A method is provided for extracting the position of a particle, e.g., a moving or stationary particle that is excited or is emitting light. The method includes, among other steps, detecting and recording a signal based on, for example, the movement of the particle, a correlation step to eliminate noise...http://www.google.de/patents/US20080183418?utm_source=gb-gplus-sharePatent US20080183418 - Method and system for evaluation of signals received from spatially modulated excitation and emission to accurately determine particle positions and distances