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Mars Phoenix EDL Trajectory and Atmosphere Reconstruction Using NewSTEPThis document describes the trajectory and atmosphere reconstruction of the Mars Phoenix Entry, Descent, and Landing using the New Statistical Trajectory Estimation Program. The approach utilizes a Kalman filter to blend inertial measurement unit data with initial conditions and radar altimetry to obtain the inertial trajectory of the entry vehicle. The nominal aerodynamic database is then used in combination with the sensed accelerations to obtain estimates of the atmosphere-relative state. The reconstructed atmosphere pro le is then blended with pre-flight models to construct an estimate of the as-flown atmosphere.
Document ID
20190026499
Acquisition Source
Langley Research Center
Document Type
Technical Memorandum (TM)
Authors
Karlgaard, Christopher D.
(Analytical Mechanics Associates, Inc. Hampton, VA, United States)
Tynis, Jake A.
(Analytical Mechanics Associates, Inc. Hampton, VA, United States)
Date Acquired
June 19, 2019
Publication Date
May 1, 2019
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
NF1676L-33202
L-21028
NASA/TM–2019–220282
Funding Number(s)
WBS: 336763.01.04.15
Distribution Limits
Public
Copyright
Public Use Permitted.
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