| タイトル | Peak Pc Prediction in Conjunction Analysis: Conjunction Assessment Risk Analysis |
| 本文（外部サイト） | http://hdl.handle.net/2060/20150018309 |
| 著者（英） | Hejduk, M.D.; Vallejo, J.J.; Stamey, J. D. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2015-08-01 |
| 言語 | eng |
| 内容記述 | Satellite conjunction risk typically evaluated through the probability of collision (Pc). Considers both conjunction geometry and uncertainties in both state estimates. Conjunction events initially discovered through Joint Space Operations Center (JSpOC) screenings, usually seven days before Time of Closest Approach (TCA). However, JSpOC continues to track objects and issue conjunction updates. Changes in state estimate and reduced propagation time cause Pc to change as event develops. These changes a combination of potentially predictable development and unpredictable changes in state estimate covariance. Operationally useful datum: the peak Pc. If it can reasonably be inferred that the peak Pc value has passed, then risk assessment can be conducted against this peak value. If this value is below remediation level, then event intensity can be relaxed. Can the peak Pc location be reasonably predicted? |
| NASA分類 | Space Communications, Spacecraft Communications, Command and Tracking |
| レポートNO | GSFC-E-DAA-TN24540 |
| 権利 | Copyright, Distribution under U.S. Government purpose rights |
