Comparison of Statistical Estimation Techniques for Mars Entry, Descent, and Landing Reconstruction
Abstract
Flight data from an entry, descent, and landing sequence can be used to reconstruct the vehicle's trajectory, aerodynamic coefficients, and the atmospheric profile experienced by the vehicle. Past Mars missions have not contained instrumentation that would allow for the separation of uncertainties in the atmosphere and the aerodynamic database. The 2012 Mars Science Laboratory took measurements of the pressure distribution on the aeroshell forebody during entry and allows freestream atmospheric conditions to be partially observable. Methods to estimate the flight performance statistically using onboard measurements are demonstrated here through the use of simulated Mars data. A range of statistical estimators, specifically the extended Kalman filter and unscented Kalman filter, are used to demonstrate which estimator best quantifies the states and the uncertainties in the flight parameters. The techniques demonstrated herein are planned for application to the Mars Science Laboratory flight dataset.
Additional Information
© 2012 by Soumyo Dutta. The Space Systems Design Laboratory at the Georgia Institute of Technology developed the tools used to generate the results in this paper. NASA Research Announcement awards (nos. NNX08AI18A and NNX12AF94A) have supported the tool development effort. The Space Systems Design Laboratory at the Georgia Institute of Technology developed the tools used to generate the results in this paper. The authors would also like to thank Chris Karlgaard of Analytical Mechanics Associates and Mark Schoenenberger of NASA Langley Research Center for their advice regarding the simulation of the Mars Science Laboratory entry, descent, and landing (EDL) instrumentation type of data and the estimation of EDL parameters from this data.Attached Files
Published - 1.a32459.pdf
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Additional details
- Eprint ID
- 119938
- Resolver ID
- CaltechAUTHORS:20230310-764772000.28
- NNX08AI18A
- NASA
- NNX12AF94A
- NASA
- Created
-
2023-03-15Created from EPrint's datestamp field
- Updated
-
2023-03-15Created from EPrint's last_modified field
- Other Numbering System Name
- AIAA Paper
- Other Numbering System Identifier
- 2012-0400