Vincent Calmettes

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—Multipath propagation causes major impairments to global positioning system (GPS) based navigation. Multipath results in biased GPS measurements, hence inaccurate position estimates. In this paper, multipath effects are considered as abrupt changes affecting the navigation system. A multiple model formulation is proposed whereby the changes are represented(More)
The localization performance of a navigation system can be improved by coupling different types of sensors. This paper fo-cuses on INS-GPS integration. INS and GPS measurements allow to define a non-linear state space model, which is appropriate to particle filtering. This model being conditionally linear Gaus-sian, a Rao-Blackwellization procedure can be(More)
Satellite payloads are becoming much more complex with the evolution towards multimedia applications. Moreover satellite lifetime increases while standard and services evolve faster, necessitating a hardware platform that can evolves for not developing new systems on each change. The same problem occurs in terrestrial systems like mobile networks and a(More)
The designed rejection filter is of recursive prediction error (RPE) form and uses a special constrained model of infinite impulse response (IIR) with a minimal number of parameters. The so-called PIRANHA Filter is made up independent cascaded adaptive cells realising high rejection at certain frequencies. The convergent filter is characterised by highly(More)
— This paper describes a full 6D localization algorithm based on probabilistic motion field. The motion field is obtained by an adaptation of the video compression algorithm known as Block-Matching which provides a sparse optical flow. Such a technique is very fast and allows real time applications. Image is decomposed in a grid of rectangular blocks. For(More)