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UID:6598@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20201216T140000
DTEND;TZID=Europe/Paris:20201216T150000
DTSTAMP:20241120T201750Z
URL:https://www.i2m.univ-amu.fr/evenements/navigation-possibilities-withou
 t-gps-or-5g-the-antbot-solution-julien-serres/
SUMMARY:Julien Serres (ISM (Institut des Sciences du Mouvement)\, Aix-Marse
 ille Université): Navigation possibilities without GPS or 5G: the AntBot 
 solution - Julien Serres
DESCRIPTION:Julien Serres: Autonomous navigation has become one of the majo
 r technological challenges of the 21st century because the need for roboti
 c mobility is huge. Several outdoor location systems are now available: ci
 vil GNSS (Global Navigation Satellite System) with an accuracy of 5 m to 3
 0 m depending on the weather and the environment\, or GSM (Global System f
 or Mobile communications) which self-localises using terrestrial networks 
 by merging GSM and GNSS information. This can achieve an accuracy of 5 to 
 10 cm under optimal signal reception conditions. These technological solut
 ions will work\, but they also require significant energy due to radio emi
 ssions. Moreover\, in the event of a blackout or service interruption\, ho
 w will we guarantee the continuity of the localisation service? The soluti
 on lies in nature as many animals navigate with ease and precision without
  using such conventional systems. Bio-inspired solutions would allow navig
 ation in the event of major faults in the GNSS and GSM networks. Directly 
 inspired by the desert ant Cataglyphis fortis\, the hexapod robot AntBot s
 elf-localises by counting its strides\, measures its distance travelled fr
 om the integration of the visual scrolling of the ground and estimates its
  course using a celestial compass. AntBot repositions itself with an error
  of just 7 cm\, almost 100 times lower than civil GNSS. AntBot’s celesti
 al compass detects ultraviolet radiation scattered by the atmosphere. This
  compass is inspired by the dorsal part of the compound eyes of insects\, 
 and it only requires two photodiodes surmounted by linear rotary polarisin
 g filters that scan the sky dome. It thus measures the angle of polarisati
 on of the light from the sky to provide the robot with a heading (accuracy
 : ~0.4°). The heading detection model is directly inspired by the polaris
 ation vision used by insects. Although this biological model appears simpl
 e it is very interesting\, due to its sensory parsimony\, for developing b
 io-inspired instruments capable of providing directional information. The 
 performance of this new bio-inspired navigation instrument attest to the i
 nnovative\, reliable and robust nature of this optical compass for obtaini
 ng course information\, and it is already the subject of research with ind
 ustrial partners.\nIOSSB Seminar
ATTACH;FMTTYPE=image/jpeg:https://www.i2m.univ-amu.fr/wp-content/uploads/2
 020/07/Julien_Serres.jpg
CATEGORIES:Interdisciplinary online seminar series on
 Biolocomotion,Virtual event
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