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Laleh Makarem

Publications associées (15)

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Priority coordination of fiber positioners in multi-objects spectrographs

Denis Gillet, Jean-Paul Richard Kneib, Mohamed Bouri, Laleh Makarem

Projects such as "The Dark Energy Spectroscopic Instrument" (DESI) [1] or "The Multi Object Optical and Near-infrared Spectrograph" (MOONS) [5] are developing spectrographs, composed of more than thousand of optical fibers in a confined hexagonal focal pla ...

SPIE-INT SOC OPTICAL ENGINEERING2018

A Virtual Vehicle Based Coordination Framework For Autonomous Vehicles in Heterogeneous Scenarios

Denis Gillet, Laleh Makarem

This work presents a novel virtual vehicle based decentralized coordination framework for Connected Autonomous Vehicles (CAVs). We explore the idea of CAVs being capable of positioning virtual vehicles to share their intended maneuver as well as request co ...

2017

Collision-Free Coordination of Fiber Positioners in Multi-object Spectrographs

Denis Gillet, Jean-Paul Richard Kneib, Laleh Makarem

Many ber-fed spectroscopic survey projects, such as DESI, PFS and MOONS, will use thousands of fiber positioners packed at a focal plane. To maximize observation time, the positioners need to move simultaneously and reach their targets swiftly. We have pre ...

Spie-Int Soc Optical Engineering2016

Target-based fiber assignment for large survey spectrographs

Jean-Paul Richard Kneib, Laleh Makarem

Next generation massive spectroscopic survey projects have to process a massive amount of targets. The preparation of subsequent observations should be feasible in a reasonable amount of time. We present a fast algorithm for target assignment that scales a ...

Spie-Int Soc Optical Engineering2016

The coordination of multi-robot systems is becoming one of the most important areas of research in robotics, mostly because it is required by numerous complex applications. These applications range from intelligent transportation systems, search and rescue ...

EPFL2015

An 8-mm diameter fibre robot positioner for massive spectroscopy surveys

Denis Gillet, Hannes Bleuler, Jean-Paul Richard Kneib, Mohamed Bouri, Laleh Makarem, Laurent Frédéric Jenni

Massive spectroscopic survey are becoming trendy in astrophysics and cosmology, as they can address new fundamental knowledge such as understanding the formation of the Milky Way and probing the nature of the mysterious dark energy. To enable massive spect ...

Oxford University Press2015

Collision avoidance in next-generation fiber positioner robotic systems for large survey spectrographs

Denis Gillet, Hannes Bleuler, Jean-Paul Richard Kneib, Mohamed Bouri, Laleh Makarem, Laurent Frédéric Jenni

Some of the next generation massive spectroscopic survey projects, plan to use thousands of fiber positioner robots packed at a focal plane to quickly move in parallel the fiber-ends from the previous to the next target points. The most direct trajectories ...

2014

In this paper we introduce a new decentralized navigation function for coordination of autonomous vehicles at intersections. The main contribution is a navigation function designed for vehicles with predefined paths that uses expected time to intersection ...

2012

In this paper we compare the performance of autonomous vehicles at intersections with respect to the type of information shared. For this purpose we consider the cases where vehicles share or not information about their inertia and their intention at the i ...

2012

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One of the challenging problems with autonomous vehicles is their performance at intersections. This paper shows an alternative control method for the coordination of autonomous vehicles at intersections. The proposed approach is grounded in multi-robot co ...

2012