This paper proposes multi-sensor localization framework for an autonomous mobile robot using multiple sensor. To realize robust localization in outdoor environments, many external sensors are needed. The propoesd localization framework in the paper is to divide the localization system into modules that contains retro-active localization function for particle filter to solve computation delay of to calculate measurement models. In this paper, solutions for multi-sensor localization are illustrated and localization experimental results in outdoor environments are described.