News Finding: These scattered lights are symmetric when compared to the location of the sun, which is why ants can use them to get their orientation while navigating.
Paper Finding: AntBot's navigation performances involved a very small number of pixels in comparison with traditional engineering solutions (up to several megapixels in the case of both OF sensors and celestial compasses).
News Context: This helps AntBot get a read of where it is and where it needs to go, just like how early mariners used celestial compasses. These scattered lights are symmetric when compared to the location of the sun, which is why ants can use them to get their orientation while navigating. Aside from using its light sensors, AntBot can also measure the number of steps it has already taken to determine its movement rate relative to where the sun is.
Paper Context: The stride information can also be used to reliably determine the robot's heading (modes PI-OF-ST and PI-ST-FUSE). AntBot's navigation performances involved a very small number of pixels in comparison with traditional engineering solutions (up to several megapixels in the case of both OF sensors and celestial compasses). Because of the robot's walking and turning limitations (maximum walking stride, 8.2 cm; maximum turning stride, 10.9°), this criterion was a fair compromise between AntBot's possibilities and the requirements of the homing task.