Multi-beam laser coordinate measuring system

A method of determining pose information of a rigid object, the method comprising:

• directing, by three or more sets of multiple laser trackers, a plurality of laser beams to three or more retroreflectors secured to the rigid object that is movable within a frame of reference, wherein multiple laser trackers in each set of multiple laser trackers direct laser beams to a respective retroreflector associated with the set to monitor a location of the respective retroreflector;
• in response to directing the plurality of laser beams, receiving, by the three or more sets of multiple laser trackers and from the retroreflectors, a plurality of reflected laser beams;
• determining a distance between each laser tracker and a corresponding one of the retroreflectors based on the received reflected laser beams;
• obtaining, by an electronic controller that is in communication with the laser trackers, information regarding a respective location of each of the laser trackers in the frame of reference;
• and
• determining, by the electronic controller, the pose information of the rigid object in the frame of reference, wherein the pose information is determined based on the information regarding the respective location of each laser tracker and information about the location of each retroreflector from each laser tracker of the set of laser trackers associated with the retroreflector.