Collaborative localization method of multi-mobile micro-robot based on relative positioning is researched

in order to improve localization precision of micro-robot. Self-positioning of micro robot is realized by particle filtering method

and low power consumption infrared sensor is used in positioning system as ranging sensor of micro-robot according to characteristic of small size of micro-robot. Collaborative localization method is proposed based on relative positioning and self-positioning

which remains some particles in its own particle set

rather than strategy of exchanging all the particles

ensure certain positioning precision. The effectiveness of this collaborative localization algorithm is verified by simulation and experiment results.