Real-Time Gravity Filtering from On-Board Gradiometers

Superconducting Gravity Gradiometers (SGGs)

Three models of SGGs with increasing complexity and sensitivity have been developed at Maryland [Chan et al., 1987; Moody et al., 2002]. The Model II SGG has reached an operating sensitivity of 0.02 E Hz (1 E ≡ 1 Eötvös ≡ 10 s), three orders of magnitude improvement over the sensitivity achieved by room-temperature gradiometers. With such vastly improved sensitivity, the SGG finds useful applic...

Real-time Java for On-board Systems

The Java language has several attractive features but cannot at present be used in on-board systems primarily because it lacks support for hard real-time operation. This shortcoming is in being addressed: some suppliers are already providing implementations of Java that are RTcompliant; Sun Microsystem has approved a formal specification for a real-time extension of the language; and an indepen...

Real-time on-board condition monitoring of train axle bearings

Premature failure of rail axle bearings causes a significant increase in train operating costs and can impact train safety. A new on-board condition monitoring approach provided by Perpetuum Ltd is fitted on passenger trains to provide the operator with real-time information on bearing health. This new technology allows the detection of early bearing damage. This paper reports an initial study ...

The Chopping Board: Real-time Sample Editor

Classification board for real time image segmentation

We present in this paper the realization of a classification board, for real-time image segmentation. The classification of each pixel is completed using a real time extraction of attributs and a geometric classification method by stress polytope training, which ensures a high decision speed (100 ns per pixels) and good performances. The decision operator has been integrated in the form of a fu...