Parameter estimation of a flight vehicle using MMLE/BFGS estimator under limited measurements

Ananthasayanam, MR and Sarkar, AK and Vathsal, S (2002) Parameter estimation of a flight vehicle using MMLE/BFGS estimator under limited measurements. In: AIAA Atmospheric Flight Mechanics Conference and Exhibit 2002, 5 August 2002, United States.

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Abstract

This paper deals with flight data Compatibility Check (CC) and the identification of aerodynamic coefficients of a Flight Vehicle from flight telemetry data. The Method of Maximum Likelihood Estimation technique (MMLE) using Broyden Fletcher Golden Shanno (BFGS) optimization algorithm with line search has been employed for processing the data. Use of BFGS with MMLE has been validated in a simulated environment and it has been concluded that for the present flight vehicle under study only BFGS can minimize the cost function where as conventional Newton Raphson (NR) technique fails to converge when the number of measurements are very few or when the initial input values to the optimizer are somewhat far away from the true values.

Item Type:	Conference Paper
Publication:	AIAA Atmospheric Flight Mechanics Conference and Exhibit
Publisher:	American Institute of Aeronautics and Astronautics Inc.
Additional Information:	The copyrighr of this article belongs to American Institute of Aeronautics and Astronautics Inc.
Keywords:	Cost functions; Data handling; Optimization; Vehicles, Aerodynamic coefficients; Flight vehicles; Line searches; Method of maximum likelihood; Newton raphson (N R); Optimization algorithms; Simulated environment; Telemetry data, Maximum likelihood estimation
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	20 Aug 2020 10:37
Last Modified:	20 Aug 2020 10:37
URI:	http://eprints.iisc.ac.in/id/eprint/66234

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