.1° one Sigma (1-min Interval): Inertial Batch Soln Difference to Truth for Lost Spacecraft
State Estimate Soln (diff to truth) GEO Sat* LEO Sat* Asteroid* Moon Center Tycho Crater Δ x (km) 3.46 × 105 3.44 ×105 3.72 × 105 −3.34 ×104 −3.38 ×104 Δ y (km) −3.43 × 104 −2283 2.59 ×104 −387.1 −637.7 Δ z (km) 5.46 × 104 8.25 × 104 −1.09 ×105 7.86 ×104 7.75 × 104 3119 −2511 −2139 34.2 22.1 86.6 −5451 −25.6 −833.3 −836.1 −326.0 −5314 6041 −1.51 5.29 * CR3BP EKF never converged Diagonal Process Noise Element Nondimensional Process Noise Values Qxx 6.0908×10−22 Qyy 6.0908×10−22 Qzz 6.0908×10−22 Qxx 1.5284×10−14 Qyy 1.5284×10−14 Qzz 1.5284×10−14
Jump to section
Related Articles
Cited By...
- No citing articles found.