Micro assembly is typically characterised by positioning tolerances below a few micrometers. In the case of a hybrid micro system assembly, such as optical glass fibres, micro ball lenses or micro probes for measurement tasks, even positioning accuracies in the sub-micrometer range have to be achieved. Due to the need for highly accurate assembly systems and extensive alignment procedures the a...

High accuracy positioning stages with multiple degrees-of-freedom, or microsteppers, are ubiquitous in industrial manufacturing. These devices are used in probing and inspection systems, in the assembly of disk drive heads, and in semiconductor manufacturing. In semiconductor manufacturing, microsteppers are employed to accurately move silicon wafers in the photolithography process. To guarante...

The objective of the research described in this paper is to develop a Kalman filter-based functional model for single-frequency positioning which is suitable for low dynamic platforms such as cars or boats. No external sensors are used and the precise velocity information comes from the time-differenced carrier-phase measurements. The Kalman filter combines these measurements with undifferenced...

Remote sensing radar satellites cover wide areas and provide spatially dense measurements, with millions of scatterers. Knowledge of the precise position of each radar scatterer is essential to identify the corresponding object and interpret the estimated deformation. The absolute position accuracy of synthetic aperture radar (SAR) scatterers in a 2D radar coordinate system, after compensating ...