Two-dimensional patterns for optical alignment.
Two-dimensional patterns that have properties suited for optical alignment have been constructed from one-dimensional binary Barker codes. Applications include automated alignment of masks with patterns in photolithography.
Heuristic Analytical Solution of the Time Dependent Radiative Transfer Equation for a Semi-infinite Medium
The Green's function of the time dependent radiative transfer equation for the semi-infinite medium is derived by an heuristic approach based on the extrapolated boundary condition and an almost exact solution for the infinite medium.
Zweidimensionale Folgen mit perfekten periodischen Korrelationsfunktionen
Two-dimensional arrays with impulse-like periodic autocorrelation functions are useful in twodimensional signal processing or in antenna theory. First, properties and methods for synthesizing arrays with perfect periodic autocorrelation and good energy efficiency are discussed. Then construction methods for sets of arrays with vanishing crosscorrelation are presented. The synthesis is based on a multiplication theorem for periodic arrays and their correlation functions. Für die Dokumentation: Zweidimensionales Signal / zweidimensionale Korrelationsfunktion / codierte Aperturfunktion / perfekte Folgen