Vincent Calmettes

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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)
—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)
— 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)
Inertial navigation systems (INS) and global navigation satellite systems (GNSS) are often combined to ensure high accuracy navigation. The last generation of inertial measurement units referred to as micro-electro-mechanical systems (MEMS) might also be used in a lot of applications thanks to their relatively low cost. However, the information given by the(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)