Dealing with the right of way in advanced traffic simulation. A characterization of drivers’ behaviours in a multi-agent approach

With the emergence of ADAS and autonomous vehicle, the need of simulation software to test advanced systems and models is unavoidable. The objective of this work is to characterize, in a multi-agent approach, the traffic vehicles behaviours, and to model them in a versatile traffic simulator, serving as a testing tool for integration in the traffic module of the SCANeR StudioTM simulation software. The algorithm will bring more natural interactions between vehicles in simulation and allow the emergence of new relevant situations for autonomous vehicles, observable in real, such as collision risk situations or even accidents, which have for now to be scripted in scenarios and do not occur naturally

A new meteor detection algorithm for shuttered photography

International audienceThis paper presents a new meteor detection algorithm used on CCD camera images. We detail some methods used on CCD images but also on other types of images. Then we explain the algorithm which applies image difference and then the Hough transform

A new meteor detection algorithm for shuttered photography

International audienceThis paper presents a new meteor detection algorithm used on CCD camera images. We detail some methods used on CCD images but also on other types of images. Then we explain the algorithm which applies image difference and then the Hough transform

The ''CAmera for BEtter Resolution'' (CABERNET): First scientific results

International audienceThe "CAmera for BEtter Resolution" (CABERNET) is a network of 3 stations with cameras dedicated to accurate measurement of meteor trajectories in the Earth's atmosphere. This network is located in Southern France (Pic du Midi observatory, Guzet resort) and Spain (Montsec Planetarium) since 2013. We present here the first scientific results. In particular, the determination of the velocity is a crucial point to derive the heliocentric orbit of the meteoroid. Our method based on the measurement of space frequencies is presented. Though the development of the pipeline will last for another few months in order to fully optimize it, we discuss the point of amelioration and compare our results with those from other setups

The ''CAmera for BEtter Resolution'' (CABERNET): First scientific results

International audienceThe "CAmera for BEtter Resolution" (CABERNET) is a network of 3 stations with cameras dedicated to accurate measurement of meteor trajectories in the Earth's atmosphere. This network is located in Southern France (Pic du Midi observatory, Guzet resort) and Spain (Montsec Planetarium) since 2013. We present here the first scientific results. In particular, the determination of the velocity is a crucial point to derive the heliocentric orbit of the meteoroid. Our method based on the measurement of space frequencies is presented. Though the development of the pipeline will last for another few months in order to fully optimize it, we discuss the point of amelioration and compare our results with those from other setups

Update on recent-past and near-future meteor shower outbursts on Earth and on Mars

International audienceThis work presents a brief reflection on the 2014 Camelopardalids and the Mars encounter with comet C/2013 A1 Siding Spring expected in October 2014. These two events were first thought to display an exceptional amount of meteors and later works showed that it would not be the case, at least in optical wavelength. Observation biases and low activity of the comet can explain those differences, but care must be taken when announcing any future meteor shower and close co-operation with other scientists is needed to strengthen the case

The ''CAmera for BEtter Resolution'' (CABERNET): First scientific results

International audienceThe "CAmera for BEtter Resolution" (CABERNET) is a network of 3 stations with cameras dedicated to accurate measurement of meteor trajectories in the Earth's atmosphere. This network is located in Southern France (Pic du Midi observatory, Guzet resort) and Spain (Montsec Planetarium) since 2013. We present here the first scientific results. In particular, the determination of the velocity is a crucial point to derive the heliocentric orbit of the meteoroid. Our method based on the measurement of space frequencies is presented. Though the development of the pipeline will last for another few months in order to fully optimize it, we discuss the point of amelioration and compare our results with those from other setups

Update on recent-past and near-future meteor shower outbursts on the Earth and on Mars

International audienceA meteor shower outburst has been predicted on Earth on May 29th 2014 by several authors (Lyytinen and Jenniskens 2006, Ye and Wiegert 2014, Vaubaillon 2014), caused by comet 209P/LINEAR (2004 CB). At the time we are writing this abstract, we are still two months ahead of the event. If observed, the shower will radiate from a point in Camelopardalids. The event is predicted to be observable during the night in North America. The influence of planetary resonances are examined for this particular outburst

Update on recent-past and near-future meteor shower outbursts on Earth and on Mars

International audienceThis work presents a brief reflection on the 2014 Camelopardalids and the Mars encounter with comet C/2013 A1 Siding Spring expected in October 2014. These two events were first thought to display an exceptional amount of meteors and later works showed that it would not be the case, at least in optical wavelength. Observation biases and low activity of the comet can explain those differences, but care must be taken when announcing any future meteor shower and close co-operation with other scientists is needed to strengthen the case

Update on recent-past and near-future meteor shower outbursts on the Earth and on Mars

International audienceA meteor shower outburst has been predicted on Earth on May 29th 2014 by several authors (Lyytinen and Jenniskens 2006, Ye and Wiegert 2014, Vaubaillon 2014), caused by comet 209P/LINEAR (2004 CB). At the time we are writing this abstract, we are still two months ahead of the event. If observed, the shower will radiate from a point in Camelopardalids. The event is predicted to be observable during the night in North America. The influence of planetary resonances are examined for this particular outburst