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Orbit determination and prediction study for dynamic explorer 2
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Nakai, Y. Smith, R. L. Doll, C. E. |
| Copyright Year | 1983 |
| Description | Definitive orbit determination accuracy and orbit prediction accuracy for the Dynamic Explorer-2 (DE-2) are studied using the trajectory determination system for the period within six weeks of spacecraft reentry. Baseline accuracies using standard orbit determination models and methods are established. A promising general technique for improving the orbit determination accuracy of high drag orbits, estimation of random drag variations at perigee passages, is investigated. This technique improved the fit to the tracking data by a factor of five and improved the solution overlap consistency by a factor of two during a period in which the spacecraft perigee altitude was below 200 kilometers. The results of the DE-2 orbit predictions showed that improvement in short term prediction accuracy reduces to the problem of predicting future drag scale factors: the smoothness of the solar 10.7 centimeter flux density suggests that this may be feasible. |
| File Size | 1701210 |
| Page Count | 54 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840003124 |
| Archival Resource Key | ark:/13960/t8bg7hm96 |
| Language | English |
| Publisher Date | 1983-10-01 |
| Access Restriction | Open |
| Subject Keyword | Astrodynamics Aerodynamic Drag Error Analysis Gravitational Effects Orbit Decay Mathematical Models Orbital Position Estimation Atmospheric Density Prediction Analysis Techniques Spacecraft Tracking Dynamics Explorer 2 Satellite Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
