Research Article
Inertia Parameter Identification for an Unknown Satellite in Precapture Scenario
Table 5
Inertia parameters of the unknown targets.
| No. | | (kg) | (m) | (m) | (m) | (kg·m2) | (kg·m2) | (kg·m2) | (kg·m2) | (kg·m2) | (kg·m2) |
| 1 | Real value | 500 | -0.4 | 0.5 | 0.5 | 325 | 125 | 125 | 325 | -125 | 325 | Estimation | 500.052 | -0.39995 | 0.50009 | 0.50008 | 324.9415 | 125.0188 | 124.9900 | 324.9568 | -125.02 | 325.0585 | Error rate | 0.0104% | 0.0125% | 0.018% | 0.0161% | 0.0182% | 0.0153% | 0.0082% | 0.0133% | 0.0167% | 0.0182% |
| 2 | Real value | 1000 | -0.5 | 0.5 | 0.5 | 650 | 250 | 250 | 650 | -250 | 650 | Estimation | 999.863 | 0.50006 | 0.50007 | 0.49992 | 650.0533 | 250.0343 | 249.9570 | 649.9018 | 250.2300 | 649.9324 | Error rate | 0.0137% | 0.0128% | 0.0143% | 0.0154% | 0.0082% | 0.0137% | 0.0172% | 0.0151% | 0.0092% | 0.0104% |
| 3 | Real value | 5000 | -0.5 | 0.5 | 0.6 | 3250 | 1250 | 1250 | 3250 | -1250 | 3250 | Estimation | 5000.412 | 0.49993 | 0.49992 | 0.60007 | 3250.4842 | 1250.1187 | 1249.8537 | 3249.5905 | 1249.8075 | 3250.5427 | Error rate | 0.00824% | 0.0124% | 0.0158% | 0.0132% | 0.0149% | 0.0095% | 0.0117% | 0.0126% | 0.0154% | 0.0167% |
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