Patent ID: 8718935

Claim:
An initialization system for a personal navigation system associated with a user, comprising: at least one portable structure comprising: (1) an arbitrary first reference point arrangement configured for communication with the personal navigation system of the user and to facilitate the generation of a first user data set including horizontal position and azimuth angle (x 1 , y 1 , θ 1 ); and (2) an arbitrary second reference point arrangement configured for communication with the personal navigation system of the user and to facilitate the generation of a second user data set including horizontal position and azimuth angle (x 2 , y 2 , θ 2 ); and at least one control device configured to determine a common coordinate system based at least in part upon the first user data set and the second user data set, wherein the at least one portable structure is configured for placement on the ground and has an upper surface configured for contact with the user.