| タイトル | Parameter dimension of turbulence-induced phase errors and its effects on estimation in phase diversity |
| 本文（外部サイト） | http://hdl.handle.net/2060/19960016568 |
| 著者（英） | Thelen, Brian J.; Paxman, Richard G. |
| 著者所属（英） | Environmental Research Inst. of Michigan |
| 発行日 | 1994-01-01 |
| 言語 | eng |
| 内容記述 | The method of phase diversity has been used in the context of incoherent imaging to estimate jointly an object that is being imaged and phase aberrations induced by atmospheric turbulence. The method requires a parametric model for the phase-aberration function. Typically, the parameters are coefficients to a finite set of basis functions. Care must be taken in selecting a parameterization that properly balances accuracy in the representation of the phase-aberration function with stability in the estimates. It is well known that over parameterization can result in unstable estimates. Thus a certain amount of model mismatch is often desirable. We derive expressions that quantify the bias and variance in object and aberration estimates as a function of parameter dimension. |
| NASA分類 | Optics |
| レポートNO | 96N22212
NASA-CR-200299
NAS 1.26:200299 |
| 権利 | No Copyright |
