Algorithm development for online control of the ABL

Michael W. Oppenheimer; Meir Pachter

doi:10.1117/12.356975

3 August 1999 Algorithm development for online control of the ABL

Michael W. Oppenheimer, Meir Pachter

Proceedings Volume 3706, Airborne Laser Advanced Technology II; (1999) https://doi.org/10.1117/12.356975
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

In optics, Zernike orthogonal polynomials are used as a basis set for the expansion of wavefront phases. Due to the atmospheric turbulence-induced stochastic nature of the underlying process involved, the spatial-temporal correlation functions of the Zernike polynomial phase expansion coefficients must be evaluated if adaptive optics is to be employed. In this paper, these correlation functions are developed using a layered atmospheric model and calculations for the first few low-order Zernike modes are performed. Using these correlation functions, an underlying linear dynamical system is identified. Within an acceptable error bound, the correlation functions of this system are representative of the calculated correlation functions. This syste, in turn, provides the basis for the employment of advanced control and estimation concepts in an adaptive optics system that is being developed for the ABL.

Citation Download Citation

Michael W. Oppenheimer and Meir Pachter "Algorithm development for online control of the ABL", Proc. SPIE 3706, Airborne Laser Advanced Technology II, (3 August 1999); https://doi.org/10.1117/12.356975

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available