Orbit-Only Observability (O)/Unobservability (U) using three three-axis accelerometers and one three-axis accelerometer (Geller & Bhatia, 2018)
| Three 3-axis accelerometers | One 3-axis accelerometer | ||||
|---|---|---|---|---|---|
| Circular | Elliptical | Circular | Elliptical | ||
| Point Mass | Rank | 6 | 6 | 6 | 6 |
| Cond # | 110 | 106 | 357 | 345 | |
| U/O | O | O | O | O | |
| 4×4 Spherical | Rank | 6 | 6 | 6 | 6 |
| Cond # | 110 | 106 | 359 | 347 | |
| U/O | O | O | O | O | |
| 8×8 Spherical | Rank | 6 | 6 | 6 | 6 |
| Cond # | 110 | 106 | 359 | 347 | |
| U/O | O | O | O | O | |